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19-2942; Rev 1; 11/06
KIT ATION EVALU ILABLE AVA
0.5, Quad SPDT Switches in UCSP/QFN
General Description
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A low on-resistance, analog switches operate from a single +1.8V to +5.5V supply. The MAX4754/MAX4754A and MAX4755 are dual, double-pole, double-throw (DPDT) switches. The MAX4756/MAX4756A are quad, single-pole double-throw (SPDT) switches. They are configured to route either audio or data signals. The MAX4754/MAX4754A have four 0.5 SPDT switches for audio-signal routing and two logic control inputs. The MAX4755 has four 0.5 SPDT switches (with two switches that have an additional 11 series resistor at the NC terminals). This allows users to drive an 8 speaker as a 32 load (ear speaker). The MAX4756/ MAX4756A have four 0.5 SPDT switches controlled by one logic control input and an enable input (EN) to disable the switches. The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A are available in a space-saving 16-pin TQFN and a tiny 16-bump, 2mm x 2mm chip-scale package (UCSPTM).
Features
Data and Audio-Signal Routing Low RON (0.5 typ) Audio Switches 0.1 (typ) Channel-to-Channel Matching 0.2 (typ) On-Resistance Flatness 0.035% (typ) THD Improved Power-Supply Current for NonRail-to-Rail Control Logic Inputs (MAX4754A/MAX4756A) +1.8V to +5.5V Supply Range Rail-to-Rail Signal Handling 16-Bump UCSP (2mm x 2mm)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Ordering Information
PART MAX4754EBE+T MAX4754ETE+T MAX4754AEBE+T MAX4754AETE+T MAX4755EBE+T* MAX4755ETE+T* MAX4756EBE+T* MAX4756ETE+T* MAX4756AEBE+T* MAX4756AETE+T* PIN-PACKAGE 16 UCSP-16 16 TQFN-EP** 16 UCSP-16 16 TQFN-EP** 16 UCSP-16 16 TQFN-EP** 16 UCSP-16 16 TQFN-EP** 16 UCSP-16 16 TQFN-EP** PKG CODE B16-1 T1644-4 B16-1 T1644-4 B16-1 T1644-4 B16-1 T1644-4 B16-1 T1644-4
Applications
Speaker-Headset Switching Audio-Signal Routing Cellular Phones PDAs/Handheld Devices Notebook Computers
UCSP is a trademark of Maxim Integrated Products, Inc. Pin Configurations appear at end of data sheet.
Note: These devices operate over the -40C to +85C operating temperature range. *Future product--contact factory for availability. **EP = Exposed paddle. +Denotes lead-free package.
Functional Diagrams
INA NO1 COM1 COM2 INA NO1 11 NC1 NO2 11 NC2 NO3 COM3 COM4 NC2 NO3 COM3 COM4 NC2 NO3 COM3 COM4 COM1 COM2 INA NO1 COM1 COM2
NC1 NO2
NC1 NO2
NC3 NO4
NC3 NO4
NC3 NO4
NC4 INB
NC4 INB
NC4 EN
MAX4754/ MAX4754A
MAX4755
MAX4756/ MAX4756A
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.) V+, IN_, EN...............................................................