19-4763; Rev 0; 7/98
KIT
ATION
EVALU
BLE
AVAILA
250MHz, Low-Power,
High-Output-Current, Differential Line Driver
General Description
____________________________Features
o
250MHz -3dB Bandwidth (A
V
= +2V/V)
o
1400V/µs Slew Rate
o
67dB at 10MHz CMR
o
0.01%/0.01° Differential Gain/Phase
o
±6V Differentially into 100Ω Output Drive
o
1mA Shutdown Capability
o
12.5mA Quiescent Supply Current
o
Available in 14-Pin Narrow SO Package
MAX4142
The MAX4142 differential line driver combines high-
speed performance with fully symmetrical differential
inputs and outputs. With an internally set +2V/V closed-
loop gain, the MAX4142 is ideal for driving back-
terminated cables and transmission lines.
This device utilizes laser-trimmed thin-film resistors and
common-mode cancellation circuitry to deliver an out-
standing 67dB at 10MHz common-mode rejection
(CMR). Using current-feedback techniques, the
MAX4142 achieves a 250MHz -3dB (A
V
= +2V/V) band-
width, 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 (differ-
entially) 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.
Ordering Information
PART
MAX4142ESD
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
14 SO
Pin Configuration
TOP VIEW
V
EE
1
IN+ 2
N.C. 3
14 V
CC
________________________Applications
Video Twisted-Pair Driver
Differential Pulse Amplifier
High-Speed Instrumentation Amplifier
Low-Noise Differential Receivers
Differential ADC Driver
MAX4142
13 OUT+
12 SENSE+
11 GND
10 SENSE-
9
8
OUT-
V
CC
SHDN 4
N.C. 5
IN- 6
V
EE
7
SO
N.C. = NOT INTERNALLY CONNECTED
Typical Application Circuit
IN+
SENSE+
OUT+
R
t
R
t
SENSE
IN-
75Ω
75Ω
COAX
V
OUT
OUT
75Ω
MAX4142
IN-
SENSE-
GND
OUT-
IN+
R
t
MAX4144
R
t
REF
TWISTED-PAIR TO COAX-CABLE CONVERTER
________________________________________________________________
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.
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
MAX4142
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
)................................................+12V
Voltage on Any Pin to Ground..........(V
EE
- 0.3V) to (V
CC
+ 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
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.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, SHDN = 0, R
L
=
∞
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values specified at T
A
= +25°C.)
,
PARAMETER
Operating Supply Voltage
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Capacitance
Differential Input Resistance
Differential Input Voltage Range
Common-Mode Input Voltage Range
Gain
Gain Error
Gain Drift
Common-Mode Rejection
Power-Supply Rejection
Quiescent Supply Current
Shutdown Supply Current
CMR
PSR
I
CC,
I
EE
I
CC, SHDN
V
CM
A
V
V
OS
TC
VOS
I
B
I
OS
C
IN
R
IN
Guaranteed by output voltage swing test
Guaranteed by CMR test
-1V
≤
V
OUT
≤
1V, R
L
= 53Ω
-1V
≤
V
OUT
≤
1V, R
L
= 53Ω
R
L
= 53Ω
V
CM
= ±1.7V
V
S
= ±4.5V to ±5.5V
V
IN
= 0
V
SHDN
≥
2V, V
IN
= 0
Single-ended, R
L
=
∞
Output Voltage Swing
3.0
6.0
2.0
4.0
120
Differential, R
L
=
∞
Single-ended, R
L
= 26.5Ω
Differential, R
L
= 53Ω
Output Current Drive
Output Resistance
SHDN Logic-High Threshold
SHDN Logic-Low Threshold
Enable Time from Shutdown
Disable Time to Shutdown
SHDN Input Current
I
OUT
R
OUT
V
IH
V
IL
t
ON
t
OFF
I
SHDN
V
SHDN
= 0
0.8
500
3.5
66
150
R
L
= 20Ω
55
65
-3.0
-1.7
2
0.3
20
80
95
12.5
1.0
3.4
6.8
2.4
4.8
75
0.1
2.0
mA
Ω
V
V
ns
µs
µA
V
18
2.0
2
SYMBOL
V
IN
= 0
V
IN
= 0
V
IN
= 0
V
IN
= 0
CONDITIONS
Guaranteed by PSR test
MIN
±4.5
0.4
3
10
0.2
1
1
3.0
1.7
25
2.5
TYP
MAX
±5.5
8
UNITS
V
mV
µV/°C
µA
µA
pF
MΩ
V
V
V/V
%
ppm/°C
dB
dB
mA
mA
V
OUT
2
_______________________________________________________________________________________
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, SHDN = 0V, R
L
= 150Ω differential,
CONDITIONS
T
MAX
, unless otherwise noted. Typical values specified at
T
A
= T
MIN
to
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
T
-3dB
+25°C.)
