Overview
The THS4521IDR is a very low-power, fully differential amplifier produced by Texas Instruments. It is part of the THS4521, THS4522, and THS4524 family of devices, which are designed for low-power data acquisition systems and high-density applications where power dissipation is critical. This amplifier features rail-to-rail output and an input common-mode range that includes the negative rail, making it ideal for interfacing with single-ended, ground-referenced signal sources. It is particularly suited for driving both successive-approximation register (SAR) and delta-sigma (ΔΣ) analog-to-digital converters (ADCs) using a single +2.5V to +5V power supply.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D)-8 |
| Operating Temperature Range (°C) | -40 to 85 |
| Bandwidth (MHz) | 145 (Av = 1 V/V) |
| Slew Rate (V/µs) | 490 |
| HD2 (dBc) at 10 kHz | 133 (1 V RMS, RL = 1 kΩ) |
| HD3 (dBc) at 10 kHz | 141 (1 V RMS, RL = 1 kΩ) |
| Input Voltage Noise (nV/√Hz) | 4.6 (f = 100 kHz) |
| THD+N (dBc) | 112 (0.00025%) at 1 kHz (22-kHz BW, G = 1, 5 V PP) |
| Open-Loop Gain (dB) | 119 (DC) |
| Power Supply Voltage (V) | +2.5 V (±1.25 V) to +5.5 V (±2.75 V) |
| Supply Current per Channel (mA) | 1.14 |
| Power-Down Current (µA) | 20 (typical) |
Key Features
- Fully Differential Architecture
- Rail-to-Rail Output
- Negative Rail Input
- Output Common-Mode Control with Low Offset
- Low Power Consumption
- High Bandwidth and Slew Rate
- Low Harmonic Distortion (HD2 and HD3)
- Low Input Voltage Noise
- Power-Down Capability
Applications
The THS4521IDR is designed for various applications, including:
- Low-power data acquisition systems
- High-density applications where power dissipation is critical
- Audio applications requiring high performance and low distortion
- Driving successive-approximation register (SAR) and delta-sigma (ΔΣ) analog-to-digital converters (ADCs)
- Interfacing with single-ended, ground-referenced signal sources
Q & A
- What is the package type of the THS4521IDR?
The THS4521IDR is packaged in an 8-pin SOIC (D) package.
- What is the operating temperature range of the THS4521IDR?
The operating temperature range is from -40°C to 85°C.
- What is the bandwidth of the THS4521IDR?
The bandwidth is 145 MHz at a gain of 1 V/V.
- What is the slew rate of the THS4521IDR?
The slew rate is 490 V/µs.
- What is the input voltage noise of the THS4521IDR?
The input voltage noise is 4.6 nV/√Hz at 100 kHz.
- What is the power supply voltage range for the THS4521IDR?
The power supply voltage range is from +2.5 V (±1.25 V) to +5.5 V (±2.75 V).
- What is the typical supply current per channel for the THS4521IDR?
The typical supply current per channel is 1.14 mA.
- Does the THS4521IDR have power-down capability?
- What types of ADCs can the THS4521IDR drive?
The THS4521IDR can drive both successive-approximation register (SAR) and delta-sigma (ΔΣ) analog-to-digital converters (ADCs).
- Is the THS4521IDR suitable for audio applications?
