ADS7950

활성

12비트, 1MSPS, 4채널, 단일 종단, 마이크로파워, sr i/f, SAR ADC

지금 주문하기

데이터 시트

document-pdfAcrobat ADS79xx Pin Compatible, 12-, 10-, 8-Bit, 1-MSPS, 16-, 12-, 8-, 4-Channel, Single-Ended, Serial Interface ADCs datasheet (Rev. C) (영어) PDF | HTML

ADS7950

활성

데이터 시트

지금 주문하기

제품 상세 정보

Resolution (Bits)

12

Sample rate (max) (ksps)

1000

Number of input channels

4

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External

Input voltage range (max) (V)

5.25

Input voltage range (min) (V)

0

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

11.5

Analog supply voltage (min) (V)

2.7

Analog supply voltage (max) (V)

5.25

SNR (dB)

71.7

Digital supply (min) (V)

1.7

Digital supply (max) (V)

5.25

Resolution (Bits)

12

Sample rate (max) (ksps)

1000

Number of input channels

4

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External

Input voltage range (max) (V)

5.25

Input voltage range (min) (V)

0

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

11.5

Analog supply voltage (min) (V)

2.7

Analog supply voltage (max) (V)

5.25

SNR (dB)

71.7

Digital supply (min) (V)

1.7

Digital supply (max) (V)

5.25

TSSOP (DBT)

30

49.92 mm² 7.8 x 6.4

VQFN (RGE)

24

16 mm² 4 x 4

1-MHz Sample Rate Serial Devices
Product Family of 12-, 10-, 8-Bit Resolution
Zero Latency
20-MHz Serial Interface
Analog Supply Range: 2.7 to 5.25 V
I/O Supply Range: 1.7 to 5.25 V
Two SW Selectable Unipolar, Input Ranges: 0 to V_REF and 0 to 2 x V_REF
Auto and Manual Modes for Channel Selection
4-, 8-Channel Devices and 12-, 16-Channel Devices Share the Same Footprint
Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs in TSSOP Package: One GPIO in VQFN Package
Typical Power Dissipation: 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS
Power-Down Current (1 µA)
Input Bandwidth (47 MHz at 3 dB)
38-, 30-Pin TSSOP and 32-, 24-Pin VQFN Packages

1-MHz Sample Rate Serial Devices
Product Family of 12-, 10-, 8-Bit Resolution
Zero Latency
20-MHz Serial Interface
Analog Supply Range: 2.7 to 5.25 V
I/O Supply Range: 1.7 to 5.25 V
Two SW Selectable Unipolar, Input Ranges: 0 to V_REF and 0 to 2 x V_REF
Auto and Manual Modes for Channel Selection
4-, 8-Channel Devices and 12-, 16-Channel Devices Share the Same Footprint
Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs in TSSOP Package: One GPIO in VQFN Package
Typical Power Dissipation: 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS
Power-Down Current (1 µA)
Input Bandwidth (47 MHz at 3 dB)
38-, 30-Pin TSSOP and 32-, 24-Pin VQFN Packages

The ADS79xx is a 12-, 10-, 8-bit pin compatible multichannel analog-to-digital converter family. The device comparison table shows all twelve devices from this product family.

The devices include a capacitor based SAR A/D converter with inherent sample and hold.

The devices accept a wide analog supply range from 2.7 V to 5.25 V. Very low power consumption makes these devices suitable for battery-powered and isolated power-supply applications.

A wide 1.7-V to 5.25-V I/O supply range facilitates a glueless interface with the most commonly used digital hosts. The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP.

The input signal is sampled with the falling edge of CS. It uses SCLK for conversion, serial data output, and reading serial data in. The devices allow auto sequencing of preselected channels or manual selection of a channel for the next conversion cycle.

There are two software selectable input ranges (0 V to V_REF and 0 V to 2 × V_REF), individually configurable GPIOs (four in case of the TSSOP and one on the VQFN package devices), and two programmable alarm thresholds per channel. These features make the devices suitable for most data acquisition applications.

The devices offer an attractive power-down feature. This is extremely useful for power saving when the device is operated at lower conversion speeds.

The 16-, 12-channel devices from this family are available in a 38-pin TSSOP and 32 pin VQFN package and the 4/8-channel devices are available in a 30-pin TSSOP and 24 pin VQFN packages.