A
=
Bandwidth
BW
(-3dB)
V
OUT
≤
0.1V
RMS
250
MHz
Full-Power Bandwidth
0.1dB Bandwidth
Common-Mode Rejection
Slew Rate
Settling Time
Differential Gain
Differential Phase
Input Voltage Noise
Input Current Noise
Spurious-Free Dynamic
Range
FPBW
BW
(0.1dB)
CMR
SR
t
S
DG
DP
e
n
i
n
SFDR
V
OUT
= 2Vp-p
V
OUT
≤
0.1V
RMS
f = 10MHz, V
CM
= ±2V
Differential, -2V
≤
V
OUT
≤
+2V
-1V
≤
V
OUT
≤
+1V
f = 3.58MHz
f = 3.58MHz
f = 10kHz
f = 1MHz to 100MHz
f = 10kHz
f = 1MHz to 100MHz
f
C
= 500kHz, V
OUT
= 1Vp-p, R
S
= 50Ω, Figure1
f
C
= 10MHz, V
OUT
= 1Vp-p, R
S
= 50Ω, Figure1
to 0.1%
to 0.01%
180
70
67
1400
25
45
0.01
0.01
8
80
2
20
-84
-76
MHz
MHz
dB
V/µs
ns
%
degrees
nV/√Hz
µV
RMS
pA√Hz
nA
RMS
dBc
MAX4142
__________________________________________Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5V, SHDN = 0, R
L
= 150Ω differential, T
A
= +25°C, unless otherwise noted.)
SMALL-SIGNAL GAIN
vs. FREQUENCY
MAX4142-01
GAIN FLATNESS vs. FREQUENCY
MAX4142-02
LARGE-SIGNAL GAIN
vs. FREQUENCY
9
8
7
GAIN (dB)
6
5
4
3
2
1
0
V
OUT
= 2Vp-p
MAX4142-03
10
9
8
7
GAIN (dB)
V
OUT
= 100mVp-p
6.4
6.3
6.2
6.1
GAIN (dB)
6.0
5.9
5.8
5.7
5.6
5.5
5.4
V
OUT
= 100mVp-p
10
6
5
4
3
2
1
0
0.1
1
10
FREQUENCY (MHz)
100
1000
0.1
1
10
FREQUENCY (MHz)
100
1000
0.1
1
10
FREQUENCY (MHz)
100
1000
_______________________________________________________________________________________
3
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
MAX4142
_____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, SHDN = 0, R
L
= 150Ω differential, T
A
= +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX4142-04
COMMON-MODE REJECTION
vs. FREQUENCY
MAX4142-05
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4142-06
10
20
30
40
-10
0
10
20
CMR (dB)
30
40
50
60
70
80
90
1000
PSR (dB)
50
60
70
80
90
100
110
0.1
1
10
FREQUENCY (MHz)
100
OUTPUT IMPEDANCE (Ω)
0.1
1
10
FREQUENCY (MHz)
100
1000
100
10
1
0.1
0.01
0.1
1
10
FREQUENCY (MHz)
100
VOLTAGE-NOISE DENSITY
vs. FREQUENCY
MAX4142-07
CURRENT-NOISE DENSITY
vs. FREQUENCY
MAX4142-08
HARMONIC DISTORTION
vs. FREQUENCY
-10
-20
DISTORTION (dBc)
-30
-40
-50
-60
-70
-80
3rd
HARMONIC
0.1
1
10
100
2nd
HARMONIC
R
L
= 150Ω
V
OUT
= 1Vp-p
MAX4142-09
100
VOLTAGE-NOISE DENSITY (nV/√Hz)
100
CURRENT-NOISE DENSITY (pA/√Hz)
0
10
10
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
