ADS8508IBDW

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Texas Instruments

12-BIT 250KHZ CMOS ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE 2.5V INTERNAL REFERENCE

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ADS8508IBDW

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Texas Instruments

12-BIT 250KHZ CMOS ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE 2.5V INTERNAL REFERENCE

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Description Specifications Series Pricing CAD Documents

Description

General part information

ADS8508 Series

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.

Technical Specifications

Parameters and characteristics for this part

Specification	ADS8508IBDW

Architecture	SAR
Configuration	S/H-ADC
Data Interface	SPI
Input Type	Single Ended
Mounting Type	Surface Mount
Number of A/D Converters	1 count
Number of Bits	12 bits
Number of Inputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package Length	0.295 in
Package Name	20-SOIC
Package Width	7.5 mm
Ratio - ADC	1
Ratio - S/H	1
Reference Type	External, Internal
Sampling Rate (Per Second)	250 kHz
Voltage - Supply, Analog	5 V
Voltage - Supply, Digital	5 V

ADS8508 Series

Part	Package Name	Sampling Rate (Per Second)	Data Interface	Number of Inputs	Ratio - ADC	Ratio - S/H	Configuration	Architecture	Number of A/D Converters	Reference Type	Package Length	Package Width	Number of Bits	Input Type	Voltage - Supply, Digital	Voltage - Supply, Analog	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type
Texas Instruments ADS8508IBDWRG4	20-SOIC	250 kHz	SPI	1	1	1	S/H-ADC	SAR	1 count	External Internal	0.295 in	7.5 mm	12 bits	Single Ended	5 V	5 V	-40 °C	85 °C	Surface Mount
Texas Instruments ADS8508IBDWR	20-SOIC	250 kHz	SPI	1	1	1	S/H-ADC	SAR	1 count	External Internal	0.295 in	7.5 mm	12 bits	Single Ended	5 V	5 V	-40 °C	85 °C	Surface Mount
Texas Instruments ADS8508IBDW	20-SOIC	250 kHz	SPI	1	1	1	S/H-ADC	SAR	1 count	External Internal	0.295 in	7.5 mm	12 bits	Single Ended	5 V	5 V	-40 °C	85 °C	Surface Mount

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

Upgrading From ADS7808/09 to ADS8508/09 Devices

Determining Minimum Acquisition Times for SAR ADCs, part 2