REV. 0

–2–

AD1812–SPECIFICATIONS

STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED

DAC Test Conditions

Temperature

0

°C

Calibrated

5.0

V

0 dB Attenuation

5.0

V

Input Full Scale

16-Bit Linear Mode

48

kHz

10 k

Ω Output Load

Input Signal

1008

Hz

Mute Off

Analog Output Passband

20 Hz to 20 kHz

ADC Test Conditions

2.0

V

Calibrated

0 dB Gain

0.8

V

Input –1.0 dB Relative to Full Scale

2.4

V

Line Input Selected

0.4

V

16-Bit Linear Mode

ANALOG INPUT

Parameter

Min

Typ

Max

Units

Input Voltage (RMS Values Assume Sine Wave Input)

LINE, AUX1, MONO_IN, AUX2, DACIN

1

V rms

2.55

2.83

3.11

V p-p

MIC with +20 dB Gain (MGE = 1)

0.1

V rms

0.250

0.283

0.316

V p-p

MIC with 0 dB Gain (MGE = 0)

1

V rms

2.55

2.83

3.11

V p-p

Input Impedance*

10

17

k

Ω

Input Capacitance*

15

pF

PROGRAMMABLE GAIN AMPLIFIER—ADC

Parameter

Min

Typ

Max

Units

Step Size (0 dB to 22.5 dB)

1.3

1.5

1.7

dB

(All Steps Tested)

PGA Gain Range Span

21.5

22.5

23.5

dB

AUXILIARY, LINE, MICROPHONE AND MONO INPUT ANALOG GAIN/AMPLIFIERS/ATTENUATORS

Parameter

Min

Typ

Max

Units

Step Size: AUX1, AUX2, DACIN, LINE, MIC (All Steps Tested)

(+12 dB to –30 dB)

1.25

1.5

1.75

dB

(–31.5 dB to –34.5 dB)

1

1.5

2.0

dB

Input Gain/Attenuation Range: AUX1, AUX2, DACIN, LINE, MIC

45.0

46.5

47.5

dB

Step Size: MONO_IN (All Steps Tested)

(0 dB to –39 dB)

2.5

3.0

3.6

dB

(–42 dB to –45 dB)

2.2

3.0

3.85

dB

Input Gain/Attenuation Range: MONO_IN

43

45

46

dB

DIGITAL DECIMATION AND INTERPOLATION FILTERS*

Parameter

Min

Typ

Max

Units

Passband

0

0.4

× F

S

Hz

Passband Ripple

±0.1

dB

Transition Band

0.4

× F

S

0.6

× F

S

Hz

Stopband

0.6

× F

S

∞

Hz

Stopband Rejection

74

dB

Group Delay

sec

Group Delay Variation Over Passband

0.0

µs

*Guaranteed not tested.

Specifications subject to change without notice.