THS4520
www.ti.com
SLOS503A–SEPTEMBER 2006–REVISED OCTOBER 2006
WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER
WITH RAIL-TO-RAIL OUTPUTS
FEATURES
DESCRIPTION
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Fully Differential Architecture With
Rail-to-Rail Outputs
The THS4520 is
a wideband, fully differential
operational amplifier designed for 5-V data
acquisition systems. It has very low noise at
2 nV/√Hz, and low harmonic distortion of –115 dBc
HD2 and –123 dBc HD3 at 100 kHz with 8 VPP, and
1-kΩ load. The slew rate is 570 V/µs, and with a
settling time of 7 ns to 0.1% (2-V step), it is ideal for
data acquisition applications. It is designed for unity
gain stability.
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Centered Input Common-mode Range
Minimum Gain of 1 V/V (0 dB)
Bandwidth: 620 MHz
Slew Rate: 570 V/µs
0.1% Settling Time: 7 ns
HD2: –115 dBc at 100 kHz, VOD = 8 VPP
HD3: –123 dBc at 100 kHz, VOD = 8 VPP
Input Voltage Noise: 2 nV/√Hz (f >10 kHz)
Output Common-Mode Control
Power Supply:
To allow for dc coupling to ADCs, its unique output
common-mode control circuit maintains the output
common-mode voltage within 0.25 mV offset (typical)
from the set voltage. The common-mode set point
defaults to mid-supply by internal circuitry, which
may be over-driven from an external source.
– Voltage: 3.3 V (±1.5 V) to 5 V (±2.5 V)
– Current: 14.2 mA
The input and output are optimized for best
performance with their common-mode voltages set to
mid-supply. Along with high performance at low
power supply voltage, this makes for extremely high
performance single supply 5-V and 3.3-V data
acquisition systems.
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Power-Down Capability: 15 µA
APPLICATIONS
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5-V and 3.3-V Data Acquisition Systems
High Linearity ADC Amplifier
Wireless Communication
Test and Measurement
Voice Processing Systems
The THS4520 is offered in a Quad 16-pin leadless
QFN package (RGT), and is characterized for
operation over the full industrial temperature range
from –40°C to 85°C.
V
IN
487 W
499 W
2.5 V
From
50 W
Source
RELATED PRODUCTS
53.6 W
BW
Slew Rate
THD
(dBc)
VN
(nV/Hz)
V
OUT
487 W
487 W
Device
1:1
(MHZ)
(V/µsec)
To 50 W
Test
Equipment
56.3 W
THS4520
487 W
THS4509 2000
6600
2800
52
-102 at 10 MHz
-82 at 8 MHz
1.9
7
THS4500
THS4130
370
150
0.22 mF
49.9 W
CM
53.6 W
Open
-97 at 250 kHz
1.3
−2.5 V
499 W
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated