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LTC1380/LTC1393 Single-Ended 8-Channel/ Differential 4-Channel Analog Multiplexer with SMBus Interface
FEATURES
s s s s s s s s s
DESCRIPTION
The LTC(R)1380/LTC1393 are CMOS analog multiplexers with SMBus(R) compatible digital interfaces. The LTC1380 is a single-ended 8-channel multiplexer, while the LTC1393 is a differential 4-channel multiplexer. The SMBus digital interface requires only two wires (SCL and SDA). Both the LTC1380 and the LTC1393 have four hard-wired SMBus addresses, selectable with two external address pins. This allows four devices, each with a unique SMBus address, to coexist on one system and for four devices to be synchronized with one stop bit. The supply current is typically 10A. Both digital interface pins are SMBus compatible over the full operating supply voltage range. The LTC1380 analog switches feature a typical RON of 35 (5V supplies), typical switch leakage of 20pA and guaranteed break-before-make operation. Charge injection is 1pC typical. The LTC1380/LTC1393 are available in 16-lead SO and GN packages. Operation is fully specified over the commercial and industrial temperature ranges.
, LTC and LT are registered trademarks of Linear Technology Corporation. SMBus is a registered trademark of Intel Corporation.
Micropower Operation: Supply Current = 20A Max 2-Wire SMBus Interface Single 2.7V to 5V Supply Operation Expandable to 32 Single or 16 Differential Channels Guaranteed Break-Before-Make Low RON: 35 Single Ended/70 Differential Low Charge Injection: 20pC Max Low Leakage: 5nA Max Available in 16-Lead SO and GN Packages
APPLICATIONS
s s s s s
Data Acquisition Systems Process Control Laptop Computers Signal Multiplexing/Demultiplexing Analog-to-Digital Conversion Systems
TYPICAL APPLICATION
LTC1380 Single-Ended 8-Channel Multiplexer
5V
On Resistance vs VS
250 225 TA = 25C ID = 1mA VCC = 2.7V VEE = 0V
SMBus HOST
1 2 3 4 8 ANALOG INPUTS 5 6 7 8
S0 S1 S2 S3 S4 S5 S6 S7
ON RESISTANCE ()
VCC SCL SDA LTC1380 A0 A1 GND VEE DO
16 15 14 13 12 11 10 9
0.1F
15k
15k
200 175 150 125 100 75 50 VCC = 5V VEE = - 5V VCC = 5V VEE = 0V
SCL SDA
0.1F - 5V ANALOG OUTPUT
1380/93 TA01
25 0 -5 -4 -3 -2 -1 01 VS (V) 2 3 4 5
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1167 G15
1
LTC1380/LTC1393
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage LTC1380 (VCC to VEE) ......................................... 15V LTC1393 (VCC to GND) ....................................... 15V Analog Input Voltage LTC1380 ............................. VEE - 0.3V to VCC + 0.3V LTC1393 ................................... - 0.3V to VCC + 0.3V Digital Inputs .............................................- 0.3V to 15V LTC1380 (VCC TO VEE) .... (VEE - 0.3V) to (VEE + 15V) LTC1393 (VCC to GND) .......................... - 0.3V to 15V
PACKAGE/ORDER INFORMATION
TOP VIEW S0 1 S1 2 S2 3 S3 4 S4 5 S5 6 S6 7 S7 8 16 VCC 15 SCL 14 SDA 13 A0 12 A1 11 GND 10 VEE 9 DO
ORDER PART NUMBER LTC1380CGN LTC1380CS LTC1380IGN LTC1380IS
GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125C, JA = 130C/ W (GN) TJMAX = 125C, JA = 100C/ W (S)
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
SYMBOL VANALOG RON PARAMETER Analog Signal Range On Resistance CONDITIONS LTC1380 LTC1393
(Notes 2, 4)
