• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

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) anddelta-sigma (Δσ) ADCs using only a single 2.

特性

• Fully Differential Architecture
• Bandwidth: 40.7 MHz (210°C)
• Slew Rate: 353.5 V/µs (210°C)
• HD₂: –96 dBc at 1 kHz
  (1 V_RMS, R_L = 1 kΩ) (210°C)
• HD₃: –91.5 dBc at 1 kHz
  (1 V_RMS, R_L = 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)
• APPLICATIONS
  • Down-Hole Drilling
  • High Temperature Environments
• SUPPORTS EXTREME TEMPERATURE APPLICATIONS
  • Controlled Baseline
  • One Assembly/Test Site