®

2

ADS7845

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RESOLUTION

12

Bits

ANALOG INPUT

Full-Scale Input Span

Positive Input - Negative Input

0

V

Absolute Input Range

Positive Input

–0.2

V

Negative Input

–0.2

+0.2

V

Capacitance

25

pF

Leakage Current

0.1

µA

SYSTEM PERFORMANCE

No Missing Codes

11

Bits

Integral Linearity Error

±2

Offset Error

±6

LSB

Gain Error

±4

LSB

Noise

30

µVrms

Power Supply Rejection Ratio

70

dB

SAMPLING DYNAMICS

Conversion Time

12

Clk Cycles

Acquisition Time

3

Clk Cycles

Throughput Rate

125

kHz

Multiplexer Settling Time

500

ns

Aperture Delay

30

ns

Aperture Jitter

100

ps

Channel-to-Channel Isolation

100

dB

SWITCH DRIVERS

On-Resistance

UL, UR

7

Ω

LL, LR

7

Ω

REFERENCE INPUT

Range

1.0

V

Resistance

5G

Ω

Input Current

13

40

µA

2.5

µA

0.001

3

µA

DIGITAL INPUT/OUTPUT

Logic Family

CMOS

Logic Levels, Except PENIRQ

–0.3

+0.8

V

V

0.4

V

PENIRQ

0.8

V

Data Format

Straight Binary

POWER SUPPLY REQUIREMENTS

2.7

5.5

V

Quiescent Current

280

650

µA

220

µA

Shutdown Mode with

3

µA

Power Dissipation

1.8

mW

TEMPERATURE RANGE

Specified Performance

–40

+85

°C

SPECIFICATIONS

otherwise noted.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes

no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change

without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant

any BURR-BROWN product for use in life support devices and/or systems.

ADS7845E