-0.3V to +6V COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current NC1, NC2, COM1, COM2 (MAX4755)........................100mA NO_, NC_, COM_ (remaining terminal connections) ....300mA Peak Current NC1, NC2, COM1, COM2 (MAX4755) (Pulsed at 1ms, 10% duty cycle)................................200mA (Pulsed at 1ms, 50% duty cycle)................................150mA Peak Current NO_, NC_, COM__ (remaining terminal connections) (Pulsed at 1ms, 10% duty cycle)............................500mA (Pulsed at 1ms, 50% duty cycle)............................400mA Continuous Power Dissipation (TA = +70C) 16-Bump UCSP (derate 8.2mW/C above +70C) ......660mW 16-Pin TQFN (derate 16.9mW/C above +70C)............................................................1349mW ESD per Method 3015.7...................................................2kV Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Bump Temperature (soldering) Infrared (15s) ...............................................................+220C Vapor Phase (60s) .......................................................+215C Lead Temperature (soldering, 10s) .................................+300C
Note 1: Signals on NO_, NC_, COM_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at +3V and TA = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM_, VNO_, VNC_ V+ = 2.7V, ICOM_= 10mA, VNC_ or VNO_ = 0V or V+ (Note 4) MAX4755 (NO1, NO2, N_3, N_4), MAX4754/ MAX4754A/MAX4756/ MAX4756A MAX4755 (NC1, NC2) TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C MAX4755 (NC1, NC2) TMIN to TMAX +25C MAX4754A/MAX4756A TMIN to TMAX MAX4755 (NO1, NO2, N_3, N_4, NO1, NO2), MAX4754/ MAX4754A/MAX4756/ MAX4756A +25C TMIN to TMAX 0.2 0.55 0.4 0.1 0.2 8.0 0.1 11.5 12.5 0.35 0.55 0.4 0.55 0.35 0 0.5 V+ 0.85 1.0 V SYMBOL CONDITIONS TA MIN TYP MAX UNITS
On-Resistance
RON
On-Resistance Match Between Channels
RON
V+ = 2.7V, ICOM_ = 10mA, VNC_ or VNO_ = +1.5V (Notes 4, 5) V+ = +2.7V ICOM_ = 10mA, VNC_ or VNO_ = 0 or V+ (Notes 4, 5) V+ = 3V, ICOM_ = 10mA, VNO_ or VNC_ = 0V, 0.6V, or V+ (Note 6)
MAX4755 (NO1, NO2, N_3, N_4) MAX4754/ MAX4756
On-Resistance Flatness
RFLAT(ON)
0.55
2
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0.5, Quad SPDT Switches in UCSP/QFN
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at +3V and TA = +25C.) (Notes 2, 3)
PARAMETER NO_, NC_ Off-Leakage Current SYMBOL INO_(OFF), INC_(OFF) CONDITIONS V+ = 3.6V; VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 0.3V, 3.3V MAX4754/MAX4754A/MAX4755/MAX4756/ MAX4756A TA +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C Turn-On Time NC_ tON, NC V+ = 2.7V, VNC_ = 1.5V, RL = 50, CL = 35pF (Figure 1) MAX4754A/MAX4756A TMIN to TMAX +25C Turn-Off Time NC_ tOFF, NC V+ = 2.7V, VNC_ = 1.5V, RL = 50, CL = 35pF (Figure 1) MAX4754A/MAX4756A TMIN to TMAX +25C Turn-On Time NO_ tON, NO V+ = 2.7V, VNC_ = 1.5V, RL = 50, CL = 35pF (Figure 1) MAX4754A/MAX4756A TMIN to TMAX +25C Turn-Off Time NO_ tOFF, NO V+ = 2.7V, VNC_ = 1.5V, RL = 50, CL = 35pF (Figure 1) MAX4754A/MAX4756A V+ = 2.7V, VNO_, or VNC_ = 1.5V; RL = 50; CL = 35pF, (Figure 1) MAX4754/MAX4755/MAX4756 V+ = 2.7V, VNO_, or VNC_ = 1.5V; RL = 50; CL = 35pF (Figure 1) MAX4754/MAX4755/MAX4756 V+ = 2.7V, VNO_, or VNC_ = 1.5V; RL = 50, CL = 35pF (Figure 2) (Note 7) VGEN = 0V, RGEN = 0, CL = 1.0nF (Figure 3) Signal = 0dBm, CL = 50pF, Rs = 50, RL = 50 CL = 5pF, RL = 50, VCOM_ = 1VP-P f = 100kHz (Figure 4) (Note 8) CL = 5pF, RL = 50, VCOM_ = 1VP-P f = 100kHz (Figure 4) (Note 9) TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C Break-Before-Make Charge Injection On-Channel -3dB Bandwidth Off-Isolation Crosstalk tBBM Q BW VISO VCT TMIN to TMAX +25C +25C +25C +25C 2 300 10 -65 -90 15 ns pC MHz dB dB 25 45 300 70 27 MIN -4 -10 -6 -15 -3 -15 0.01 TYP MAX +4 +10 +6 +15 +3 +15 nA nA UNITS
