Overview
The THS4552, produced by Texas Instruments, is a dual-channel, low-noise, precision, 150-MHz fully differential amplifier. This device is designed to provide an easy interface from single-ended sources to the differential output required by high-precision analog-to-digital converters (ADCs). It is optimized for exceptional DC accuracy, low noise, and robust capacitive load driving, making it ideal for data acquisition systems where high precision and the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) are required.
The THS4552 supports a wide range of applications, including 16- to 20-bit successive-approximation register (SAR) ADCs, differential active filters, and differential transimpedance amplifiers. It is characterized for operation over a wide temperature range of –40°C to +125°C and is available in 16-pin TSSOP and 24-pin VQFN packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Bandwidth (G = 1 V/V) | 150 | MHz | ||
| Differential Output Slew Rate | 220 | V/µs | ||
| Gain Bandwidth Product | 135 | MHz | ||
| Input Noise | 3.3 | nV/√Hz | ||
| Total Harmonic Distortion (THD) at 10 kHz | –138 | dBc | ||
| Supply Voltage | 2.7 | 5 | 5.4 | V |
| Quiescent Current per Channel | 1.24 | 1.31 | 1.40 | mA |
| Operating Temperature Range | –40 | 125 | °C | |
| Common-Mode Rejection Ratio (CMRR) | 90 | 110 | dB | |
| Power-Supply Rejection Ratio (PSRR) | 90 | 105 | dB |
Key Features
- High bandwidth of 150 MHz (G = 1 V/V) and gain bandwidth product of 135 MHz.
- Low input noise of 3.3 nV/√Hz and total harmonic distortion (THD) of –138 dBc at 10 kHz.
- Negative rail input (NRI) capability for interfacing DC-coupled, ground-centered source signals to single-supply differential input ADCs.
- Low DC error and drift terms, supporting 16- to 20-bit SAR ADC input requirements.
- Wide-range output common-mode control supporting ADCs running from 1.8 V to 5 V supplies.
- Robust capacitive load driving and high common-mode rejection ratio (CMRR) of up to 110 dB.
- Power-down feature with low quiescent current in power-down mode.
- Available in 16-pin TSSOP and 24-pin VQFN packages.
Applications
- Data acquisition systems requiring high precision and low noise.
- 16- to 20-bit successive-approximation register (SAR) ADCs.
- Differential active filters.
- Differential transimpedance amplifiers.
- High-speed SAR drivers.
- Interface to high-precision analog-to-digital converters (ADCs) such as the ADS1278, ADS8694, ADC3221, and ADC3241.
Q & A
- What is the bandwidth of the THS4552 amplifier?
The bandwidth of the THS4552 amplifier is 150 MHz at a gain of 1 V/V.
- What is the input noise of the THS4552?
The input noise of the THS4552 is 3.3 nV/√Hz.
- What is the total harmonic distortion (THD) of the THS4552 at 10 kHz?
The THD of the THS4552 at 10 kHz is –138 dBc.
- Does the THS4552 support negative rail input?
Yes, the THS4552 supports negative rail input (NRI) for interfacing DC-coupled, ground-centered source signals to single-supply differential input ADCs.
- What is the common-mode rejection ratio (CMRR) of the THS4552?
The CMRR of the THS4552 is up to 110 dB.
- What are the available package options for the THS4552?
The THS4552 is available in 16-pin TSSOP and 24-pin VQFN packages.
- What is the operating temperature range of the THS4552?
The operating temperature range of the THS4552 is –40°C to +125°C.
- Does the THS4552 have a power-down feature?
Yes, the THS4552 has a power-down feature with low quiescent current in power-down mode.
- What types of ADCs can the THS4552 interface with?
The THS4552 can interface with high-precision ADCs such as 16- to 20-bit SAR ADCs, delta-sigma ADCs, and pipeline ADCs.
- What is the supply voltage range for the THS4552?
The supply voltage range for the THS4552 is 2.7 V to 5.4 V.
