2

®

ADS7819

SPECIFICATIONS

At T

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.

ADS7819P, U

ADS7819PB, UB

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

RESOLUTION

12

*

Bits

ANALOG INPUT

Voltage Range

±2.5

*

V

Impedance

3.1

*

k

Ω

Capacitance

5*

pF

THROUGHPUT SPEED

Conversion Time

940

*

ns

Complete Cycle

Acquire & Convert

1250

*

ns

Throughput Rate

800

*

kHz

DC ACCURACY

Integral Linearity Error

±1

±0.75

Differential Linearity Error

±1

*

LSB

No Missing Codes

Guaranteed

*

0.1

*

LSB

±0.5

±0.25

%

Full Scale Error Drift

±12

*

ppm/

°C

Ext. 2.5000V Ref

±0.5

*

%

Full Scale Error Drift

Ext. 2.5000V Ref

±12

*

ppm/

°C

±8

±4

LSB

Bipolar Zero Error Drift

±2

*

ppm/

°C

Power Supply Sensitivity

±5

*

LSB

±0.5

*

LSB

AC ACCURACY

Spurious-Free Dynamic Range

74

84

77

85

Total Harmonic Distortion

–82

–74

–83

–77

dB

Signal-to-(Noise+Distortion)

68

71

70

*

dB

Signal-to-Noise

68

71

70

*

dB

1.5

*

MHz

SAMPLING DYNAMICS

Aperture Delay

20

*

ns

Aperture Jitter

10

*

ps

Transient Response

FS Step

180

*

ns

250

*

ns

REFERENCE

Internal Reference Voltage

2.48

2.5

2.52

*

*

*

V

Internal Reference DC Source Current

100

*

µA

(External load should be static)

Internal Reference Drift

6

ppm/

°C

External Reference Voltage Range

2.3

2.5

2.7

*

*

*

V

For Specified Linearity

External Reference Current Drain

Ext. 2.5000V Ref

100

*

µA

DIGITAL INPUTS

Logic Levels

–0.3

+0.8

*

*

V

+2.4

*

*

V

±10

*

µA

±10

*

µA

DIGITAL OUTPUTS

Data Format

Parallel 12-bits

Data Coding

Binary Two’s Complement

+0.4

*

V

+2.8

*

V

Leakage Current

High-Z State,

±5*

µA

Output Capacitance

High-Z State

15

*

pF

DIGITAL TIMING

Bus Access Time

62

*

ns

Bus Relinquish Time

83

*

ns