MIN
q q q
LT1380: VCC = 5V, VEE = - 5V, VEE (VS, VD) VCC, ID = 1mA LT1393: VCC = 5V, 0V (VS, VD) V CC, ID = 1mA LT1380/LTC1393: VCC = 2.7V, VEE = 0V, 0V (VS, VD) VCC, ID = 1mA
RON vs VS RON vs Temperature ILEAK Off-Channel or On-Channel Switch Leakage
VEE (VS, VD) VCC, VCC = 5V VCC = 5V LTC1380: (VEE + 0.5V) (VS, VD) (VCC - 0.5V) LTC1393: 0.5V (VS, VD) (VCC - 0.5V)
q
2
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W
WW U
W
Maximum Switch-On Current .............................. 65mA Power Dissipation ............................................. 500mW Operating Ambient Temperature Range LTC1380C/LTC1393C ....................... 0C TA 70C LTC1380I/LTC1393I .................... - 40C TA 85C Junction Temperature ........................................... 125C Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
TOP VIEW S0 + 1 S0 - 2 S1+ 3 S1- 4 S2+ 5 S2- 6 S3+ 7 S3- 8 16 VCC 15 SCL 14 SDA 13 A0 12 A1 11 GND 10 DO- 9 DO+
ORDER PART NUMBER LTC1393CGN LTC1393CS LTC1393IGN LTC1393IS
GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125C, JA = 130C/ W (GN) TJMAX = 125C, JA = 100C/ W (S)
TYP
MAX VCC VCC
UNITS V V % %/C
VEE 0 35 70
70 120 140 200 400 600
q
210
q
20 0.5 0.05 5 50
nA nA
LTC1380/LTC1393
ELECTRICAL CHARACTERISTICS
SYMBOL VIH VIL VOL VAH VAL IIN ICC IEE CS CD tON PARAMETER SCL, SDA Input High Voltage SCL, SDA Input Low Voltage SDA Output Low Voltage Address Input High Voltage Address Input Low Voltage SCL, SDA, Address Input Current Positive Supply Current Negative Supply Current Input Off Capacitance Output Off Capacitance Switch Turn-On Time from Stop Condition Switch Turn-Off Time from Stop Condition Break-Before-Make Interval Off-Channel Isolation Charge Injection SMBus Operating Frequency Bus Free Time Between Stop/Start Hold Time After (Repeated) Start Repeated Start Setup Time Stop Condition Setup Time Data Hold Time Data Setup Time Clock Low Period Clock High Period SCL/SDA Fall Time SCL/SDA Rise Time ISDA = 3mA VCC = 5V VCC = 5V 0V VIN VCC CONDITIONS
(Notes 2, 4)
MIN
q q q q q
TYP
MAX 0.6 0.4
UNITS V V V V V A A A pF pF pF
1.4
2 0.8 1 10 - 0.1 3 26 18 20 -5
VCC = 5V, All Digital Inputs at 5V LTC1380: VCC = 5V, VEE = - 5V, All Digital Inputs at 5V (Note 3) (Note 3) LTC1380 LTC1393 Figure 1 LTC1380: VCC = 5V, VEE = - 5V LTC1393: VCC = 5V LTC1380/LTC1393: VCC = 2.7V, VEE = 0V Figure 1 LTC1380: VCC = 5V, VEE = - 5V LTC1393: VCC = 5V LTC1380/LTC1393: VCC = 2.7V, VEE = 0V tON - tOFF Figure 2, VS = 200mVP-P, RL = 1k, f = 100kHz (Note 3) Figure 3, CL = 1000pF (Note 3)
q q
q q q q q q q
850 850 1130 640 650 670 75 210 - 65 1
1500 1500 2000 1200 1200 1200
ns ns ns ns ns ns ns dB
tOFF
tOPEN OIRR QINJ fSMB tBUF tHD:STA tSU:STA tSU:STO tHD:DAT tSU:DAT tLOW tHIGH tf tr
q
20 100
pC kHz s s s s ns ns s s
SMBus Timing (Note 6)
q q q q q q q q q
4.7 4.0 4.7 4.0 300 250 4.7 4.0 300 1000
Time Interval Between 0.9VDD and (VILMAX - 0.15) Time Interval Between (VILMAX - 0.15) and (VIHMIN + 0.15)
q q
ns ns
The q denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All current into device pins is positive; all current out of device pins is negative. All voltages are referenced to ground unless otherwise specified. All typicals are given for TA = 25C, VCC = 5V (for both LTC1380 and LTC1393) and VEE = - 5V (LTC1380).
