2

®

ADS7804

RESOLUTION

12

*

Bits

ANALOG INPUT

Voltage Ranges

±10V

*

V

Impedance

23

*

k

Ω

Capacitance

35

*

pF

THROUGHPUT SPEED

Conversion Time

5.7

8

*

*

µs

Complete Cycle

Acquire and Convert

10

*

µs

Throughput Rate

100

*

kHz

DC ACCURACY

Integral Linearity Error

±0.9

±0.45

Differential Linearity Error

±0.9

±0.45

LSB

No Missing Codes

*

Bits

0.1

*

LSB

±0.5

±0.25

%

Full Scale Error Drift

±7

±5

ppm/

°C

Ext. 2.5000V Ref

±0.5

±0.25

%

Full Scale Error Drift

Ext. 2.5000V Ref

±2

*

ppm/

°C

±10

±10

mV

Bipolar Zero Error Drift

±2

*

ppm/

°C

Power Supply Sensitivity

±0.5

*

LSB

AC ACCURACY

Spurious-Free Dynamic Range

80

*

Total Harmonic Distortion

–80

*

dB

Signal-to-(Noise+Distortion)

70

72

dB

Signal-to-Noise

70

72

dB

250

*

kHz

SAMPLING DYNAMICS

Aperture Delay

40

*

ns

Aperture Jitter

*

Transient Response

FS Step

2

*

µs

150

*

ns

REFERENCE

Internal Reference Voltage

2.48

2.5

2.52

*

*

*

V

Internal Reference Source Current

1

*

µA

(Must use external buffer.)

Internal Reference Drift

8

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

+2.0

*

*

V

±10

*

µA

±10

*

µA

DIGITAL OUTPUTS

Data Format

Data Coding

+0.4

*

V

*

V

Leakage Current

High-Z State,

±5*

µA

Output Capacitance

High-Z State

15

15

pF

DIGITAL TIMING

Bus Access Time

83

*

ns

Bus Relinquish Time

83

*

ns

SPECIFICATIONS

ELECTRICAL

ADS7804P, U

ADS7804PB, UB

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

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.

Guaranteed

Sufficient to meet AC specs

Parallel 12 bits

Binary Two’s Complement