Texas Instruments ADS8588SIPM

Overview

ADS8588SIPM from Texas Instruments is a 16-bit, simultaneous-sampling SAR ADC with integrated analog front-end for 8-channel bipolar data acquisition. It delivers 200 kSPS per channel, ±0.35 LSB DNL, 96.4 dB SNR (with 16× oversampling), and supports ±10 V or ±5 V inputs on a single 5-V supply - used in protection relays and multichannel power grid monitoring systems.

For engineers reviewing the ADS8588SIPM datasheet, ADS8588SIPM pinout, ADS8588SIPM application, or ADS8588SIPM equivalent, key selection considerations include simultaneous 8-channel sampling accuracy, on-chip 2.5-V reference stability (7.5 ppm/°C drift), 1-MΩ input impedance enabling direct sensor interfacing, and flexible SER/PAR/byte interface compatibility with industrial host controllers.

Technical Context

The ADS8588SIPM implements a true simultaneous-sampling architecture across eight independent analog input channels, each featuring a 1-MΩ high-impedance input stage, third-order Butterworth low-pass filter, clamp circuitry, and dedicated PGA driver - all optimized for zero-latency conversion at full 200-kSPS throughput. Its internal 2.5-V reference includes buffer output (REFIN/REFOUT) and decoupled REFCAPA/REFCAPB pins to maintain 4.0-V ADC reference voltage stability.

Digital control is managed via dual CONVST inputs (CONVSTA/CONVSTB) for staggered half-channel triggering, OS[2:0] pins for 1×–64× oversampling configuration, and PAR/SER/BYTE SEL with RD/SCLK multiplexing to support parallel (16-bit DB[15:0]), serial, or byte-mode readout - all operating across –40°C to +125°C with guaranteed performance.

Key Specifications

Pinout & Package

ADS8588SIPM is housed in a 64-pin LQFP package (10.00 mm × 10.00 mm body size) with exposed thermal pad. Pin functions are validated per TI SBAS642A datasheet Rev. A (April 2017), including dedicated AGND/DGND separation, dual CONVST control, and multi-function DB[15:0]/DOUTA/DOUTB pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit simultaneous-sampling ADC applications.

Compared with ADS8586S, ADS8588SIPM adds two analog channels and tighter linearity, making it optimal for full-featured relays; versus AD7606C-16, it trades raw speed for integrated simplicity, lower EMI sensitivity, and reduced BOM cost in thermally stable industrial DAQ.

Availability

ADS8588SIPM is available at Aetrix Electronics and suitable for protection relays, power grid monitoring systems, and multichannel motor controls requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical deployments.

Supply support for ADS8588SIPM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade ICs.

The ADS8588SIPM belongs to TI's high-reliability precision SAR ADC product line, engineered specifically for demanding energy infrastructure applications where simultaneous sampling, bipolar input flexibility, and extended temperature operation are non-negotiable.

FAQ

What is the maximum sample rate per channel for the ADS8588SIPM?

The ADS8588SIPM achieves a maximum throughput rate of 200 kSPS per channel while maintaining simultaneous sampling across all eight analog inputs. This rate is guaranteed over the full operating temperature range (–40°C to +125°C) with AVDD = 4.75 V to 5.25 V and internal reference enabled. At this rate, the device delivers ±0.35 LSB DNL and 96.4 dB SNR with 16× oversampling - meeting stringent requirements for protection relay waveform capture and power quality analysis.

Does the ADS8588SIPM support both ±10 V and ±5 V input ranges?

Yes, the ADS8588SIPM supports pin-programmable bipolar input ranges of ±10 V or ±5 V via the RANGE input pin, provided the STBY pin is held high. This configuration is implemented entirely within the device's analog front-end and requires no external resistive dividers or level-shift circuitry. The input impedance remains 1 MΩ across both ranges, and full-scale performance specifications - including INL, DNL, and SNR - are guaranteed for either setting per TI SBAS642A datasheet Section 7.5.

How does the ADS8588SIPM handle reference voltage generation?

The ADS8588SIPM integrates a low-drift 2.5-V reference with 7.5 ppm/°C temperature coefficient and 25-ms turn-on time. When REFSEL = high, the internal reference is enabled and appears on the REFIN/REFOUT pin; REFCAPA and REFCAPB pins provide buffered 4.0-V reference voltage to the SAR core and must be shorted and decoupled to AGND with a 10-µF ceramic capacitor. Alternatively, an external 2.475–2.525-V reference may be applied to REFIN/REFOUT when REFSEL = low - supporting systems requiring ultra-low-noise or metrology-grade references.

What interface modes does the ADS8588SIPM support?

The ADS8588SIPM supports three configurable digital interfaces via the PAR/SER/BYTE SEL pin: parallel (16-bit DB[15:0] with CS/RD strobes), serial (SPI-compatible using RD/SCLK as clock and DOUTA/DOUTB as data), and parallel byte mode (two consecutive 8-bit reads using DB15/BYTE SEL). All modes operate across the full temperature range and support 200-kSPS throughput. Timing parameters - including setup/hold for CS, RD/SCLK, and CONVST - are fully specified in Sections 7.6–7.12 of the SBAS642A datasheet.

Is the ADS8588SIPM pin-compatible with other devices in the ADS858x family?

The ADS8588SIPM shares the same 64-pin LQFP package and core pinout with ADS8586S and ADS8584S, including identical placement of AVDD, AGND, DVDD, CONVSTA/B, BUSY, and REF-related pins. However, ADS8588SIPM provides eight analog input pairs (AIN_1P/GND through AIN_8P/GND), whereas ADS8586S offers six and ADS8584S offers four - meaning PCB layouts designed for ADS8588SIPM are forward-compatible but not backward-compatible without trace modification. No other functional or timing differences affect pin-level interoperability.