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ADS8694

Part Number	ADS8694
Manufacturer	Texas Instruments
Description	SAR ADC
Published	Dec 16, 2019
Detailed Description	Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design ADS8694, ADS...
Datasheet	ADS8694 PDF File

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design ADS8694, ADS8698 SBAS686 – JULY 2015 ADS869x 18-Bit, 500-kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs with Bipolar Input Ranges Additional Channels in ADS8698 Multiplexer Gain (%FS) 1 Features •1 18-Bit ADCs with Integrated Analog Front-End • 4-, 8-Channel MUX with Auto and Manual Scan • Channel-Independent Programmable Inputs: – ±10.
24 V, ±5.
12 V, ±2.
56 V – 10.
24 V, 5.
12 V • 5-V Analog Supply: 1.
65-V to 5-V I/O Supply • Constant Resistive Input Impedance: 1 MΩ • Input Overvoltage Protection: Up to ±20 V • On-Chip, 4.
096-V Reference with Low Drift • Excellent Performance: – 500-kSPS Aggregate Throughput – DNL: ±0.
5 LSB; INL: ±1.
5 LSB – Low Drift for Gain Error and Offset – SNR: 93.
5 dB; THD: –105 dB – Low Power: 65 mW • AUX Input → Direct Connection to ADC Inputs • ALARM → High and Low Thresholds per Channel • SPI™-Compatible Interface with Daisy-Chain • Industrial Temperature Range: –40°C to 125°C • TSSOP-38 Package (9.
7 mm × 4.
4 mm) Block Diagram AVDD DVDD 1 M: AIN_0P OVP AIN_0GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB0 1 M: AIN_1P OVP AIN_1GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB1 1 M: AIN_2P OVP AIN_2GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB2 1 M: AIN_3P OVP AIN_3GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB3 1 M: AIN_4P OVP AIN_4GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB4 1 M: AIN_5P OVP AIN_5GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB5 1 M: AIN_6P OVP AIN_6GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB6 1 M: AIN_7P OVP AIN_7GND OVP 1 M: PGA 2nd-Order LPF ADC Driver VB7 AUX_IN AUX_GND Internal ADC Operating as 16-Bit ADC ADS8698 ADS8694 Digital Logic and Interface CS SCLK SDI 18-Bit SAR ADC SDO DAISY Oscillator REFSEL RST / PD ALARM REFCAP REFIO 4.
096-V Reference AGND DGND REFGND 1 2 Applications • Power Automation • Protection Relays • PLC An...

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