Note 3: These typical parameters are based on bench measurements and are not production tested. Note 4: Both SCL and SDA assume an external 15k pull-up resistor to a typical SMBus host power supply VDD of 5V. Note 5: Typical curves with VEE = - 5V apply to the LTC1380. Curves with VEE = 0V apply to both the LTC1380 and the LTC1393. Note 6: These parameters are guaranteed by design and are not tested in production.
3
LTC1380/LTC1393 TYPICAL PERFOR A CE CHARACTERISTICS
On Resistance vs Temperature
250 225 200 ID = 1mA 0.0020 0.0018 0.0016
IS LEAKAGE (nA)
ON RESISTANCE ()
ID LEAKAGE (nA)
175 150 125 100 75 50 25 0 - 50 -25 VCC = 5V VEE = - 5V VS = 0V
VCC = 2.7V VEE = 0V VS = 1.35V VCC = 5V VEE = 0V VS = 2.5V
50 25 0 75 TEMPERATURE (C)
On-Channel Input Leakage vs VS
0.010 0.008 0.006 TA = 25C 0.010 0.008 0.006
ID LEAKAGE (nA)
IS LEAKAGE (nA)
0.002 0 - 0.002 - 0.004 - 0.006 - 0.008
VCC = 5V VEE = - 5V
IS LEAKAGE (nA)
0.004 VCC = 2.7V VEE = 0V
VCC = 5V VEE = 0V
- 0.010 - 4.5 - 3.5 - 2.5 -1.5 - 0.5 0.5 1.5 2.5 3.5 4.5 VS (V)
1380/93 G04
Off-Channel Output Leakage vs Temperature
1000 100 10 1 0.1 0.01 0.001 0.0001 - 50 - 25 VCC = 5V VEE = - 5V VD = 0V 1000 100 10 1 0.1 0.01 0.001
ID LEAKAGE (nA)
VCC = 5V VEE = 0V VD = 2.5V
VCC = 5V VEE = - 5V VS = 0V VCC = 2.7V VEE = 0V VS = 1.35V
ID LEAKAGE (nA)
IS LEAKAGE (nA)
VCC = 2.7V VEE = 0V VD = 1.35V
50 25 75 0 TEMPERATURE (C)
4
UW
100
(Note 5)
Off-Channel Input Leakage vs VS
0.010 TA = 25C VCC = 5V VEE = - 5V VCC = 2.7V VEE = 0V VCC = 5V VEE = 0V 0.008 0.006 0.004 0.002 0 - 0.002 - 0.004 - 0.006 - 0.008
Off-Channel Output Leakage vs VD
TA = 25C
0.0014 0.0012 0.0010 0.0008 0.0006 0.0004 0.0002
VCC = 5V VEE = - 5V VCC = 5V VEE = 0V VCC = 2.7V VEE = 0V
125
0 - 4.5 - 3.5 - 2.5 -1.5 - 0.5 0.5 1.5 2.5 3.5 4.5 VS (V)
1380/93 G02
- 0.010 - 4.5 - 3.5 - 2.5 -1.5 - 0.5 0.5 1.5 2.5 3.5 4.5 VD (V)
1380/93 G03
1380/93 G01
On-Channel Output Leakage vs VD
10 TA = 25C 1 VCC = 5V VEE = - 5V
Off-Channel Input Leakage vs Temperature
VCC = 2.7V VEE = 0V VS = 1.35V VCC = 5V VEE = 0V VS = 2.5V VCC = 5V VEE = - 5V VS = 0V
0.004 0.002 0 - 0.002 - 0.004 - 0.006 - 0.008
0.1
VCC = 2.7V VEE = 0V
0.01
0.001 VCC = 5V VEE = 0V 0.0001 -50 -25 50 0 75 25 TEMPERATURE (C)
- 0.010 - 4.5 - 3.5 - 2.5 -1.5 - 0.5 0.5 1.5 2.5 3.5 4.5 VD (V)
1380/93 G05
100
125
1380/93 G06
On-Channel Input Leakage vs Temperature
1000 VCC = 5V VEE = 0V VS = 2.5V 100 10 1 0.1 0.01 0.001
On-Channel Output Leakage vs Temperature
VCC = 2.7V VEE = 0V VD = 1.35V
VCC = 5V VEE = 0V VD = 2.5V
VCC = 5V VEE = - 5V VD = 0V
100
125
0.0001 - 50 - 25
50 25 75 0 TEMPERATURE (C)
100
125
0.0001 - 50 - 25
50 25 75 0 TEMPERATURE (C)
100
125
1380/93 G07
1380/93 G08
1380/93 G09
LTC1380/LTC1393 TYPICAL PERFOR A CE CHARACTERISTICS
