THS7530 Datasheet, PDF (1/19 Pages) Texas Instruments – HIGH-SPEED, FULLY DIFFERENTIAL, CONTINUOUSLY VARIABLE GAIN AMPLIFIER

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THS7530
SLOS405A - DECEMBER 2002– REVISED APRIL 2003
HIGHĆSPEED, FULLY DIFFERENTIAL, CONTINUOUSLY
VARIABLE GAIN AMPLIFIER
FEATURES
D Low Noise: V_n = 1.1 nV/ Hz,
Noise Figure = 9 dB
D Low Distortion:
– HD₂ = –65 dBc, HD₃ = –61 dBc at 32 MHz
– IMD₃ = –62 dBc, OIP₃ = 21 dBm at 70 MHz
D 300 MHz Bandwidth
D Continuously Variable Gain Range: 11.6 dB to
46.5 dB
D Gain Slope: 38.8 dB/V
D Fully Differential Input and Output
D Output Common-Mode Voltage Control
D Output Voltage Limiting
APPLICATIONS
D Time Gain Amplifiers in Ultra Sound, Sonar,
and Radar
D Automatic Gain Control in Communication
and Video
D System Gain Calibration in Communications
D Variable Gain in Instrumentation
DESCRIPTION
The THS7530 is fabricated using Texas Instruments’
state-of-the-art BiCom III SiGe complementary bipolar
process. The THS7530 is a dc-coupled wide bandwidth
amplifier with voltage-controlled gain. The amplifier has
high impedance differential inputs and low impedance
differential outputs with high bandwidth gain control,
output common mode control, and output voltage
clamping.
Signal channel performance is exceptional with 300-MHz
bandwidth, and third harmonic distortion of –61 dBc at
32 MHz with 1 V_PP output into 400 Ω.
Gain control is linear in dB with 0 V to 0.9 V varying the gain
from 11.6 dB to 46.5 dB with 38.8-dB/V gain slope.
Output voltage limiting is provided to limit the output
voltage swing, and prevent saturating following stages.
The device is characterized for operation over the
industrial temperature range: –40°C to 85°C.
AGC APPLICATION
1 kΩ
1 kΩ
VS+ = 5 V
24.9 Ω
0.1 µF
VIN+
VIN–
0.1 µF
0.1 µF
24.9 Ω
VOCM
PD
0.1 µF
VCL+
VCL–
0.1 µF
33 pF
24.9 Ω
THS7530
VG–
24.9 Ω
VS– _VG+
33 pF
6.8 µF
0.1 µF
0.1 µF
VOUT+
VOUT–
AGC detect VREF
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
Copyright  2002 – 2003, Texas Instruments Incorporated