ADS7871

現行

具有 ADC、MUX、PGA 和內部參考的 14 位元 48KSPS DAS

立即訂購

產品規格表

document-pdfAcrobat ADS7871: 14-Bit A/D Converter, MUX, PGA & Internal Reference DAQ System datasheet (Rev. C) (英文)

ADS7871

現行

產品規格表

立即訂購

產品詳細資料

Resolution (Bits)

14

Sample rate (max) (ksps)

48

Number of input channels

8

Interface type

SPI

Architecture

SAR

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5.5

Input voltage range (min) (V)

0

Features

Oscillator, PGA

Operating temperature range (°C)

-40 to 85

Power consumption (typ) (mW)

8.5

Analog supply voltage (min) (V)

2.7

Analog supply voltage (max) (V)

5.5

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.5

Resolution (Bits)

14

Sample rate (max) (ksps)

48

Number of input channels

8

Interface type

SPI

Architecture

SAR

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5.5

Input voltage range (min) (V)

0

Features

Oscillator, PGA

Operating temperature range (°C)

-40 to 85

Power consumption (typ) (mW)

8.5

Analog supply voltage (min) (V)

2.7

Analog supply voltage (max) (V)

5.5

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.5

SSOP (DB)

28

79.56 mm² 10.2 x 7.8

PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20 V/V
Programmable Input (Up to 4-Channel Differential/Up to 8-Channel Single-Ended or Some Combination)
1.15-V, 2.048-V, or 2.5-V Internal Reference
SPI/DSP Compatible Serial Interface ( 20 MHz)
Throughput Rate: 48 kSamples/sec
Error Overload Indicator
Programmable Output 2s Complement/Binary
2.7-V to 5.5-V Single Supply Operation
4-Bit Digital I/O Via Serial Interface
Pin Compatible With ADS7870
SSOP-28 Package
APPLICATIONS
- Portable Battery-Powered Systems
- Low-Power Instrumentation
- Low-Power Control Systems
- Smart Sensor Applications

All trademarks are the property of their respective owners.

PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20 V/V
Programmable Input (Up to 4-Channel Differential/Up to 8-Channel Single-Ended or Some Combination)
1.15-V, 2.048-V, or 2.5-V Internal Reference
SPI/DSP Compatible Serial Interface ( 20 MHz)
Throughput Rate: 48 kSamples/sec
Error Overload Indicator
Programmable Output 2s Complement/Binary
2.7-V to 5.5-V Single Supply Operation
4-Bit Digital I/O Via Serial Interface
Pin Compatible With ADS7870
SSOP-28 Package
APPLICATIONS
- Portable Battery-Powered Systems
- Low-Power Instrumentation
- Low-Power Control Systems
- Smart Sensor Applications

All trademarks are the property of their respective owners.

The ADS7871 (US patents 6140872, 6060874) is a complete low power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 14-bit successive approximation analog-to-digital (A/D) converter and a precision voltage reference.

The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise.

For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input.

The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.

The ADS7871 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10 ppm/°C. An external reference can be used in situations where multiple ADS7871s share a common reference.

The serial interface allows the use of SPI™, QSPI™, Microwire™, and 8051-family protocols, without glue logic.

The ADS7871 (US patents 6140872, 6060874) is a complete low power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 14-bit successive approximation analog-to-digital (A/D) converter and a precision voltage reference.

The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise.

For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input.

The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.

The ADS7871 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10 ppm/°C. An external reference can be used in situations where multiple ADS7871s share a common reference.

The serial interface allows the use of SPI™, QSPI™, Microwire™, and 8051-family protocols, without glue logic.

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