Overview
The THS4521IDGKR, produced by Texas Instruments, is a very low-power, fully differential amplifier with rail-to-rail output and negative rail input. This device is part of the THS452x family, which includes single, dual, and quad FDA versions. It is designed for low-power data acquisition systems and high-density applications where power dissipation is critical. The THS4521 operates over the full industrial temperature range from –40°C to +85°C, making it suitable for a wide range of environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bandwidth (AV = 1 V/V) | 145 | MHz |
| Slew Rate | 490 | V/μs |
| HD2 at 10 kHz (1 VRMS, RL = 1 kΩ) | –133 | dBc |
| HD3 at 10 kHz (1 VRMS, RL = 1 kΩ) | –141 | dBc |
| Input Voltage Noise at 100 kHz | 4.6 | nV/√Hz |
| THD+N at 1 kHz (22-kHz BW, G = 1, 5 VPP) | –112 | dBc |
| Open-Loop Gain (DC) | 119 | dB |
| Power Supply Voltage | +2.5 V to +5.5 V (±1.25 V to ±2.75 V) | V |
| Quiescent Current per Channel | 1.14 | mA |
| Power-Down Current | 20 | μA (typical) |
| Package Type | VSSOP (8-pin) | |
| Package Size | 3.00 mm × 3.00 mm |
Key Features
- Fully differential architecture
- Rail-to-rail output and negative rail input
- Low power consumption with quiescent current of 1.14 mA per channel
- High bandwidth of 145 MHz and slew rate of 490 V/μs
- Low harmonic distortion (HD2 and HD3) and total harmonic distortion plus noise (THD+N)
- Output common-mode control with low offset
- Power-down capability with a typical current of 20 μA
Applications
- Low-power SAR and ΔΣ ADC drivers
- Low-power differential drivers
- Low-power differential signal conditioning
- Low-power, high-performance differential audio amplifiers
Q & A
- What is the bandwidth of the THS4521IDGKR?
The bandwidth of the THS4521IDGKR is 145 MHz at a gain of 1 V/V. - What is the slew rate of the THS4521IDGKR?
The slew rate of the THS4521IDGKR is 490 V/μs. - What is the input voltage noise of the THS4521IDGKR at 100 kHz?
The input voltage noise of the THS4521IDGKR at 100 kHz is 4.6 nV/√Hz. - What are the power supply voltage ranges for the THS4521IDGKR?
The power supply voltage ranges for the THS4521IDGKR are +2.5 V to +5.5 V (±1.25 V to ±2.75 V). - What is the quiescent current per channel for the THS4521IDGKR?
The quiescent current per channel for the THS4521IDGKR is 1.14 mA. - What is the typical power-down current for the THS4521IDGKR?
The typical power-down current for the THS4521IDGKR is 20 μA. - In what temperature range does the THS4521IDGKR operate?
The THS4521IDGKR operates over the full industrial temperature range from –40°C to +85°C. - What are some common applications of the THS4521IDGKR?
The THS4521IDGKR 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. - What package types are available for the THS4521IDGKR?
The THS4521IDGKR is available in an 8-pin VSSOP package. - What is the size of the VSSOP package for the THS4521IDGKR?
The size of the VSSOP package for the THS4521IDGKR is 3.00 mm × 3.00 mm.
