–2–

REV. B

AD7811/AD7812–SPECIFICATIONS

Parameter

Y Version

Unit

Test Conditions/Comments

DYNAMIC PERFORMANCE

Signal to (Noise + Distortion) Ratio

1

58

dB min

Total Harmonic Distortion (THD)

1

–66

dB max

Peak Harmonic or Spurious Noise

1

–80

dB typ

Intermodulation Distortion

1, 2

fa = 29 kHz, fb = 30 kHz

Second Order Terms

–67

dB max

Third Order Terms

–67

dB max

Channel-to-Channel Isolation

1, 2

–80

dB typ

DC ACCURACY

Any Channel

Resolution

10

Bits

Minimum Resolution for Which

No Missing Codes are Guaranteed

10

Bits

Relative Accuracy

1

±1

LSB max

Differential Nonlinearity

1

±1

LSB max

Gain Error

1

±2

LSB max

Gain Error Match

1

±0.75

LSB max

Offset Error

1

±2

LSB max

Offset Error Match

1

±0.75

LSB max

ANALOG INPUT

Input Voltage Range

0

V min

V max

±1

µA max

Input Capacitance

2

20

pF max

REFERENCE INPUTS

2

1.2

V min

V max

Input Leakage Current

±3

µA max

Input Capacitance

20

pF max

ON-CHIP REFERENCE

Nominal 2.5 V

Reference Error

±2.5

% max

Temperature Coefficient

50

ppm/

°C typ

LOGIC INPUTS

2

2.4

V min

± 10%

0.8

V max

± 10%

2

V min

± 10%

0.4

V max

± 10%

±1

µA max

8

pF max

LOGIC OUTPUTS

µA

4V min

± 10%

2.4

V min

± 10%

µA

0.4

V max

High Impedance Leakage Current

±1

µA max

High Impedance Capacitance

15

pF max

CONVERSION RATE

Conversion time

2.3

µs max

Track/Hold Acquisition Time

1

200

ns max

[EXT]. All specifications –40 C to +105 C unless otherwise noted.)