THS4520 Datasheet, PDF (1/23 Pages) Texas Instruments – WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER WITH RAIL-TO-RAIL OUTPUTS

THS4520
www.ti.com
SLOS503A – SEPTEMBER 2006 – REVISED OCTOBER 2006
WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER
WITH RAIL-TO-RAIL OUTPUTS
FEATURES
• Fully Differential Architecture With
Rail-to-Rail Outputs
• 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, V_OD = 8 V_PP
• HD₃: –123 dBc at 100 kHz, V_OD = 8 V_PP
• Input Voltage Noise: 2 nV/√Hz (f >10 kHz)
• Output Common-Mode Control
• Power Supply:
– Voltage: 3.3 V (±1.5 V) to 5 V (±2.5 V)
– Current: 14.2 mA
• Power-Down Capability: 15 µA
APPLICATIONS
• 5-V and 3.3-V Data Acquisition Systems
• High Linearity ADC Amplifier
• Wireless Communication
• Test and Measurement
• Voice Processing Systems
RELATED PRODUCTS
Device
THS4509
THS4500
THS4130
BW
(MHZ)
2000
370
150
Slew Rate
(V/µsec)
6600
2800
52
THD
(dBc)
-102 at 10 MHz
-82 at 8 MHz
-97 at 250 kHz
V_N
(nV/Hz)
1.9
7
1.3
DESCRIPTION
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 V_PP, 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.
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.
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.
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
From
50 W
Source
487 W
53.6 W
499 W
2.5 V
0.22 mF
49.9 W
487 W
THS4520
53.6 W
CM
−2.5 V
499 W
487 W
1:1
487 W ^{56.3 W}
V_OUT
To 50 W
Test
Equipment
Open
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