Off Time vs Temperature
800 700 600 VCC = 2.7V VEE = 0V VS = 1.35V VCC = 5V VEE = - 5V VS = 0V VCC = 5V VEE = 0V VS = 2.5V 1600 1400 1200
ON TIME (ns)
OFF TIME (ns)
400 300 200 100 0 - 50 - 25 0 50 75 25 TEMPERATURE (C) 100 125
800 600 400 200 0 - 50 - 25 0
VCC = 5V VEE = 0V VS = 2.5V
QINJ (pC)
500
QINJ vs Temperature (Figure 3)
2.0 1.8 1.6 1.4
QINJ(pC)
OIRR (dB)
1.2 1.0 0.8 0.6 0.4 0.2 0 -50 -25 VCC = 5V VEE = 0V VS = 2.5V VCC = 2.7V VEE = 0V VS = 1.35V
ICC vs Temperature
10 9 8 7
ICC (A)
5 4 3 2 1 0 -50 -25 50 25 0 75 TEMPERATURE (C) 100 125
IEE (nA)
6
VCC = 2.7V VEE = 0V
UW
VCC = 5V VEE = - 5V VS = 0V
(Note 5) QINJ vs VC (Figure 3)
5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 VCC = 2.7V VEE = 0V - 5 - 4 - 3 - 2 -1 01 VC (V) 2 3 4 5 VCC = 5V VEE = 0V VCC = 5V VEE = - 5V TA = 25C
On Time vs Temperature
VCC = 5V VEE = - 5V VS = 0V
VCC = 2.7V VEE = 0V VS = 1.35V
1000
50 75 25 TEMPERATURE (C)
100
125
0
1380/93 G10
1380/93 G11
1380/93 G12
Off-Channel Isolation vs Input Common Mode Voltage (Figure 2)
- 75 - 74 - 73 - 72 - 71 - 70 - 69 - 68 - 67 - 66 - 65 TA = 25C VS = 200mVP-P, 100kHz RL = 1k - 5 - 4 - 3 -2 -1 01 VC (V) 2 3 4 5 VCC = 5V VEE = - 5V VCC = 5V VEE = 0V VCC = 2.7V VEE = 0V
50 25 0 75 TEMPERATURE (C)
100
125
1380/93 G13
1380/93 G14
IEE vs Temperature
0 VCC = 5V VEE = - 5V -10 -20 - 30 VCC = 5V VEE = - 5V VS = 0V
VCC = 5V VEE = 0V
- 40 - 50 - 60 -70 - 80 - 90
-100 -50 -25
50 25 0 75 TEMPERATURE (C)
100
125
1380/93 G15
1380/93 G16
5
LTC1380/LTC1393
PIN FUNCTIONS
S0 to S7/S0 to S3 (Pin 1 to Pin 8): Single-Ended Analog Multiplexer Inputs (S0 to S7) for the LTC1380. Differential Analog Multiplexer Inputs (S0 to S3 ) for the LTC1393. DO/DO+ (Pin 9): Analog Multiplexer Output for the LTC1380. Positive Differential Analog Multiplexer Output for the LTC1393. VEE/DO - (Pin 10): Negative Supply Pin for the LTC1380. Negative Differential Multiplexer Output for the LTC1393. For the LTC1380, VEE should be bypassed to GND with a 0.1F ceramic capacitor when operating from split supplies or connected to GND for single supply operation. GND (Pin 11): Ground Pin. A1, AO (Pin 12, Pin 13): Address Selection Pins. Tie these two pins to either VCC or GND to select one of four possible addresses to which the LTC1380/LTC1393 will respond. SDA (Pin 14): SMBus Bidirectional Digital Input/Output Pin. This pin has an open-drain output and requires a pullup resistor or current source to the positive supply for normal operation. Data is shifted into and acknowledged by the LTC1380/LTC1393 using this pin. SCL (Pin 15): SMBus Clock Input. SDA data is shifted in at rising edges of this clock during data transfer. VCC (Pin 16): Positive Supply Pin. This pin should be bypassed to GND with a 0.1F ceramic capacitor.
