TL026C
DIFFERENTIAL HIGH-FREQUENCY AMPLIFIER WITH AGC
SLFS007A – JUNE 1985 – REVISED JULY 1990
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Low Output Common-Mode Sensitivity to
AGC Voltages
D
Input and Output Impedances Independent
of AGC Voltage
D
Peak Gain . . . 38 dB Typ
D
Wide AGC Range . . . 50 dB Typ
D
3-dB Bandwidth . . . 50 MHz
D
Other Characteristics Similar to NE592 and
uA733
description
This device is a monolithic two-stage high-
frequency amplifier with differential inputs and
outputs.
Internal feedback provides wide bandwidth, low phase distortion, and excellent gain stability. Variable gain
based on signal summation provides large AGC control over a wide bandwidth with low harmonic distortion.
Emitter-follower outputs enable the device to drive capacitive loads. All stages are current-source biased to
obtain high common-mode and supply-voltage rejection ratios. The gain may be electronically attenuated by
applying a control voltage to the AGC pin. No external compensation components are required.
This device is particularly useful in TV and radio IF and RF AGC circuits, as well as magnetic-tape and disk-file
systems where AGC is needed. Other applications include video and pulse amplifiers where a large AGC range,
wide bandwidth, low phase shift, and excellent gain stability are required.
The TL026C is characterized for operation from 0°C to 70°C.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC+
(see Note 1) 8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage, V
CC–
(see Note 1) – 8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage ±5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common-mode input voltage ±6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current ±10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range – 65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature range 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. This is a stress rating only, and
functional operation of the device at these or any other conditions beyond those indicated in the recommended operating conditions section of
this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltages are with respect to the midpoint of V
CC+
and V
CC–
except differential input and output voltages.
DISSIPATION RATING TABLE
PACKAGE
T
A
≤ 25°C
POWER RATING
OPERATING FACTOR
ABOVE T
A
= 25°C
T
A
= 70°C
POWER RATING
D 725 mW 5.8 mW/°C 464 mW
P 1000 mW 8.0 mW/°C 640 mW
Copyright 1990, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
IN–
REF OUT
V
CC
+
OUT–
1
2
3
4
8
7
6
5
IN+
AGC
V
CC
OUT+
D OR P PACKAGE
(TOP VIEW)
symbol
+
–
AGC
IN +
IN –
7
4
5
2
1
8
REF OUT
OUT+
OUT–
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