-90
FREQUENCY (MHz)
DISTORTION vs. LOAD
MAX4142-10
HARMONIC DISTORTION
vs. OUTPUT VOLTAGE SWING
MAX4142-11
DIFFERENTIAL GAIN AND PHASE
DIFF. GAIN (%)
0.010
0.005
0.000
-0.005
0
DIFF. PHASE (deg)
100
MAX4142-12
-20
-30
-40
DISTORTION (dBc)
-50
-60
-70
-80
-90
-100
0
200
400
600
800
1000
2nd ORDER
HARMONIC
f
O
= 5MHz,
V
OUT
= 1Vp-p
-20
-30
-40
DISTORTION (dBc)
-50
-60
-70
-80
-90
-100
0
0.015
f = 5MHz
R
L
= 150Ω
3rd
HARMONIC
0.010
0.005
0.000
-0.005
2
4
6
8
10
12
2nd
HARMONIC
3rd ORDER
HARMONIC
1200
0
IRE
100
RESISTIVE LOAD (Ω)
OUTPUT VOLTAGE SWING (Vp-p)
4
_______________________________________________________________________________________
250MHz, Low-Power, High-Output-Current,
Differential Line Driver
_____________________________Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, SHDN = 0, R
L
= 150Ω differential, T
A
= +25°C, unless otherwise noted.)
DIFFERENTIAL OUTPUT SWING
vs. LOAD RESISTANCE
MAX4142-13
MAX4142
DIFFERENTIAL OUTPUT VOLTAGE
SWING vs. TEMPERATURE
MAX4142-14
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
0.9
INPUT OFFSET VOLTAGE (mV))
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
MAX4142-15
18
16
OUTPUT SWING (Vp-p)
14
12
10
8
6
4
2
0
0
100
200
300
400
18
DIFFERENTIAL OUTPUT VOLTAGE SWING (V)
R
L
= 1MΩ DIFFERENTIAL
17
16
15
14
13
12
1
0
-45 -30 -15
0
15
30
45
60
75
90
-45 -30 -15
0
15
30
45
60
75
90
TEMPERATURE (°C)
TEMPERATURE (°C)
500
LOAD RESISTANCE (Ω)
INPUT BIAS CURRENT
vs. TEMPERATURE
19
INPUT BIAS CURRENT (µA)
17
15
13
11
9
7
5
-45 -30 -15
0
15
30
45
60
75
90
TEMPERATURE (°C)
MAX4142-16
INPUT OFFSET CURRENT
vs. TEMPERATURE
MAX4142-17
POWER-SUPPLY CURRENT
vs. TEMPERATURE
14.5
POWER-SUPPLY CURRENT (mA)
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
MAX4142-18
1.0
0.9
INPUT OFFSET CURRENT (µA)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-45 -30 -15
0
15
30
45
60
75
15.0
90
-45 -30 -15
0
15
30
45
60
75
90
TEMPERATURE (°C)
TEMPERATURE (°C)
SMALL-SIGNAL PULSE RESPONSE
MAX4142-19
LARGE-SIGNAL PULSE RESPONSE
MAX4142-20
ENABLE RESPONSE TIME
MAX4142-21
5V
VOLTAGE (500mV/div)
IN
VOLTAGE (25mV/div)
GND
IN
GND
SHDN
0V
2V
OUT
GND
V
OUT
0V
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
TIME (2µs/div)
_______________________________________________________________________________________
5