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
COM_ Off-Leakage Current
V+ = 3.6V (MAX4756/MAX4756A); ICOM_(OFF) VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 0.3V, 3.3V V+ = 3.6V; VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 3.3V, 0.3V or unconnected
COM_ On-Leakage Current DYNAMIC
ICOM_(ON)
320
650 900 60 70 150 200 650 900 140 150 50 60 ns ns ns ns ns ns
Turn-On Time
tON
Turn-Off Time
tOFF
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at +3V and TA = +25C.) (Notes 2, 3)
PARAMETER Total Harmonic Distortion NO_, NC_ OffCapacitance COM_ Off-Capacitance COM_ On-Capacitance DIGITAL I/O (IN_, EN) V+ = 2.7V to 3.6V, MAX4754/MAX4755/MAX4756 Input Logic-High VIH V+ = 2.7V to 5.25V, MAX4754A/MAX4756A V+ = 3.6V to 5.25V, MAX4754/MAX4755/MAX4756 V+ = 2.7V to 3.6V, MAX4754/MAX4755/MAX4756 Input Logic-Low VIL V+ = 2.7V to 5.25V, MAX4754A/MAX4756A V+ = 3.6V to 5.25V, MAX4754/MAX4755/MAX4756 Input Leakage Current POWER SUPPLY Power-Supply Range V+ V+ = 5.5V, VIN_ = 0V or V+, MAX4754/MAX4754A/MAX4755/MAX4756/ MAX4756A Power-Supply Current I+ V+ = 5.5V, VIN_ = 0.5V or 1.4V, MAX4754A/MAX4756A TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX 6.5 12 A 1.8 0.2 2 A 5.5 V IIN VIN = 0V or V+ TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX 1.4 1.4 2.0 0.5 0.5 0.6 1 A V V SYMBOL THD CONDITIONS f = 20Hz to 20kHz, 1VP-P, RL = 32, VDC = V+/2 TA +25C +25C +25C +25C MIN TYP 0.035 180 300 400 MAX UNITS % pF pF pF
CNO_(OFF), VNO, VNC_ = GND, CNC_(OFF) f = 1MHz (Figure 5) CCOM_(OFF) VCOM_ = GND, f = 1MHz (Figure 5) C(ON) VCOM_ = GND, f = 1MHz (Figure 5)
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: UCSP parts are 100% tested at +25C and limits across the full temperature range are guaranteed by correlation and design. TQFN parts are 100% tested at +85C and limits across the full temperature range are guaranteed by correlation and design. Note 4: RON and RON matching specifications are guaranteed by design and correlation. Note 5: RON = RON(MAX) - RON(MIN). Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 7: Guaranteed by design, not production tested. Note 8: Off-Isolation = 20log10 [VCOM / (VNO or VNC)], VCOM = output, VNO or VNC = input to off switch. Note 9: Between any two switches.
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0.5, Quad SPDT Switches in UCSP/QFN
Typical Operating Characteristics
(V+ = 3V, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM (MAX4754A/MAX4756A)
MAX4754A-56A toc01
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4754A-56A toc02
ON-RESISTANCE vs. VCOM AND TEMPERATURE
0.9 0.8 0.7 RON (_) 0.6 0.5 0.4 TA = +85C TA = +25C V+ = +5.0V
MAX4754A-56A toc03
4.5 4.0 3.5 3.0 RON () 2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 VCOM (V) 4 5 V+ = 2.3V V+ = 2.7V V+ = 3.0V V+ = 2.7V V+ = 5.5V V+ = 1.8V
