19-1106; Rev 1; 11/96
KIT
ATION
EVALU
E
BL
AVAILA
300MHz, Low-Power,
High-Output-Current, Differential Line Driver
____________________________Features
o
2V/V Fixed Gain
o
300MHz -3dB Bandwidth
o
2000V/µs 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 53Ω
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 band-
width and a 2000V/µs slew rate.
Optimized for differential, high-output-current applica-
tions such as transformer drivers, the MAX4147 drives
±2.6V into a 26.5Ω load (single-ended) or ±5.6V into a
53Ω load (differential). This device is preset for a
closed-loop gain of 2V/V. Its ultra-low 0.008%/0.03° dif-
ferential 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, R
L
= 33Ω) 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
-40°C to +85°C
PIN-PACKAGE
14 SO
__________________Pin Configuration
TOP VIEW
V
EE
1
IN+ 2
N.C. 3
SHDN 4
N.C. 5
IN- 6
R
f
R
G
R
f
14 V
CC
13 OUT+
12 SENSE+
11 GND
10 SENSE-
9 OUT-
________________________Applications
VDSL, ADSL, HDSL
Video Twisted-Pair Driver
Differential Pulse Amplifier
Differential ADC Driver
________Typical Application Circuit
V
EE
7
MAX4147
8 V
CC
SO
IN+
SENSE+
R
t
OUT+
OUT-
R
t
R
t
IN-
SENSE
OUT
MAX4147
IN-
SENSE-
MAX4144
IN+
R
t
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 (V
CC
to V
EE
) ..................................................12V
Voltage on Any Input to Ground ......(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
SO (derate 8.33mW/°C above +70°C) .........................667mW
Short-Circuit Duration .........................................................10sec
Operating Temperature Range
MAX4147ESD ..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
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
I
SY
I
SHDN
V
CM
A
V
R
L
=
∞
R
L
=
∞
-1V
≤
V
OUT
≤
+1V, R
L
= 53Ω
-1V
≤
V
OUT
≤
+1V, R
L
= 53Ω
V
CM
= ±2.8V
V
S
= ±4.5V to ±5.5V
V
IN
= 0, R
L
=
∞
V
IN
= 0, R
L
=
∞
Single-ended, R
L
=
∞
Output Voltage Swing
3.2
7.2
2.2
5.0
110
0.8
V
SHDN
≤
0.8V
V
SHDN
≥
2V
75
10
150
Differential, R
L
=
∞
Single-ended, R
L
= 26.5Ω
Differential, R
L
= 53Ω
Output Current Drive
SHDN High Threshold
SHDN Low Threshold
SHDN Input Current
I
OUT
V
IH
V
IL
I
SHDN
V
OUT
= ±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
µA
nA
V
13
1
1
V
OS
TCV
OS
I
B
I
OS
e
n
I
n
C
IN
V
OUT
= 0V, R
L
=
∞
V
OUT
= 0V, R
L
=
∞
V
OUT
= 0V, R
L
=
∞,
V
IN
= -V
OS
V
OUT
= 0V, R
L
=
∞,
V
IN
= -V
OS
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
µV/°C
µA
µA
nV/√Hz
µV
RMS
pA/√Hz
nA
RMS
pF
MΩ
V
V
V/V
%
dB
dB
mA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
|
V
OUT
|
2
_______________________________________________________________________________________
300MHz, Low-Power,
High-Output-Current, Differential Line Driver
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= -5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
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
t
s
DG
DP
V
OUT
≤
0.1V
RMS
V
OUT
= 2Vp-p
V
OUT
≤
0.1V
RMS
f = 10MHz
Differential, -2V
≤
V
OUT
≤
+2V
1V
≤
V
OUT
≤
+1V, R
L
= 150Ω,
A
VCL
= +2
f = 3.58MHz, R
L
= 150Ω
f = 3.58MHz, R
L
= 150Ω
f
C
= 10kHz, V
OUT
= 4.0Vp-p, R
L
= 33Ω single-
ended, R
S
= 50Ω, Figure 1
f
C
= 5MHz, V
OUT
= 2Vp-p,
R
L
= 150Ω 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/µs
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
(V
CC
= +5V, V
EE
= -5V, R
L
= 150Ω, T
A
= +25°C, 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)
A
VCL
= +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
A
VCL
= +2
IN
VOLTAGE (20mV/div)
GND
VOLTAGE (500mV/div)
IN
LARGE-SIGNAL
PULSE RESPONSE
A
VCL
= +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 (Ω)
1000
316.2
100
31.6
10
3.16
1
0.32
MAX4147-06
ISOLATION RESISTANCE
vs. CAPACITATIVE LOAD
30
ISOLATION RESISTANCE (Ω)
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)
(V
CC
= +5V, V
EE
= -5V, R
L
= 150Ω, T
A
= +25°C, 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 (Ω)
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 (Ω)
MAX4144/4147-13
-30
HARMONIC DISTORTION (dBc)
-40
-50
-60
-70
-80
-90
A
VCL
= +2V
V
0
= 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 (µA)
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
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