Maxim MAX4142ESD Datasheet
EVALUATION KIT
AVAILABLE
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General Description
The MAX4142 differential line driver combines highspeed performance with fully symmetrical differential
inputs and outputs. With an internally set +2V/V closedloop gain, the MAX4142 is ideal for driving backterminated cables and transmission lines.
This device utilizes laser-trimmed thin-film resistors and
common-mode cancellation circuitry to deliver an outstanding 67dB at 10MHz common-mode rejection
(CMR). Using current-feedback techniques, the
MAX4142 achieves a 250MHz -3dB (AV= +2V/V) bandwidth, a 70MHz 0.1dB bandwidth, and a 1400V/µs slew
rate. Excellent differential gain/phase error and noise
specifications make this amplifier an excellent choice
for a wide variety of video and RF signal-processing
applications.
The MAX4142 operates from ±5V power supplies and
requires only 12.5mA of quiescent current. The output
stage is capable of driving a 100Ω load to ±6V (differentially) or to ±3V (single-ended). The MAX4142 is
available in a space-saving 14-pin SO package. For a
pin-compatible, higher speed differential line driver,
see the MAX4147 data sheet.
________________________Applications
Video Twisted-Pair Driver
Differential Pulse Amplifier
High-Speed Instrumentation Amplifier
Low-Noise Differential Receivers
Differential ADC Driver
____________________________Features
♦ 250MHz -3dB Bandwidth (AV= +2V/V)
♦ 1400V/µs Slew Rate
♦ 67dB at 10MHz CMR
♦ 0.01%/0.01° Differential Gain/Phase
♦ ±6V Differentially into 100Ω Output Drive
♦ 1mA Shutdown Capability
♦ 12.5mA Quiescent Supply Current
♦ Available in 14-Pin Narrow SO Package
MAX4142
250MHz, Low-Power,
High-Output-Current, Differential Line Driver
________________________________________________________________
Maxim Integrated Products
1
GND
OUT+
IN+
IN-
IN-
SENSE
IN+
OUT-
SENSE-
SENSE+
R
t
R
t
R
t
R
t
OUT
REF
75Ω
75Ω
COAX
75Ω
V
OUT
MAX4142
MAX4144
Typical Application Circuit
19-4763; Rev 0; 7/98
Ordering Information
TWISTED-PAIR TO COAX-CABLE CONVERTER
PART
MAX4142ESD
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
14 SO
Pin Configuration
14
13
12
11
10
9
8
1
2
3
4
5
6
7
V
CC
OUT+
SENSE+
GND
SHDN
N.C.
IN+
V
EE
TOP VIEW
MAX4142
SENSEOUTV
CC
V
EE
IN-
N.C.
SO
N.C. = NOT INTERNALLY CONNECTED
MAX4142
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC= +5V, VEE= -5V, SHDN = 0, RL= ∞, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values specified at TA= +25°C.)
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.
Supply Voltage (VCCto VEE)................................................+12V
Voltage on Any Pin to Ground..........(V
EE
- 0.3V) to (VCC+ 0.3V)
Input Current (IN_)............................................................±10mA
Short-Circuit Duration (V
OUT
to GND)................................10sec
Continuous Power Dissipation (T
A
= +70°C)
Plastic SO (derate 8.3mW/°C above +70°C) ................667mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
Differential Input Voltage Range -3.0 3.0 VGuaranteed by output voltage swing test
SHDN Input Current I
SHDN
66 150 µAV
SHDN
= 0
Output Resistance R
OUT
0.1 Ω
SHDN Logic-High Threshold V
IH
2.0 V
SHDN Logic-Low Threshold V
IL
0.8 V
Enable Time from Shutdown t
ON
500 ns
Disable Time to Shutdown t
OFF
3.5 µs
PARAMETER SYMBOL MIN TYP MAX UNITS
Input Offset Current I
OS
0.2 2.5 µA
Input Bias Current I
B
10 25 µA
Input Capacitance C
IN
1 pF
Differential Input Resistance R
IN
1 MΩ
Input Offset Voltage
Operating Supply Voltage ±4.5 ±5.5 V
V
OS
0.4 8 mV
Input Offset Voltage Drift TC
VOS
3 µV/°C
Common-Mode Input Voltage Range V
CM
-1.7 1.7 V
Gain A
V
2 V/V
Gain Error 0.3 2 %
Gain Drift 20 ppm/°C
Common-Mode Rejection CMR 55 80 dB
Power-Supply Rejection PSR 65 95 dB
Quiescent Supply Current I
CC, IEE
12.5 18 mA
Shutdown Supply Current I
CC, SHDN
1.0 2.0 mA
3.0 3.4
6.0 6.8
2.0 2.4
Output Voltage Swing
V
OUT
4.0 4.8
V
Output Current Drive I
OUT
120 75 mA
CONDITIONS
Guaranteed by CMR test
-1V ≤ V
OUT
≤ 1V, RL= 53Ω
V
IN
= 0
V
IN
= 0
-1V ≤ V
OUT
≤ 1V, RL= 53Ω
RL= 53Ω
VCM= ±1.7V
VS= ±4.5V to ±5.5V
VIN= 0
Guaranteed by PSR test
V
SHDN
≥ 2V, VIN= 0
V
IN
= 0
Single-ended, RL= ∞
Differential, RL= ∞
V
IN
= 0
Single-ended, RL= 26.5Ω
Differential, RL= 53Ω
RL= 20Ω
MAX4142
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(VCC= +5V, VEE= -5V, SHDN = 0V, RL= 150Ω differential, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values specified at
T
A
= +25°C.)
