ADS8331IPW

IC ADC 16BIT SAR 24TSSOP

1 Features

• Low-Power, Flexible Supply Range:

– 2.7-V to 5.5-V Analog Supply

– 8.7 mW (250 kSPS in Auto-NAP Mode, VA = 2.7 V, VBD = 1.65 V)

– 14.2 mW (500 kSPS, VA = 2.7 V, VBD = 1.65 V)

• Up to 500-kSPS Sampling Rate

• Excellent DC Performance:

– ±1.2 LSB Typical, ±2 LSB Maximum INL at 2.7 V

– ±0.6 LSB Typical, –1, 1.5 LSB Maximum DNL at 2.7 V

– 16-Bit NMC Over Temperature

• Excellent AC Performance at 5 V, fIN = 1 kHz:

– 91.5-dB SNR, 101-dB SFDR,

–100-dB THD

• Flexible Analog Input Arrangement:

– On-Chip 4-, 8-Channel Mux With Breakout

– Auto, Manual Channel Select and Trigger

• Other Hardware Features:

– On-Chip Conversion Clock (CCLK)

– Software, Hardware Reset

– Programmable Status, Polarity EOC/INT

– Daisy-Chain Mode

– Global CONVST (Independent of CS)

– Deep, Nap, and Auto-NAP Powerdown Modes

– SPI™, DSP Compatible Serial Interface

– Separate I/O Supply: 1.65 V to VA

– SCLK up to 40 MHz (VA = VBD = 5 V)

• 24-Pin 4-mm × 4-mm VQFN and 24-Pin TSSOP Packages

2 Applications

• Communications

• Transducer Interfaces

• Medical Instruments

• Magnetometers

• Industrial Process Controls

• Data Acquisition Systems

• Automatic Test Equipment

3 Description

The ADS8331 is a low-power, 16-bit, 500-k samplesper-second (SPS) analog-to-digital converter (ADC) with a unipolar, 4-to-1 multiplexer (mux) input. The device includes a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold.

The ADS8332 is based on the same core and includes a unipolar 8-to-1 input mux. Both devices offer a high-speed, wide-voltage serial interface and are capable of daisy-chain operation when multiple converters are used.These converters are available in 24-pin, 4 × 4 VQFN and 24-pin TSSOP packages and are fully specified for operation over the industrial –40°C to 85°C temperature range.