BLOCK DIAGRA
6
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ANALOG INPUTS (LTC1380: S0 TO S7) (LTC1393: S0 TO S3 )
MULTIPLEXER SWITCHES
ANALOG OUTPUT(S) (LTC1380: DO) (LTC1393: DO)
4-BIT LATCH AND DECODER
SHIFT REGISTER
HOLD
A0 A1
ADDRESS COMPARATOR
SDA SCL
SMBus STATE MACHINE
STOP
1380/93 BD
LTC1380/LTC1393
TEST CIRCUITS
SCL SDA
SCL SDA LTC1380 S D RL 1k CL 35pF VD SDA SCL
STOP CONDITION WITH EN = 1 1.5V 0.4V 1.5V 0.4V 1V tON
STOP CONDITION WITH EN = 0
1V
1V tOFF 80%
1380/93 F01
VC 1/2 * (VCC + VEE)
VD
VC
20% tr < 20ns, tf < 20ns
Figure 1. Switch tON /tOFF Propagation Delay from SMBus STOP Condition
SCL SDA
SCL SDA LTC1380 S D VD OIRR = 20LOG10 (VD / VS) WHERE VS AND VD ARE THE AC VOLTAGE COMPONENTS AT S AND D
VS 200mVP-P 100kHz VC1 1/2 * (VCC + VEE)
RL 1k VC2 1/2 * (VCC + VEE)
1380/93 F02
Figure 2. Off-Channel Isolation (OIRR) Test
SCL SDA
SCL SDA LTC1380 S D
CHARGE INJECTION Q = VD * CL VD CL 1000pF
STOP CONDITION WITH EN = 1 SCL 1.5V 0.4V 1.5V 0.4V VC VD
STOP CONDITION WITH EN = 0
VC
SDA
VD
VD
1380/93 F03
Figure 3. Charge Injection Test
7
LTC1380/LTC1393 TI I G DIAGRA
S SCL tHD:STA SDA FROM HOST 1 tBUF SDA FROM LTC1380/LTC1393 tOPEN DO 0 0 1 * A1 tLOW A0 0 tSU:DAT X X X X tHD:DAT EN C2 C1 C0 tSU:STA tSU:STO
APPLICATIONS INFORMATION
Theory of Operation The LTC1380/LTC1393 are analog input multiplexers with an SMBus digital interface. The LTC1380 is a single-ended 8-to-1 multiplexer; the LTC1393 is a differential 4-to-1 mulitplexer. The LTC1380 operates on either bipolar or unipolar supplies, the LTC1393 operates on a single supply. The minimum VCC supply for the LTC1380/LTC1393 is 2.7V. The maximum supply voltage (VCC to VEE for the LTC1380, VCC for the LTC1393) should not exceed 14V. The multiplexer switches operate within the entire power supply range. The LTC1380 VCC and VEE supplies can be offset such as 2.7V/-11V and 11V/- 3V. Serial Interface The LTC1380/LTC1393 serial interface supports SMBus send byte protocol as shown below with two interface signals, SCL and SDA.
