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ADS9813 Datasheet(PDF) 1 Page - Texas Instruments |
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ADS9813 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 66 page  ADS9813 18-Bit, 2MSPS, 8-Channel, Simultaneous-Sampling ADC With Integrated Analog Front-End 1 Features • 8-channel, 18-bit ADC with analog front-end: – Simultaneous sampling – Constant 1MΩ input impedance front-end • Programmable analog input ranges: – ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V – Single-ended and differential inputs – Common-mode voltage range: ±12V – Input overvoltage protection: Up to ±18V • User-selectable analog input bandwidth: – 22.7kHz and 700kHz • Integrated low-drift precision references: – ADC reference: 4.096V – 2.5V reference output for external circuits • Excellent AC and DC performance at full- throughput: – DNL: ±0.35LSB, INL: ±0.8LSB – SNR: 90.3dBFS, THD: –113dB • Power supply: – Analog and digital: 5V and 1.8V – Digital interface: 1.2V to 1.8V • Temperature range: –40°C to +125°C 2 Applications • Semiconductor test • Programmable DC power supplies • Parametric measurement units (PMU) 3 Description The ADS9813 is an eight-channel data acquisition (DAQ) system based on a simultaneous sampling, 18- bit successive approximation register (SAR) analog- to-digital converter (ADC). The ADS9813 features a complete analog front-end (AFE) for each channel with an input clamp. The device also features a 1MΩ input impedance and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. Configure the ADS9813 to accept ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V bipolar inputs with up to ±12V input common-mode voltage. A digital interface supporting 1.2V to 1.8V operation enables the ADS9813 to be used without external voltage level translators. Package Information PART NUMBER PACKAGE(1) PACKAGE SIZE(2) ADS9813, ADS9811, ADS9810 RSH (VQFN, 56) 7mm × 7mm (1) For more information, see the Mechanical, Packaging, and Orderable Information. (2) The package size (length × width) is a nominal value and includes pins, where applicable. Device Information PART NUMBER SPEED TOTAL POWER ADS9813 2MSPS/channel 244mW ADS9811, ADS9810 1MSPS/channel 177mW AIN1P 8 CHANNELS 4.096 V AIN1M 1 M Clamp 1 M Clamp User- selectable LPF PGA AIN8P AIN8M ADC REFIO ADC Reference Data Interface User Registers DCLKOUT FCLKOUT D0 D1 D2 D3 CS SCLK SDI / EXTREF SDO AVDD_5V = 4.75 V to 5.25 V VDD_1V8 = 1.75 V to 1.85 V IOVDD = 1.15 V to 1.85 V 2.5 V REFOUT_2V5 Bipolar Differential Unipolar Differential with wide input common-mode voltage Dynamic Input Signal Support AINxP and AINxM PGA Optimum SNR for multiple ranges +12V +10V +7V +5V +3.5V +2.5V –12V –10V –7V –5V –3.5V –2.5V Multiple analog input ranges Device Block Diagram ADS9813, ADS9811, ADS9810 SBASAQ6A – JULY 2024 – REVISED NOVEMBER 2024 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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