1.0 0.9 0.8 0.7 RON (_) 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 VCOM (V) 2 3 TA = -40C TA = +85C TA = +25C V+ = 3.0V
1.0
0.3 0.2 0.1 0 0 1 2 3 4 5 VCOM (V) TA = -40C
ON-RESISTANCE vs. VCOM
MAX4754A-56A toc04
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4754A-56A toc05
ON-RESISTANCE vs. VCOM AND TEMPERATURE
V+ = +5V 12.5 12.0 MAX4755 NC1, NC2 CHANNELS
MAX4754A-56A toc06
13.0 MAX4755 NC1, NC2 CHANNELS 12.5 12.0 RON () 11.5 11.0 10.5 10.0 0 V+ = +3.0V V+ = +5V V+ = +1.8V V+ = +2V V+ = +2.3V V+ = +2.5V
13.0 V+ = +3V 12.5 12.0 RON () 11.5 11.0 10.5 10.0 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 TA = +85C MAX4755 NC1, NC2 CHANNELS
13.0
RON ()
TA = +25C
11.5 11.0 10.5
TA = +85C TA = +25C
TA = -40C 3.0
TA = -40C 10.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V)
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V)
NO/NC OFF-LEAKAGE CURRENT vs. TEMPERATURE (MAX4754/MAX4755/MAX4756)
MAX4754A-56A toc07
COM ON-LEAKAGE CURRENT vs. TEMPERATURE
MAX4754A-56A toc08
CHARGE INJECTION vs. VCOM (MAX4754/MAX4755/MAX4756)
CL = 1nF V+ = 5V
MAX4754A-56A toc09
10 V+ = 5V NO/NC OFF-LEAKAGE (nA)
10 V+ = 5V COM ON-LEAKAGE CURRENT (nA)
1
1
CHARGE INJECTION (pC)
120 110 100 90 80 70 60 50 40 30 20 10 0
0.1
0.1
V+ = 3V
0.01 -40 -15 10 35 60 85 TEMPERATURE (C)
0.01 -40 -15 10 35 60 85 TEMPERATURE (C)
0
1
2
3
4
5
VCOM (V)
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4754A-56A toc10
CHARGE INJECTION vs. VCOM
250 CI = 1nF 200 CHARGE INJECTION (pC) 2.0 1.8 1.6 SUPPLY CURRENT (nA) 1.4 1.2 1.0 0.8 0.6 0.4 V+ = 3V 0 0 1 2 3 4 5 VCOM (V) 0.2 0 1 2
SUPPLY CURRENT vs. TEMPERATURE (MAX4754/MAX4755/MAX4756)
MAX4754A-56A toc11 MAX4754-56 toc12
100
10 SUPPLY CURRENT (nA)
V+ = 5V
150 V+ = 5V 100
1
0.1 V+ = 3.0V 0.01
50
0.001 3 4 5 6 -40 -15 10 35 60 85 SUPPLY VOLTAGE (V) TEMPERATURE (C)
SUPPLY CURRENT vs. TEMPERATURE (MAX4754A/MAX4756A)
MAX4754A-56A toc13
LOGIC THRESHOLD vs. SUPPLY VOLTAGE (MAX4754/MAX4755/MAX4756)
MAX4754A-56A toc14
LOGIC THRESHOLD vs. SUPPLY VOLTAGE (MAX4754A/MAX4756A)
MAX4754A-56A toc15
100
2.4 2.0 LOGIC THRESHOLD (V) 1.6 1.2 0.8 0.4 0 VIH VIL
1.4 1.2 LOGIC THRESHOLD (V) 1.0 0.8 0.6 0.4 0.2 0.0 VIH VII
10 SUPPLY CURRENT (nA) V+ = 5.0V 1 V+ = 3.0V
0.1
0.01
0.001 -40 -15 -10 35 60 85 TEMPERATURE (C)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.5
2.5
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE (MAX4754/MAX4755/MAX4756)
MAx4754A-56A toc16
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE (MAX4754A)
MAX4754A-56A toc17
TURN-ON/OFF TIMES vs. TEMPERATURE (MAX4754/MAX4755/MAX4756)
MAX4754A-56A toc18
70 60 50 tON/tOFF (ns) 40 tON 30 tOFF 20 10 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
800 700 600 tON/tOFF (ns) 500 tOFF, NO 400 300 200 100 0 tON, NO tOFF, NC tON, NC
50
40 tON, V+ = 3V tON/tOFF (ns) 30 tON, V+ = 5V
20 tOFF, V+ = 3V
10
tOFF, V+ = 5V
0 1.5 2.5 3.5 4.5 SUPPLY VOLTAGE (V) 5.5 -40 -15 10 35 60 85 TEMPERATURE (C)
5.5
SUPPLY VOLTAGE (V)
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25C, unless otherwise noted.)
