Overview
The THS4522IPWR, produced by Texas Instruments, is a very low-power, dual-channel, rail-to-rail output, fully differential amplifier. This device is part of the THS4521, THS4522, and THS4524 family, which are designed for low-power data acquisition systems and high-density applications where power dissipation is critical. The THS4522 is particularly suited for driving both successive-approximation register (SAR) and delta-sigma (ΔΣ) analog-to-digital converters (ADCs) using a single power supply ranging from +2.5V to +5V and ground.
The amplifier features a fully differential architecture, negative rail input, and rail-to-rail output, making it ideal for interfacing between single-ended, ground-referenced signal sources and differential signal paths. It operates over the full industrial temperature range from –40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bandwidth | 145 MHz | (AV = 1 V/V) |
| Slew Rate | 490 V/μs | |
| HD2 | –133 dBc | (at 10 kHz, 1 V RMS, RL = 1 kΩ) |
| HD3 | –141 dBc | (at 10 kHz, 1 V RMS, RL = 1 kΩ) |
| Input Voltage Noise | 4.6 nV/√Hz | (f = 100 kHz) |
| THD+N | –112 dBc (0.00025%) | (at 1 kHz, 22-kHz BW, G = 1, 5 V PP) |
| Open-Loop Gain | 119 dB | (DC) |
| Power Supply Voltage | +2.5 V (±1.25 V) to +5.5 V (±2.75 V) | |
| Power Supply Current | 1.14 mA/ch | |
| Power-Down Capability | 20 μA (typical) |
Key Features
- Fully Differential Architecture
- Negative Rail Input (NRI)
- Rail-to-Rail Output (RRO)
- Output Common-Mode Control with Low Offset
- Accurate output common-mode control for dc-coupling with ADCs
- Ideal for driving SAR and ΔΣ ADCs with a single +2.5V to +5V power supply
- Low power consumption, making it suitable for high-density applications
- Operates over the full industrial temperature range from –40°C to +85°C
Applications
- Low-Power SAR and ΔΣ ADC Drivers
- Low-Power Differential Drivers
- Low-Power Differential Signal Conditioning
- Low-Power, High-Performance Differential Audio Amplifiers
- Data Acquisition Systems
- High-Density Applications where power dissipation is critical
Q & A
- What is the bandwidth of the THS4522IPWR?
The bandwidth of the THS4522IPWR is 145 MHz (AV = 1 V/V).
- What is the slew rate of the THS4522IPWR?
The slew rate of the THS4522IPWR is 490 V/μs.
- What is the input voltage noise of the THS4522IPWR?
The input voltage noise of the THS4522IPWR is 4.6 nV/√Hz at 100 kHz.
- What is the THD+N of the THS4522IPWR?
The THD+N of the THS4522IPWR is –112 dBc (0.00025%) at 1 kHz with a 22-kHz bandwidth, gain of 1, and 5 V PP.
- What is the power supply voltage range for the THS4522IPWR?
The power supply voltage range for the THS4522IPWR is +2.5 V (±1.25 V) to +5.5 V (±2.75 V).
- What is the typical power consumption per channel of the THS4522IPWR?
The typical power consumption per channel of the THS4522IPWR is 1.14 mA.
- What is the power-down current of the THS4522IPWR?
The power-down current of the THS4522IPWR is 20 μA (typical).
- What temperature range does the THS4522IPWR operate over?
The THS4522IPWR operates over the full industrial temperature range from –40°C to +85°C.
- What types of ADCs is the THS4522IPWR suited for driving?
The THS4522IPWR is ideally suited for driving both successive-approximation register (SAR) and delta-sigma (ΔΣ) ADCs.
- What are some common applications of the THS4522IPWR?
The THS4522IPWR is commonly used in low-power SAR and ΔΣ ADC drivers, low-power differential drivers, low-power differential signal conditioning, and low-power, high-performance differential audio amplifiers.