LTC1380 Send Byte Protocol
S 1 0 0 1 0 A1 A0 W A X X X X EN C2 C1 C0 A P
LTC1393 Send Byte Protocol
S 1 0 0 1 1 A1 A0 W A X X X X EN C2 C1 C0 A P ADDRESS BYTE COMMAND BYTE
S = SMBus START BIT P = SMBus STOP BIT (THE FIRST STOP BIT AFTER A SUCCESSFUL COMMAND BYTE UPDATES THE MULTIPLEXER CONTROL LATCH) A = ACKNOWLEDGE BIT FROM LTC1380/LTC1393 W = WRITE COMMAND BIT A1, A0 = ADDRESS BITS EN, C2, C1, C0 = MULTIPLEXER CONTROL BITS
8
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W
W
ADDRESS BYTE tHIGH tr COMMAND BYTE tf S P *0 FOR LTC1380, 1 FOR LTC1393 tOFF tON
U
U
UW
A send byte protocol is initiated by the SMBus host with a start bit followed by a 7-bit address code and a write bit. Each slave compares the address code with its address. The send byte write bit is Low. The selected slaves then reply with an acknowledge bit by pulling the SDA line Low. Next, the host sends an 8-bit command byte. When the selected slave receives the whole command byte, it acknowledges and retains the command byte in the shift register. The host can terminate the serial transfer with a stop bit or communicate with another slave device with a repeat start. When a repeat start occurs but the slave is not selected, the command byte data is kept in the shift register but the multiplexer control is not updated. The multiplexer control latches the new command from the shift register on the first stop bit after a successful command byte transfer. This allows the host to synchronize several slave devices with a single stop bit. A1 and A0 select one of the four possible LTC1380/LTC1393 addresses as shown in Table 1. This allows up to four similar devices to share the same SMBus, expanding the multiplexer to 32 single-ended channels with the LTC1380; 16 differential channels with the LTC1393. The first stop bit after a successful send byte transfer will latch in the multiplexer control bits (EN, C2, C1 and C0) and initiate a break-before-make sequence.
LTC1380/LTC1393
APPLICATIONS INFORMATION
Table 1. LTC1380/LTC1393 Address Selection
A1 0 0 1 1 A0 0 1 0 1 LTC1380 90H 92H 94H 96H LTC1393 98H 9AH 9CH 9EH
SCL is the synchronizing clock generated by the host. SDA is the bidirectional data transfer between the host and the slave. The host initiates a start bit by dropping the SDA line from High to Low while the SCL is High. The stop bit is initiated by changing the SDA line from Low to High while SCL is High. All address, command and acknowledge signals must be valid and should not change while SCL is High. The acknowledge bit signals to the host the acceptance of a correct address byte or the command byte. At VCC supply above 2.7V, the SCL and SDA input threshold is typically 1V with an input hysteresis of 100mV. The typical SCL and SDA lines have either a resistive or current source pull-up at the host. The LTC1380/LTC1393 have an open-drain NMOS transistor at the SDA pin to sink 3mA below 0.4V during the slave acknowledge sequence. The address selection input A1 and A0 are TTL compatible at VCC = 5V.
TYPICAL APPLICATIONS
Simplified LTC1393 Application
5V
1 2 3 4 4 DIFFERENTIAL ANALOG INPUTS 5 6 7 8
S0 + S0 - S1+ S1- S2+ S2- S3+ S3-
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W
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Both the LTC1380 and LTC1393 are compatible with the Philips/Signetics I2C Bus interface. This 1V threshold for SCA and SDA should not pose an operational problem with I2C applications. The multiplexer switches are selected as shown in Table 2. Both the LTC1380 and the LTC1393 have an enable bit (EN). A Low disables all switches while a High enables the selected switch as programmed by bits C2, C1 and C0. A stop bit after a successful send byte sequence for LTC1380/ LTC1393 will disable all switches before the new selected switch is connected.
