ADS8664

ACTIVO

ADC SAR de 12 bits con 4 canales, 500 kSPS y entradas bipolares con alimentación 5 V desactivada

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Hoja de datos

document-pdfAcrobat ADS866x 12-Bit, 500-kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs with Bipolar Input Ranges datasheet (Inglés) PDF | HTML

ADS8664

ACTIVO

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Detalles del producto

Resolution (Bits)

12

Sample rate (max) (ksps)

500

Number of input channels

4

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

Internal

Input voltage range (max) (V)

10.24

Input voltage range (min) (V)

-10.24

Features

Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

65

Analog supply voltage (min) (V)

4.75

Analog supply voltage (max) (V)

5.25

SNR (dB)

73.8

Digital supply (min) (V)

1.65

Digital supply (max) (V)

5.25

Resolution (Bits)

12

Sample rate (max) (ksps)

500

Number of input channels

4

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

Internal

Input voltage range (max) (V)

10.24

Input voltage range (min) (V)

-10.24

Features

Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

65

Analog supply voltage (min) (V)

4.75

Analog supply voltage (max) (V)

5.25

SNR (dB)

73.8

Digital supply (min) (V)

1.65

Digital supply (max) (V)

5.25

TSSOP (DBT)

38

62.08 mm² (9.7 mm × 6.4 mm)

12-Bit ADCs with Integrated Analog Front-End
4-, 8-Channel MUX with Auto and Manual Scan
Channel-Independent Programmable Inputs:
- ±10.24 V, ±5.12 V, ±2.56 V, ±1.28 V, ±0.64 V
- 10.24 V, 5.12 V, 2.56 V, 1.28 V
5-V Analog Supply: 1.65-V to 5-V I/O Supply
Constant Resistive Input Impedance: 1 MΩ
Input Overvoltage Protection: Up to ±20 V
On-Chip, 4.096-V Reference with Low Drift
Excellent Performance:
- 500-kSPS Aggregate Throughput
- DNL: ±0.2 LSB; INL: ±0.2 LSB
- Low Drift for Gain Error and Offset
- SNR: 73.8 dB; THD: –95 dB
- Low Power: 65 mW
AUX Input → Direct Connection to ADC Inputs
ALARM → High and Low Thresholds per Channel
SPI™-Compatible Interface with Daisy-Chain
Industrial Temperature Range: –40°C to 125°C
TSSOP-38 Package (9.7 mm × 4.4 mm)

12-Bit ADCs with Integrated Analog Front-End
4-, 8-Channel MUX with Auto and Manual Scan
Channel-Independent Programmable Inputs:
- ±10.24 V, ±5.12 V, ±2.56 V, ±1.28 V, ±0.64 V
- 10.24 V, 5.12 V, 2.56 V, 1.28 V
5-V Analog Supply: 1.65-V to 5-V I/O Supply
Constant Resistive Input Impedance: 1 MΩ
Input Overvoltage Protection: Up to ±20 V
On-Chip, 4.096-V Reference with Low Drift
Excellent Performance:
- 500-kSPS Aggregate Throughput
- DNL: ±0.2 LSB; INL: ±0.2 LSB
- Low Drift for Gain Error and Offset
- SNR: 73.8 dB; THD: –95 dB
- Low Power: 65 mW
AUX Input → Direct Connection to ADC Inputs
ALARM → High and Low Thresholds per Channel
SPI™-Compatible Interface with Daisy-Chain
Industrial Temperature Range: –40°C to 125°C
TSSOP-38 Package (9.7 mm × 4.4 mm)

The ADS8664 and ADS8668 are 4- and 8-channel, integrated data acquisition systems based on a 12-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500 kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20 V, a 4- or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096-V reference with low temperature drift. Operating on a single 5-V analog supply, each input channel on the devices can support true bipolar input ranges of ±10.24 V, ±5.12 V, ±2.56 V, ±1.28V and ±0.64V, as well as unipolar input ranges of 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V and 0 V to 1.28 V. The gain of the analog front-end for all input ranges is accurately trimmed to ensure a high dc precision. The input range selection is software-programmable and independent for each channel. The devices offer a 1-MΩ constant resistive input impedance irrespective of the selected input range.

The ADS8664 and ADS8668 offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65 V to 5.25 V, enabling direct interface to a wide range of host controllers.

The ADS8664 and ADS8668 are 4- and 8-channel, integrated data acquisition systems based on a 12-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500 kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20 V, a 4- or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096-V reference with low temperature drift. Operating on a single 5-V analog supply, each input channel on the devices can support true bipolar input ranges of ±10.24 V, ±5.12 V, ±2.56 V, ±1.28V and ±0.64V, as well as unipolar input ranges of 0 V to 10.24 V, 0 V to 5.12 V, 0 V to 2.56 V and 0 V to 1.28 V. The gain of the analog front-end for all input ranges is accurately trimmed to ensure a high dc precision. The input range selection is software-programmable and independent for each channel. The devices offer a 1-MΩ constant resistive input impedance irrespective of the selected input range.

The ADS8664 and ADS8668 offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65 V to 5.25 V, enabling direct interface to a wide range of host controllers.

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*	Hoja de datos	ADS866x 12-Bit, 500-kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs with Bipolar Input Ranges datasheet	PDF \| HTML	14/07/2015
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