TURN-ON/OFF TIMES vs. TEMPERATURE (MAX4754A)
MAX4754A-56A toc19
SUPPLY CURRENT vs. LOGIC CONTROL INPUT
V+ 5.5V 3500 CROWBAR CURRENT (nA) 3000 2500 2000 1500 1000 500 0 0 1 2 3 IN_ (V) 4 5 6
MAX4754A-56A toc20
FREQUENCY REPSONSE
0 -20 ON-LOSS (dB) -40 -60 -80 -100 -120 -140 0.0001 0.001 0.01 0.1 1 10 100 CROSS-TALK OFF-ISOLATION ON-LOSS
MAX4754A-56A toc21
450 400 350 300 tON/tOFF (ns) 250 200 150 100 50 0 -40 -15 10 35 60 SUPPLY VOLTAGE (V) tOFF, NC tON, NO tOFF, NO tON, NC
4000
20
85
FREQUENCY (MHz)
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
RL = 32
MAX4754A-56A toc22
1.0
THD + N (%)
0.1
0.01
0.001 0.01 0.1 1 FREQUENCY (kHz) 10 100
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Pin Description
PIN MAX4754/MAX4754A UCSP C1 C2 B1 A1 A2 B2 A3 A4 B4 B3 -- C4 D4 D3 C3 D2 D1 -- QFN 1 2 3 4 5 6 7 8 9 10 -- 11 12 13 14 15 16 EP MAX4755 UCSP C1 C2 B1 A1 A2 B2 A3 A4 B4 B3 -- C4 D4 D3 C3 D2 D1 -- QFN 1 2 3 4 5 6 7 8 9 10 -- 11 12 13 14 15 16 EP MAX4756/MAX4756A UCSP C1 C2 B1 A1 A2 B2 A3 A4 B4 -- B3 C4 D4 D3 C3 D2 D1 -- QFN 1 2 3 4 5 6 7 8 9 -- 10 11 12 13 14 15 16 EP NO1 INA COM1 NC1 NO4 V+ COM4 NC4 NO2 INB EN COM2 NC2 NO3 GND COM3 NC3 EP Analog Switch 1. Normally open terminal 1. Logic Control Digital Input for Switches 1 and 2. Digital control input for switches 1-4 for MAX4756. Analog Switch 1. Common terminal. Analog Switch 1. Normally closed terminal 1. Analog Switch 4. Normally open terminal 4. Positive Supply Voltage Analog Switch 4. Common terminal. Analog Switch 4. Normally closed terminal 4. Analog Switch 2. Normally open terminal 2. Logic Control Digital Input for Switches 3 and 4 Output Enable. Active low. Analog Switch 2. Common terminal 2. Analog Switch 2. Normally closed terminal 2. Analog Switch 3. Normally open terminal 3. Ground Analog Switch 3. Common terminal 3. Analog Switch 4. Normally closed terminal 3. Exposed Paddle. Connect EP to GND. NAME FUNCTION
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Typical Operating Circuit
INA NO1 INTERNAL SPEAKER (8) COM1 11 NC1 NO2 COM2 NC2 NO3 COM3 NC3 NO4 COM4 NC4 INB HEADPHONE (32) NC4 INB NC3 NO4 COM4 CAR-KIT SPEAKER (8) NC4 EN NC2 NO3 COM3 NC3 NO4 COM4 HEADPHONE (32) NC1 NO2 11 COM2 NC2 NO3 COM3 NC1 NO2 COM2 INA NO1 EAR SPEAKER (32) LOUD SPEAKER (8) COM1 INA NO1 INTERNAL SPEAKER (8) COM1
MAX4754/ MAX4754A
MAX4755
MAX4756/ MAX4756A
Detailed Description
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A low on-resistance analog switches operate from a single +1.8V to +5.5V supply. The devices are fully specified for nominal 3V applications. The MAX4754/MAX4754A DPDT switch have two logic control inputs with each input controlling two SPDT switches. Each switch has a 0.5 on-resistance in the NO and NC terminals making it ideal for switching audio signals. The MAX4755 DPDT switch also has four 0.5 SPDT switches with the switch pairs 1 and 2 adding an 11.5 series resistor to the NC terminal. This feature allows the user to drive an 8 speaker as a 32 load, allowing it to be used as an ear speaker. Two logic control inputs are used to control the four switches. The MAX4756/MAX4756A has four 0.5 SPDT switches controlled by one logic control input (INA) and EN input to disable the switches.
inputs rail-to-rail also minimizes power consumption. For a +3V supply voltage, the logic thresholds are 0.5V (low) and 1.4V (high). For the MAX4756/MAX4756A, drive EN low to enable the COM_. When EN is high, COM _ is high impedance.
Analog Signal Levels
Analog signal inputs over the full voltage range (0V to V+) are passed through the switch with minimal change in on-resistance (see the Typical Operating Characteristics). The switches are bidirectional so NO_, NC_, and COM_ can be either inputs or outputs.
Power-Supply Bypassing
Power-supply bypassing improves noise margin and prevents switching noise from propagating from the V+ supply to other components. A 0.1F capacitor connected from V+ to GND is adequate for most applications.
UCSP Applications Information
For the latest application details on UCSP construction, dimensions, tape carrier information, printed circuit board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, go to the Maxim website at www.maxim-ic.com/ucsp for the Application Note: UCSP--A Wafer-Level Chip-Scale Package.
