SGM51652H8

16-Bit, 500kSPS, 4- and 8-Channel, Single Supply, SAR ADC with Bipolar Input Ranges

GENERAL DESCRIPTION The SGM51652H4 and SGM51652H8 are 4-channel and 8-channel, 16-bit resolution, high-precision successive approximation (SAR) analog-to-digital converters (ADCs). These ADCs are powered by a single unipolar 5V, and support true bipolar ±10.24V, ±5.12V, and ±2.56V inputs, as well as unipolar input ranges of 0V to 10.24V and 0V to 5.12V. The input range is configured by software. These chips provide over-voltage protection up to ±20V at the input. These chips have an on-chip high accuracy and low drift 10ppm reference. The input impedance of these chips is ~1MΩ and it is independent of input range selection. The digital interface is compatible to the traditional SPI protocol. FEATURES ● Supported Input Ranges: ? Bipolar Single-Ended Ranges: ±10.24V, ±5.12V, and ±2.56V ? Unipolar Single-Ended Ranges: 0V to 10.24V and 0V to 5.12V ? Bipolar Differential Ranges: ±10.24V, ±5.12V, and ±2.56V ● Supply Voltage Ranges: ? Analog Supply: 5V ? I/O Supply: 1.65V to 5V ● On-Chip Reference: 4.096V ● Differential Nonlinearity (DNL): -0.6/+0.9LSB (TYP) ● Integral Nonlinearity (INL): ±1.3LSB (TYP) ● Signal-to-Noise Ratio (SNR): 89.5dB (TYP) ● Total Harmonic Distortion (THD): -99dB (TYP) ● Alarm Features ● Daisy-Chain Operation ● -40℃ to +125℃ Operating Temperature Range ● Available in a Green TSSOP-38 Package APPLICATIONS Power Automation Protection Relays PLC Analog Input Modules Factory Automation

SGM51652 PIN TO PIN REPLACE 替代 TI 的 ADS8688

其中兩者的主要差異是

• 具有集成模擬前端的 16 位 ADC
• 支持自動和手動兩種掃描模式的 4 通道和 8 通道多路復用器 (MUX)
• 獨立于通道的可編程輸入范圍：
  • 雙極：±10.24V、±5.12V 和 ±2.56V
  • 單極：0V 到 10.24V 和 0V 到 5.12V
• 5V 模擬電源：1.65V 到 5V I/O 電源
• 恒定的阻性輸入阻抗：1MΩ    一樣
• 輸入過壓保護：高達 ±20V     一樣
• 低漂移的片上 4.096V 基準電壓
• 出色的性能：
  • 500kSPS 的總吞吐量
  • 差分非線性 (DNL)：±0.5 最低有效位 (LSB)；最大積分非線性 (INL)：±0.75 LSB
  • 增益誤差和偏移誤差低漂移

  • 信噪比 (SNR)：92dB；  SGM52651 是89.5DB，  約為低一些
    

  • 總諧波失真 (THD)：–102dB  SGM52652 是-99DB, 約為差一些

  • 低功耗：65mW   功耗相差不大
• AUX 輸入 → 直接連接到 ADC 輸入
• SPI- 兼容接口，支持菊花鏈連接
• 工業溫度范圍：-40°C 至 125°C   工作溫度兩者一樣
• TSSOP-38 封裝 (9.7mm × 4.4mm)  封裝管腳一樣PIN TO PIN 兼容

Power Automation Protection Relays PLC Analog Input Modules Factory Automation