Home Data converters Analog-to-digital converters (ADCs) Precision ADCs
Home
Data converters
Analog-to-digital converters (ADCs)
Precision ADCs

ADS8508

ACTIVE

12-Bit 250kHz CMOS Analog-to-Digital Converter With Serial Interface 2.5V Internal Reference

Order now
Data sheet

ADS8508

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 73 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 73 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm)
  • 250-kHz Sampling Rate
  • 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
  • 73-dB SINAD With 45-kHz Input
  • ±0.45 LSB Max INL
  • ±0.45 LSB Max DNL, 12-Bits No Missing Codes
  • ±1 LSB Bipolar Zero Errors
  • ±0.4 PPM/°C Bipolar Zero Error Drift
  • Six Specified Input Ranges
  • SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
  • 5-V Supply
  • Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809
  • Uses Internal or External Reference
  • 70-mW Typ Power Dissipation at 250 KSPS
  • 20-Pin SO Package
  • Simple DSP Interface
  • APPLICATIONS
    • Industrial Process Control
    • Data Acquisition Systems
    • Digital Signal Processing
    • Medical Equipment
    • Instrumentation
  • 250-kHz Sampling Rate
  • 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
  • 73-dB SINAD With 45-kHz Input
  • ±0.45 LSB Max INL
  • ±0.45 LSB Max DNL, 12-Bits No Missing Codes
  • ±1 LSB Bipolar Zero Errors
  • ±0.4 PPM/°C Bipolar Zero Error Drift
  • Six Specified Input Ranges
  • SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
  • 5-V Supply
  • Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809
  • Uses Internal or External Reference
  • 70-mW Typ Power Dissipation at 250 KSPS
  • 20-Pin SO Package
  • Simple DSP Interface
  • APPLICATIONS
    • Industrial Process Control
    • Data Acquisition Systems
    • Digital Signal Processing
    • Medical Equipment
    • Instrumentation

The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.

The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.
filter Find other Precision ADCs
Download View video with transcript Video

Technical documentation

No results found. Please clear your search and try again.
View all 4
Top documentation Type Title Format options Date
* Data sheet 12-Bit 250-KSPS Serial CMOS Sampling ADC datasheet Sep 22, 2005
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar 17, 2011
Application note Upgrading From ADS7808/09 to ADS8508/09 Devices Jun 12, 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

ADS8508 IBIS Model

SLAM102.ZIP (40 KB) - IBIS model
Supported products & hardware
Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

Supported products & hardware
Calculation tool

JITTER-SNR-CALC — Jitter and SNR calculator

JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.

Supported products & hardware
Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOIC (DW) 20 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos