High Temperature, Very Low Power, Negative Rail Input, Rail-to-Rail Output, Differential Amp - THS4521-HT

THS4521-HT (ACTIVE)

High Temperature, Very Low Power, Negative Rail Input, Rail-to-Rail Output, Differential Amp

 

Special note

The THS4521EVM (Evaluation Module) can be used to evaluate the functionality of the THS4521-HT.

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.

Features

  • Fully Differential Architecture
  • Bandwidth: 40.7 MHz (210°C)
  • Slew Rate: 353.5 V/µs (210°C)
  • HD2: –96 dBc at 1 kHz
    (1 VRMS, RL = 1 kΩ) (210°C)
  • HD3: –91.5 dBc at 1 kHz
    (1 VRMS, RL = 1 kΩ) (210°C)
  • Input Voltage Noise: 19.95 nV/√Hz (f = 100 kHz)
  • Open-Loop Gain: 90 dB (typ) (210°C)
  • NRI—Negative Rail Input
  • RRO—Rail-to-Rail Output
  • Output Common-Mode Control (with Low Offset and Drift)
  • Power Supply:
    • Voltage: 2.5 V (±1.25 V) to 3.3 V (±1.65 V)
    • Current: 1.4 mA/ch (3.3 V)
  • Power-Down Capability: 10 µA (typ) (210°C)

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Parametrics Compare all products in Operational Amplifiers

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Rail-to-Rail
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Typ) (mA)
Rating
Operating Temperature Range (C)
Package Group
Output Current (Typ) (mA)
Offset Drift (Typ) (uV/C)
Vn at 1kHz (Typ) (nV/rtHz)
Architecture
Additional Features
IIB (Max) (pA)
CMRR (Typ) (dB)
Package Size: mm2:W x L (PKG)
THS4521-HT
1   
2.5   
3.6   
22   
39   
In to V-
Out   
11.5   
1.1   
Catalog   
-55 to 175
-55 to 210   
CFP
SOIC   
33   
2   
5.2   
Fully Differential
Voltage FB   
Shutdown   
4500000   
105   
See datasheet (CFP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   

Other qualified versions of THS4521-HT

Version Part Number Definition
Catalog THS4521 TI's standard catalog product