ADS7955-Q1

AKTIV

SAR-ADC für die Automobilindustrie, 10 Bit, 1 MSPS, 8 Kanäle, unsymmetrisch

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Datenblatt

document-pdfAcrobat 10-Bit, 1 MSPS, 8Channel, Single-Ended, MicroPower, Serial Interface ADC datasheet (Englisch)

ADS7955-Q1

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Resolution (Bits)

10

Sample rate (max) (ksps)

1000

Number of input channels

8

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Automotive

TI functional safety category

Functional Safety-Capable

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)

60

Digital supply (min) (V)

1.7

Digital supply (max) (V)

5.25

Resolution (Bits)

10

Sample rate (max) (ksps)

1000

Number of input channels

8

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Automotive

TI functional safety category

Functional Safety-Capable

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)

60

Digital supply (min) (V)

1.7

Digital supply (max) (V)

5.25

TSSOP (DBT)

30

49.92 mm² (7.8 mm × 6.4 mm)

Qualified for Automotive Applications
1-MHz Sample Rate Serial Devices
10-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 2.5V and 0 to 5V
Auto and Manual Modes for Channel Selection
8-Channel Device can Share 16 Channel Device Footprint
Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs for TSSOP Package Devices
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)
30-Pin TSSOP Package

Qualified for Automotive Applications
1-MHz Sample Rate Serial Devices
10-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 2.5V and 0 to 5V
Auto and Manual Modes for Channel Selection
8-Channel Device can Share 16 Channel Device Footprint
Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs for TSSOP Package Devices
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)
30-Pin TSSOP Package

The ADS7955-Q1 is a 10-bit multichannel analog-to-digital converter.

The device includes a capacitor based SAR A/D converter with inherent sample and hold.

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

A wide 1.7V to 5.25V I/O supply range facilitates a glue-less interface with the most commonly used CMOS 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 device allows auto sequencing of preselected channels or manual selection of a channel for the next conversion cycle.

There are two software selectable input ranges (0V - 2.5V and 0V - 5V), four individually configurable GPIOs, and two programmable alarm thresholds per channel. These features make the device suitable for most data acquisition applications.

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