LT1252CN8#PBF

LT1252
1
Low Cost
Video Amplifier
S
F
EA
T
U
RE
D
U
ESCRIPTIO
RGB Cable Drivers
Composite Video Cable Drivers
Gain Blocks in IF Stages
U
S
A
O
PP
L
IC
AT
I
U
A
O
PP
L
IC
AT
ITY
P
I
CA
L
Transient Response
LT1252 • TA02
V
IN
V
OUT
R
G
620
R
F
620
75
75
CABLE
75
+
LT1252
LT1252 • TA01
A
V
= 1 +
R
F
R
G
AT AMPLIFIER OUTPUT.
6dB LESS AT V
OUT
.
BW = 100MHz
5V
–5V
V
S
= ±5V
A
V
= 2
R
L
= 150
V
O
= 1V
Low Cost
Current Feedback Amplifier
Differential Gain: 0.01%, R
L
= 150, V
S
= ±5V
Differential Phase: 0.09°, R
L
= 150, V
S
= ±5V
Flat to 30MHz, 0.1dB
100MHz Bandwidth on ±5V
Wide Supply Range: ±2V(4V) to ±14V(28V)
Low Power: 85mW at ±5V
The LT1252 is a low cost current feedback amplifier for
video applications. The LT1252 is ideal for driving low
impedance loads such as cables and filters. The wide
bandwidth and high slew rate of this amplifier make
driving RGB signals between PCs and workstations easy.
The linearity of the LT1252 is outstanding; it is unsur-
passed for driving composite video.
The LT1252 is available in the 8-pin DIP and the S8 surface
mount package. For higher performance and shutdown
operation, see the LT1227. For dual and quad amplifiers
with similar performance see the LT1253/LT1254.
2
LT1252
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage 515 mV
+I
B
Noninverting Bias Current 115 µA
–I
B
Inverting Bias Current 20 100 µA
A
VOL
Large-Signal Voltage Gain V
S
= ±5V, V
O
= ±2V, R
L
= 150 560 1500 V/V
PSRR Power Supply Rejection Ratio V
S
= ±3V to ±12V 60 70 dB
CMRR Common-Mode Rejection Ratio V
S
= ±5V, V
CM
= ±2V 55 65 dB
V
OUT
Maximum Output Voltage Swing V
S
= ±12V, R
L
= 500Ω±7.0 ±10.5 V
V
S
= ±5V, R
L
= 150Ω±2.5 ±3.7 V
I
OUT
Maximum Output Current 30 55 mA
I
S
Supply Current 8.5 18 mA
R
IN
Input Resistance 110 M
C
IN
Input Capacitance 3pF
Power Supply Range Dual ±2 ±12 V
Single 4 24 V
SR Input Slew Rate A
V
= 1 125 V/µs
Output Slew Rate A
V
= 2 250 V/µs
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
ORDER PART
NUMBER
S8 PART MARKING
LT1252CS8
1252
LT1252CN8
8
7
6
54
3
2
1
–IN
+IN
NC
TOP VIEW
N8 PACKAGE
8-LEAD PLASTIC DIP
NC
V
+
V
OUT
NC
T
JMAX
= 150°C, θ
JA
= 150°C/W
T
JMAX
= 150°C, θ
JA
= 100°C/ W
1
2
3
4
8
7
6
5
TOP VIEW
NC
V
+
OUT
NC
NC
IN
+IN
V
S8 PACKAGE
8-LEAD PLASTIC SO
ELECTRICAL CHARACTERISTICS
0°C T
A
70°C, V
S
= ±5V to ±12V, unless otherwise noted.
Total Supply Voltage (V
+
to V
) ............................. 28V
Input Current ..................................................... ±15mA
Output Short-Circuit Duration (Note 1)........ Continuous
Operating Temperature Range .................... 0°C to 70°C
Storage Temperature Range ................ 65°C to 150°C
Junction Temperature (Note 2)............................ 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
LT1252
3
SMALL SIGNAL SMALL SIGNAL SMALL SIGNAL
V
S
A
V
R
L
R
F
R
G
3dB BW (MHz) 0.1dB BW (MHz) PEAKING (dB)
±12 1 150 2370 None 282 45 1.9
±12 1 1000 1100 1100 58 17 0.1
±12 1 150 909 909 73 34 0.1
±12 2 1000 1210 1210 253 20 0.1
±12 2 150 909 909 142 38 0.1
±12 5 1000 1000 249 73 25 0.1
±12 5 150 866 215 75 31 0.1
±12 10 1000 909 100 67 26 0.1
±12 10 150 768 84.5 69 32 0.1
±5 1 1000 2210 None 260 10 2.4
±5 1 150 1300 None 232 50 0.8
±5 1 1000 1000 1000 50 11 0.1
±5 1 150 732 732 69 34 0.1
±5 2 1000 909 909 133 24 0.1
±5 2 150 787 787 100 30 0.1
±5 5 1000 825 205 62 21 0.1
±5 5 150 698 174 66 30 0.1
±5 10 1000 750 82.5 58 22 0.1
±5 10 150 619 68.1 60 30 0.1
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
r
Small-Signal Rise Time V
S
= ±12V, A
V
= 2 3.5 ns
Rise and Fall Time V
S
= ±5V, A
V
= 2, V
OUT
= 1V
P-P
5.2 ns
t
p
Propagation Delay V
S
= ±5V, A
V
= 2 3.5 ns
Note 1: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 2: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LT1252CN8: T
J
= T
A
+ (P
D
× 100°C/W)
LT1252CS8: T
J
= T
A
+ (P
D
× 150°C/W)
TYPICAL AC PERFOR A CE
WU
BANDWIDTH
ELECTRICAL CHARACTERISTICS
0°C T
A
70°C, V
S
= ±5V to ±12V, unless otherwise noted.
DIFFERENTIAL DIFFERENTIAL
V
S
A
V
R
L
R
F
R
G
GAIN PHASE
±12 2 1000 1000 1000 0.02% 0.02°
±12 2 150 1000 1000 0.03% 0.04°
±5 2 1000 1000 1000 0.02% 0.08°
±5 2 150 1000 1000 0.01% 0.09°
NTSC VIDEO (Note 1)
Note 1: Differential Gain and Phase are measured using a Tektronix TSG
120 YC/NTSC signal generator and a Tektronix 1780R Video Measurement
Set. The resolution of this equipment is 0.1% and 0.1°. Ten identical
amplifier stages were cascaded giving an effective resolution of 0.01% and
0.01°.

LT1252CN8#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Video Amplifiers L Cost Video Amp
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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