__________________________________________Typical Operating Characteristics
(VCC= +5V, VEE= -5V, SHDN = 0, RL= 150Ω differential, TA = +25°C, unless otherwise noted.)
10
0
0.1 10 10001 100
SMALL-SIGNAL GAIN
vs. FREQUENCY
2
MAX4142-01
FREQUENCY (MHz)
GAIN (dB)
4
6
8
9
1
3
5
7
V
OUT
= 100mVp-p
6.4
5.4
0.1 10 10001 100
GAIN FLATNESS vs. FREQUENCY
5.6
MAX4142-02
FREQUENCY (MHz)
GAIN (dB)
5.8
6.0
6.2
6.3
5.5
5.7
5.9
6.1
V
OUT
= 100mVp-p
10
0
0.1 10 10001 100
LARGE-SIGNAL GAIN
vs. FREQUENCY
2
MAX4142-03
FREQUENCY (MHz)
GAIN (dB)
4
6
8
9
1
3
5
7
V
OUT
= 2Vp-p
to 0.01%
to 0.1%
PARAMETER SYMBOL MIN TYP MAX UNITS
Settling Time t
S
45
25
ns
Slew Rate SR 1400 V/µs
Common-Mode Rejection CMR 67 dB
Differential Gain DG 0.01 %
Differential Phase DP 0.01 degrees
2
Input Current Noise i
n
20
pA√Hz
Full-Power Bandwidth
-3dB Bandwidth BW
(-3dB)
250 MHz
FPBW 180 MHz
0.1dB Bandwidth BW
(0.1dB)
70 MHz
CONDITIONS
-1V ≤ V
OUT
≤ +1V
Differential, -2V ≤ V
OUT
≤ +2V
f = 10MHz, VCM= ±2V
f = 3.58MHz
f = 3.58MHz
f = 10kHz
f = 1MHz to 100MHz
V
OUT
≤ 0.1V
RMS
V
OUT
= 2Vp-p
V
OUT
≤ 0.1V
RMS
-84
Spurious-Free Dynamic
Range
SFDR
-76
dBc
fC= 500kHz, V
OUT
= 1Vp-p, RS= 50Ω, Figure1
fC= 10MHz, V
OUT
= 1Vp-p, RS= 50Ω, Figure1
8
Input Voltage Noise e
n
80
nV/√Hz
f = 10kHz
f = 1MHz to 100MHz µV
RMS
nA
RMS
MAX4142
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
4 _______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(VCC= +5V, VEE= -5V, SHDN = 0, RL= 150Ω differential, TA = +25°C, unless otherwise noted.)
10
110
0.1 101 100
POWER-SUPPLY REJECTION
vs. FREQUENCY
90
MAX4142-04
FREQUENCY (MHz)
PSR (dB)
70
50
30
20
100
80
60
40
-10
90
0.1 10 10001 100
COMMON-MODE REJECTION
vs. FREQUENCY
70
MAX4142-05
FREQUENCY (MHz)
CMR (dB)
50
30
10
0
80
60
40
20
0.01
0.1
1
10
100
1000
0.1 101 100
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4142-06
FREQUENCY (MHz)
OUTPUT IMPEDANCE (Ω)
1
10
100
10 100 1k 10k 100k 1M
VOLTAGE-NOISE DENSITY
vs. FREQUENCY
MAX4142-07
FREQUENCY (Hz)
VOLTAGE-NOISE DENSITY (nV/√
Hz
)
-100
-90
-60
-80
-70
-50
-30
-40
-20
0 400200 600 800 1000 1200
DISTORTION vs. LOAD
MAX4142-10
RESISTIVE LOAD (Ω)
DISTORTION (dBc)
2nd ORDER
HARMONIC
3rd ORDER
HARMONIC
fO = 5MHz,
V
OUT
= 1Vp-p
1
10
100
10 100 1k 10k 100k 1M
CURRENT-NOISE DENSITY
vs. FREQUENCY
MAX4142-08
FREQUENCY (Hz)
CURRENT-NOISE DENSITY (pA/√
Hz
)
0.1 1 10 100
HARMONIC DISTORTION
vs. FREQUENCY
MAX4142-09
FREQUENCY (MHz)
DISTORTION (dBc)
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
RL = 150Ω
V
OUT
= 1Vp-p
2nd
HARMONIC
3rd
HARMONIC
-100
-90
-80
-70
-60
-50
-40
-30
-20
0 42 6 8 10 12
HARMONIC DISTORTION
vs. OUTPUT VOLTAGE SWING
MAX4142-11
OUTPUT VOLTAGE SWING (Vp-p)
DISTORTION (dBc)
f = 5MHz
R
L
= 150Ω
2nd
HARMONIC
3rd
HARMONIC
-0.005
0 100
0 100
DIFFERENTIAL GAIN AND PHASE
-0.005
0.000
0.000
0.005
0.005
0.010
0.010
0.015
IRE
DIFF. PHASE (deg)
DIFF. GAIN (%)
MAX4142-12
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