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19-1106; Rev 1; 11/96
KIT ATION EVALU ABLE AVAIL
300MHz, Low-Power, High-Output-Current, Differential Line Driver
____________________________Features
o 2V/V Fixed Gain o 300MHz -3dB Bandwidth o 2000V/s Slew Rate o 82dBc SFDR at 10kHz o 70dB CMR at 10MHz o Low Differential Gain/Phase: 0.008%/0.03 o High Output Drive: 5.6V into 53 o Low Power: 100mW
_______________General Description
The MAX4147 differential line driver offers high-speed performance while consuming only 100mW of power. Its amplifier has fully symmetrical inputs and outputs and uses laser-trimmed, matched, thin-film resistors to deliver 70dB CMR at 10MHz. Using current-feedback techniques, the MAX4147 achieves a 300MHz bandwidth and a 2000V/s slew rate. Optimized for differential, high-output-current applications such as transformer drivers, the MAX4147 drives 2.6V into a 26.5 load (single-ended) or 5.6V into a 53 load (differential). This device is preset for a closed-loop gain of 2V/V. Its ultra-low 0.008%/0.03 differential gain/phase allow for a variety of video and RF signal-processing applications. For power-sensitive applications, the MAX4147 has a shutdown function that reduces supply current to less than 1mA. In addition, superior SFDR (-82dBc at 10kHz, RL = 33) makes it ideal as a transformer driver for HDSL applications. For a complete differential transmission link, use the MAX4147 with the MAX4144 line receiver (see the MAX4144 data sheet for more information).
MAX4147
______________Ordering Information
PART MAX4147ESD TEMP. RANGE -40C to +85C PIN-PACKAGE 14 SO
__________________Pin Configuration
TOP VIEW
VEE 1 IN+ 2 N.C. 3 SHDN 4 N.C. 5 IN- 6 Rf RG Rf 14 VCC 13 OUT+ 12 SENSE+ 11 GND 10 SENSE9 OUT-
________________________Applications
VDSL, ADSL, HDSL Video Twisted-Pair Driver Differential Pulse Amplifier Differential ADC Driver
________Typical Application Circuit
VEE 7
MAX4147
8 VCC
SO
IN+
SENSE+
Rt OUT+ OUTRt
Rt INSENSE OUT
MAX4147
INSENSE-
MAX4144
IN+ Rt
VDSL TRANSFORMER ISOLATION
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
300MHz, Low-Power, High-Output-Current, Differential Line Driver MAX4147
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ..................................................12V Voltage on Any Input to Ground ......(VCC + 0.3V) to (VEE - 0.3V) Continuous Power Dissipation (TA = +70C) SO (derate 8.33mW/C above +70C) .........................667mW Short-Circuit Duration .........................................................10sec Operating Temperature Range MAX4147ESD ..................................................-40C to +85C Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) .............................+300C
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
(VCC = +5V, VEE = -5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER DC SPECIFICATIONS Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Input Voltage Noise Input Current Noise Input Capacitance Differential Input Resistance Differential Input Voltage Range Common-Mode Input Voltage Range Gain Gain Error Common-Mode Rejection Power-Supply Rejection Quiescent Supply Current Shutdown Supply Current CMR PSR ISY ISHDN VCM AV RL = RL = -1V VOUT +1V, RL = 53 -1V VOUT +1V, RL = 53 VCM = 2.8V VS = 4.5V to 5.5V VIN = 0, RL = VIN = 0, RL = Single-ended, RL = Output Voltage Swing 3.2 7.2 2.2 5.0 110 0.8 VSHDN 0.8V VSHDN 2V 75 10 150 Differential, RL = Single-ended, RL = 26.5 Differential, RL = 53 Output Current Drive SHDN High Threshold SHDN Low Threshold SHDN Input Current IOUT VIH VIL ISHDN VOUT = 2.2V 70 70 -3.6 -2.8 2 0.3 100 100 10 0.6 3.8 7.8 2.6 5.6 160 2.0 mA V V A nA V 13 1 1 VOS TCVOS IB IOS en In CIN VOUT = 0V, RL = VOUT = 0V, RL = VOUT = 0V, RL = , VIN = -VOS VOUT = 0V, RL = , VIN = -VOS f = 10kHz f = 1MHz to 100MHz f = 10kHz f = 1MHz to 100MHz 0.5 30 9 0.03 8 80 1.7 17 1 1 3.6 2.8 20 2 6 mV V/C A A nV/Hz VRMS pA/Hz nARMS pF M V V V/V % dB dB mA mA SYMBOL CONDITIONS MIN TYP MAX UNITS
| VOUT |
2
_______________________________________________________________________________________
300MHz, Low-Power, High-Output-Current, Differential Line Driver
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = -5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER AC SPECIFICATIONS -3dB Bandwidth Full-Power Bandwidth 0.1dB Bandwidth Common-Mode Rejection Slew Rate Settling Time Differential Gain Differential Phase BW(-3dB) FPBW BW(0.1dB) CMR SR ts DG DP VOUT 0.1VRMS VOUT = 2Vp-p VOUT 0.1VRMS f = 10MHz Differential, -2V VOUT +2V 1V VOUT +1V, RL = 150, AVCL = +2 f = 3.58MHz, RL = 150 f = 3.58MHz, RL = 150 fC = 10kHz, VOUT = 4.0Vp-p, RL = 33 singleended, RS = 50, Figure 1 fC = 5MHz, VOUT = 2Vp-p, RL = 150 differential, Figure 2 to 0.1% to 0.01% 300 250 70 70 2000 10 30 0.008 0.03 -82 dBc -75 MHz MHz MHz dB V/s ns % degrees SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4147
Spurious-Free Dynamic Range
SFDR
_______________________________________________________________________________________
3
300MHz, Low-Power, High-Output-Current, Differential Line Driver MAX4147
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4147 TOC-01
LARGE-SIGNAL GAIN vs. FREQUENCY
MAX4147-02
COMMON-MODE REJECTION vs. FREQUENCY
100 90 80 CMR (dB) 70 60 50 40 30 20 10
MAX4147 TOC-02
11 10 9 8 GAIN (dB)
AVCL = +2
11 10 9 8 GAIN (dB) 7 6 5 4 3 2 1
110
7 6 5 4 3 2 1 100k 1M 10M 100M 1G FREQUENCY (Hz)
100k
1M
10M
100M
1G
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
SMALL-SIGNAL PULSE RESPONSE
AVCL = +2 IN VOLTAGE (20mV/div) GND VOLTAGE (500mV/div) IN
LARGE-SIGNAL PULSE RESPONSE
AVCL = +2 GND
OUT
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
POWER-SUPPLY REJECTION vs. FREQUENCY
MAX4147-04
CLOSED-LOOP OUTPUT IMPEDANCE vs. FREQUENCY
3162.3 OUTPUT IMPEDANCE () 1000 316.2 100 31.6 10 3.16 1 0.32
MAX4147-06
ISOLATION RESISTANCE vs. CAPACITATIVE LOAD
30 ISOLATION RESISTANCE () 25 20 15 10 5 0
MAX4144/4147-07
110 100 90 80 PSR (dB) 70 60 50 40 30 20 10 100k 1M 10M 100M FREQUENCY (Hz)
10,000
35
0.1 100k
1M
10M
100M
0
50
100
150
200
250
FREQUENCY (Hz)
CAPACITATIVE LOAD (pF)
4
_______________________________________________________________________________________
300MHz, Low-Power, High-Output-Current, Differential Line Driver
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
MAX4147
VOLTAGE NOISE vs. FREQUENCY
MAX4147-08
CURRENT NOISE vs. FREQUENCY
MAX4147-09
5MHz HARMONIC DISTORTION vs. LOAD
-10 HARMONIC DISTORTION (dBc) -20 -30 -40 -50 -60 -70 -80 -90 2ND HARMONIC 3RD HARMONIC 0 200 400 600 800 1000 LOAD ()
MAX4144/4147-10
100
100
0
10
CURRENT NOISE (nA/Hz)
VOLTAGE NOISE (nV/Hz)
10
1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
-100
HARMONIC DISTORTION vs. FREQUENCY
MAX4147 TOC-05
5MHz HARMONIC DISTORTION vs. OUTPUT SWING
-10 HARMONIC DISTORTION (dBc) -20 -30 -40 -50 -60 -70 -80 -90 100M -100 0 1 2 3 4 OUTPUT SWING (Vp-p) 2ND HARMONIC 3RD HARMONIC
