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THS4521-HT Datasheet(PDF) 1 Page - Texas Instruments

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Part # THS4521-HT
Description  VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

THS4521-HT Datasheet(HTML) 1 Page - Texas Instruments

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THS4521-HT
www.ti.com
SBOS548D – APRIL 2011 – REVISED MAY 2012
VERY LOW POWER, NEGATIVE RAIL INPUT,
RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER
Check for Samples: THS4521-HT
1
FEATURES
Fully Differential Architecture
APPLICATIONS
Bandwidth: 40.7 MHz (210°C)
Down-Hole Drilling
Slew Rate: 353.5 V/
μs (210°C)
High Temperature Environments
HD2: –96 dBc at 1 kHz
SUPPORTS EXTREME TEMPERATURE
(1 VRMS, RL = 1 kΩ) (210°C)
APPLICATIONS
HD3: –91.5 dBc at 1 kHz
(1 VRMS, RL = 1 kΩ) (210°C)
Controlled Baseline
Input Voltage Noise: 19.95 nV/
√Hz (f = 100 kHz)
One Assembly/Test Site
Open-Loop Gain: 90 dB (typ) (210°C)
One Fabrication Site
NRI—Negative Rail Input
Available in Extreme (–55°C/210°C)
Temperature Range(1)
RRO—Rail-to-Rail Output
Extended Product Life Cycle
Output Common-Mode Control (with Low
Offset and Drift)
Extended Product-Change Notification
Power Supply:
Product Traceability
Voltage: 2.5 V (±1.25 V) to 3.3 V (±1.65 V)
Texas Instruments high temperature products
utilize highly optimized silicon (die) solutions
Current: 1.4 mA/ch (3.3 V)
with design and process enhancements to
Power-Down Capability: 10 µA (typ) (210°C)
maximize performance over extended
temperatures.
(1)
Custom temperature ranges available
DESCRIPTION
The THS4521 is a very low-power, fully differential op amp with rail-to-rail output and an input common-mode
range that includes the negative rail. This amplifier is designed for low-power data acquisition systems and high-
density applications where power dissipation is a critical parameter, and provides exceptional performance in
audio applications.
The THS4521 features accurate output common-mode control that allows for dc-coupling when driving analog-to-
digital converters (ADCs). This control, coupled with an input common-mode range below the negative rail as
well as rail-to-rail output, allows for easy interfacing between single-ended, ground-referenced signal sources.
Additionally, this device is ideally suited for driving both successive-approximation register (SAR) and delta-
sigma (
ΔΣ) ADCs using only a single 2.5-V to 3.3-V and ground power supply.
The THS4521 is characterized for operation from –55°C to 210°C.
1
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.
Copyright © 2011–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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