Product
0
THS4521-HT
  • THS4521-HT
  • THS4521-HT
  • THS4521-HT

THS4521-HT

ACTIVE

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

Texas Instruments THS4521-HT Product Info

1 April 2026 4

Parameters

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

2.5

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

3.6

BW at Acl (MHz)

104

Acl, min spec gain (V/V)

1

Slew rate (typ) (V/µs)

377.5

Architecture

Bipolar, Fully Differential ADC Driver

Vn at flatband (typ) (nV√Hz)

4.6

Iq per channel (typ) (mA)

1.1

Rail-to-rail

In to V-, Out

Vos (offset voltage at 25°C) (max) (mV)

5

Operating temperature range (°C)

-55 to 210

Iout (typ) (mA)

35

2nd harmonic (dBc)

96

3rd harmonic (dBc)

91.5

Frequency of harmonic distortion measurement (MHz)

0.001

GBW (typ) (MHz)

81

Input bias current (max) (pA)

3300000

Features

Shutdown

CMRR (typ) (dB)

105

Rating

High Temp

Package

CFP (HKJ)-8-38.985 mm² 6.9 x 5.65

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)
  • 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)

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.

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