MAX4144/4147-12
OUTPUT SWING vs. LOAD RESISTANCE
16 OUTPUT SWING (Vp-p) 14 12 10 8 6 4 0 50 100 150 200 250 LOAD ()
MAX4144/4147-13
-30 HARMONIC DISTORTION (dBc) -40 -50 -60 -70 -80 -90
AVCL = +2V V0 = 2Vp-p
0
18
3RD HARMONIC
2ND HARMONIC -100 100k 1M 10M FREQUENCY (Hz)
POWER-SUPPLY CURRENT vs. TEMPERATURE
MAX4144/4147-14
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX4144/4147-15
INPUT BIAS CURRENT vs. TEMPERATURE
MAX4144/4147-16
12
2.0 1.5 VOLTAGE (mV) 1.0 0.5 0 -0.5 -1.0
16 14 CURRENT (A) 12 10 8 6 4
11 CURRENT (mA)
10
9
8
7 -75 -50 -25 0 25 50 75 100 125 TEMPERATURE (C)
-75 -50 -25
0
25
50
75
100 125
-75 -50 -25
0
25
50
75
100 125
TEMPERATURE (C)
TEMPERATURE (C)
_______________________________________________________________________________________
5
300MHz, Low-Power, High-Output-Current, Differential Line Driver MAX4147
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
DIFFERENTIAL OUTPUT VOLTAGE SWING vs. TEMPERATURE
MAX4144/4147-17
SMALL-SIGNAL GAIN vs. FREQUENCY AND CAPACITIVE LOAD
MAX4147-18
DIFFERENTIAL GAIN AND PHASE
0.006 A = +2V/V 0.005 V 0.000 -0.005 -0.010 -0.020 0 IRE 0.04 0.03 AV = +2V/V 0.02 0.01 0.00 -0.01 0 IRE 100 GAIN (%)
MAX4147 TOC-06
8.2 8.1 8.0
+16 +14 +12 +10 GAIN (dB) +8 +6 +4 +2 0 -2 CL=5pF CL = 15pF CL = 10pF
VOLTAGE (V)
7.9 7.8 7.7 7.6 -75 -50 -25 0 25 50 75 100 125 TEMPERATURE (C)
100
-4 100k
1M
10M
100M
FREQUENCY (Hz)
______________________________________________________________Pin Description
PIN 1, 7 2 3, 5 4 6 8, 14 9 10 11 12 13 NAME VEE IN+ N.C. SHDN INVCC OUTSENSEGND SENSE+ OUT+ Negative Power Supply. Connect to -5V. Noninverting Input No Connect. Not internally connected. Logic Input for Shutdown Circuitry. A logic low enables the amplifier. A logic high disables the amplifier. The amplifier outputs are high impedance in shutdown mode; thus the impedances seen at OUT+ and OUT- are that of the feedback resistors and the protection circuitry (Figure 3). Inverting Input Positive Power Supply Inverting Output Sense Line for the Inverting Output. Connect to OUT-, close to the pin. Ground Sense Line for the Noninverting Output. Connect to OUT+, close to the pin. Noninverting Output FUNCTION
6
_______________________________________________________________________________________
PHASE (deg)
300MHz, Low-Power, High-Output-Current, Differential Line Driver MAX4147
MAX4147
IN+ RG 50 RT 50 OUT+ VMEASURE 33 RG 50 IN+ RT 50
MAX4147
OUT+ VMEASURE+
150
33 OUTININOUTVMEASURE-
Figure 1. Single-Ended Distortion Setup
Figure 2. Differential Distortion Setup
IN-
MAX4147
OUT700 1.4k
700
OUT+
IN+
Figure 3. MAX4147 Shutdown Equivalent Circuit
_______________________________________________________________________________________ 7
300MHz, Low-Power, High-Output-Current, Differential Line Driver MAX4147
________________________________________________________Package Information
DIM INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.157 0.150 0.050 0.244 0.228 0.050 0.016 MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 3.80 4.00 1.27 5.80 6.20 0.40 1.27
D A e B
0.101mm 0.004in.
0-8
A1
C
L
A A1 B C E e H L
E
H
Narrow SO SMALL-OUTLINE PACKAGE (0.150 in.)
DIM PINS D D D 8 14 16
INCHES MILLIMETERS MIN MAX MIN MAX 0.189 0.197 4.80 5.00 0.337 0.344 8.55 8.75 0.386 0.394 9.80 10.00
21-0041A
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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