ADS7945 datasheet(12/51 Pages) TI2

Part #	ADS7945

Description	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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12 / 51 page

2.7

3.2

3.7

4.2

4.7

5.2

5.7

AVDD, Analog Supply Voltage (V)

fIN = 20 kHz

G018

2.5

3.5

4.5

5.5

Reference Voltage (V)

AVDD = 5.25 V

fIN = 20 kHz

G020

−40 −25 −10

110 125

Free-Air Temperature (°C)

fIN = 20 kHz

G019

100

fIN, Input Frequency (kHz)

G021

2.7

3.2

3.7

4.2

4.7

5.2

5.7

AVDD, Analog Supply Voltage (V)

fIN = 20 kHz

G022

2.5

3.5

4.5

5.5

Reference Voltage (V)

AVDD = 5.25 V

fIN = 20 kHz

G024

ADS7945

ADS7946

SBAS539B

– JUNE 2011 – REVISED SEPTEMBER 2011

www.ti.com

TYPICAL CHARACTERISTICS: ADS7945 (continued)

At TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, VREF = 2.5 V, and fSAMPLE = 2 MSPS, unless otherwise noted.

SNR vs ANALOG SUPPLY VOLTAGE

SNR vs REFERENCE VOLTAGE

Figure 13.

Figure 14.

SNR vs FREE-AIR TEMPERATURE

SNR vs INPUT FREQUENCY

Figure 15.

Figure 16.

SINAD vs ANALOG SUPPLY VOLTAGE

SINAD vs REFERENCE VOLTAGE

Figure 17.

Figure 18.

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