Table 2. Multiplexer Control Bits Truth Table
EN 0 1 1 1 1 1 1 1 1 C2 X 0 0 0 0 1 1 1 1 C1 X 0 0 1 1 0 0 1 1 C0 X 0 1 0 1 0 1 0 1 LTC1380 DO CHANNEL STATUS All Off S0 S1 S2 S3 S4 S5 S6 S7 S3 +, S3 - S2 +, S2 - S1 +, S1 - LTC1393 DO+, DO- CHANNEL STATUS All Off S0 +, S0 -
VCC SCL SDA A0 LTC1393 A1
16 15 14 13 12 11 10 9
0.1F
15k
15k
SMBus HOST SCL SDA
GND DO- DO+
DIFFERENTIAL ANALOG OUTPUTS
1380/93 TA03
9
LTC1380/LTC1393
TYPICAL APPLICATIONS
16-Channel Multiplexer with Buffer
5V
16 ANALOG INPUTS
S5 S6 S7
GND VEE DO
7 8
10 9
- 5V 0.1F
Programmable Gain Amplifier
5V R0 R1 R2 R3 R4 R5 R6 R7
1 2 3 4 5 6 7 8
S0 S1 S2 S3 S4 S5 S6 S7
VCC SCL SDA LTC1380 A0 A1 GND VEE DO
16 15 14 13 12 11 10 9
0.1F
15k
RF
-
LT1055 ANALOG INPUT VOUT
+
1380/93 TA05
10
+
-
U
1 2 3 4 5 6 7 8
S0 S1 S2 S3 S4 S5 S6 S7
VCC SCL SDA A0 LTC1380 A1
16 15 14 13 12 11 10 9
0.1F
15k
15k
SMBus HOST SCL SDA
GND VEE DO
1 2 3 4 5 6
S0 S1 S2 S3 S4
VCC SCL SDA A0 LTC1380 A1
16 15 14 13 12 11
LT1351
VOUT
1380/93 TA04
15k
SMBus HOST SCL SDA
0.1F - 5V
LTC1380/LTC1393
PACKAGE DESCRIPTION
0.007 - 0.0098 (0.178 - 0.249) 0.016 - 0.050 (0.406 - 1.270)
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0 - 8 TYP
0.016 - 0.050 0.406 - 1.270 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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Dimensions in inches (millimeters) unless otherwise noted.
GN Package 16-Lead Plastic SSOP (Narrow 0.150)
(LTC DWG # 05-08-1641)
0.189 - 0.196* (4.801 - 4.978) 16 15 14 13 12 11 10 9
0.229 - 0.244 (5.817 - 6.198)
0.150 - 0.157** (3.810 - 3.988)
1 0.015 0.004 x 45 (0.38 0.10) 0 - 8 TYP 0.053 - 0.068 (1.351 - 1.727)
23
4
56
7
8 0.004 - 0.0098 (0.102 - 0.249)
0.008 - 0.012 (0.203 - 0.305)
0.025 (0.635) BSC
GN16 (SSOP) 1197
S Package 16-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.386 - 0.394* (9.804 - 10.008) 16 15 14 13 12 11 10 9
0.228 - 0.244 (5.791 - 6.197)
0.150 - 0.157** (3.810 - 3.988)
1 0.053 - 0.069 (1.346 - 1.752)
2
3
4
5
6
7
8
0.004 - 0.010 (0.101 - 0.254)
0.014 - 0.019 (0.355 - 0.483)
0.050 (1.270) TYP
S16 0695
11
LTC1380/LTC1393
TYPICAL APPLICATION
8 Differential Channel Multiplexer with A/D Converter
8 DIFFERENTIAL ANALOG INPUTS 1 2 3 4 5 6 7 8 S0 + S0 - S1+ S1- S2+ S2- S3+ S3- LTC1393 VCC SCL SDA A0 A1 16 15 14 13 12 11 10 9 LTC1286 8 VCC VREF 7 2 + IN CLK 3 6 - IN DOUT 5 4 GND CS/SHDN 1 4.7F
RELATED PARTS
PART NUMBER LTC201A/LTC202/ LTC203 LTC221/LTC222 LTC1390/LTC1391 LTC1623 DESCRIPTION Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches Micropower, Low Charge Injection, Quad CMOS Analog Switches 8-Channel, Analog Multiplexer with Serial Interface High Side Switch with SMBus Interface COMMENTS Each Channel is Independently Controlled Parallel Controlled with Data Latches 3V to 5V in 16-Pin SO and PDIP Regulated On-Board Charge Pump Drives External N-Channel MOSFETS
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417 q (408) 432-1900 FAX: (408) 434-0507 q TELEX: 499-3977 q www.linear-tech.com
U
1 2 3 4 5 6 7 8
5V
S0 + S0 - S1+ S1- S2+ S2- S3+ S3-
VCC SCL SDA A0 LTC1393 A1
16 15 14 13 12 11 10 9
0.1F
15k
15k
SMBus HOST SCL SDA
GND DO- DO+
GND DO- DO+
SERIAL CLOCK IN SERIAL CLOCK OUT CS
1380/93 TA06
138093f LT/GP 0398 4K * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1998

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