Applications Information
Digital Control Inputs
The MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A logic inputs accept up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply IN_ can be driven low to GND and high to +5.5V, which allows mixed logic levels in a system. Driving the control logic
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0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Timing Circuits/Timing Diagrams
MAX4754/MAX4754A MAX4755/MAX4756/ MAX4756A
VN_ NO_ OR NC_ V+ V+ COM_ LOGIC INPUT VOUT RL IN_ LOGIC INPUT GND SWITCH OUTPUT 0V t ON CL VOUT 0.9 x V0UT t OFF 0.9 x VOUT V+ 50% 0V 50% t r < 5ns t f < 5ns
VOUT = VN_
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL RL + RON
(
)
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 1. Switching Time
MAX4754/MAX4754A MAX4755/MAX4756/ MAX4756A
VN_ NC_ NO_ IN_ LOGIC INPUT GND
V+ V+ COM_ RL VOUT LOGIC INPUT
V+ 50% 0V
CL
VOUT tBBM CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
0.9 x VOUT
Figure 2. Break-Before-Make Interval
V+
MAX4754/MAX4754A MAX4755/MAX4756/ MAX4756A
VOUT VOUT VOUT CL IN OFF ON OFF
V+ NC_ OR NO_ GND IN_ COM_
RGEN
V GEN
VIL TO VIH
IN
OFF
ON Q = (V OUT )(C L )
OFF
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 3. Charge Injection 10 ______________________________________________________________________________________
0.5, Quad SPDT Switches in UCSP/QFN
Timing Circuits/Timing Diagrams (continued)
+5V 10nF OFF-ISOLATION = 20log NETWORK ANALYZER 0V OR V+ IN_ V+ COM1 VIN 50 50 VOUT VIN
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
V ON-LOSS = 20log OUT VIN V CROSSTALK = 20log OUT VIN
NC1 50
MAX4754/MAX4754A MAX4755/MAX4756/ MAX4756A NO1*
GND
VOUT
MEAS
REF
50
50
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
*FOR CROSSTALK, THIS PIN IS NO2. NC2 AND COM2 ARE OPEN.
Figure 4. On-Loss, Off-Isolation, and Crosstalk
10nF
V+
V+
MAX4754/MAX4754A/ MAX4755/MAX4756/ MAX4756A COM_
IN CAPACITANCE METER f = 1MHz NC_ or NO_ GND
VIL OR VIH
Figure 5. Channel On-/Off-Capacitance
______________________________________________________________________________________
11
0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Pin Configurations/Truth Tables
TOP VIEW (BUMP SIDE DOWN) + A
INB (EN) 10
COM2
MAX4754/MAX4754A/MAX4755/ MAX4756/MAX4756A
NC2
1 NC1 2 NO4 3 COM4 4 NC4 NO3
MAX4754 MAX4754A MAX4755 MAX4756 MAX4756A
NO2 9 8 7 6
EP*
12 13 14 15 16
+
11
NC4 COM4
V+
B
COM1
V+
INB (EN)
NO2
GND COM3
C
NO1
INA
GND
COM2
NC3
5 2 INA 3 COM1 4 NC1
NO4
D
NC3
COM3
NO3
NC2
1 NO1
( ) FOR MAX4756/MAX4756A.
UCSP
MAX4754/MAX4754A/MAX4755 INA LOW HIGH INB LOW HIGH NO1/NO2 NC1/NC2 NO3/NO4 NC3/NC4 OFF ON -- -- ON OFF -- --
TQFN
*EP: EXPOSED PADDLE CONNECTED TO GND. MAX4756/MAX4756A EN LOW LOW HIGH HIGH INA LOW HIGH X X NO_ OFF ON OFF OFF NC_ ON OFF OFF OFF
-- --
-- --
OFF ON
ON OFF
Chip Information
PROCESS: CMOS
12
______________________________________________________________________________________
0.5, Quad SPDT Switches in UCSP/QFN
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
24L QFN THIN.EPS
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm
21-0139
E
1 2
______________________________________________________________________________________
13
0.5, Quad SPDT Switches in UCSP/QFN MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm
21-0139
E
2 2
14
______________________________________________________________________________________
0.5, Quad SPDT Switches in UCSP/QFN
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
MAX4754/MAX4754A/MAX4755/MAX4756/MAX4756A
PACKAGE OUTLINE, 4x4 UCSP 21-0101 H
1 1
Revision History
Pages changed at Rev 1: 1-5, 7, 8, 13, 14, 15
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 (c) 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
16L,UCSP.EPS

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