AD1983

Rev. 0 | Page 3 of 16

SPECIFICATIONS

TEST CONDITIONS

Test conditions for the AD1983 are as follows, unless otherwise noted.

General Test Conditions

Temperature at 25°C

Input signal at 1.0 kHz

Analog output pass band at 20 Hz to 20,000 Hz

DAC Test Conditions

Calibrated

Output −3 dB relative to full scale

10 kΩ output load, Port D, and MONO_OUT

32 Ω output load, Port A

ADC Test Conditions

Calibrated

0 dB PGA gain

Input −3.0 dB relative to full scale

Table 1.

Parameter

Conditions

Min

Typ

Max

Unit

ANALOG INPUT

Port-B, Port-C

0 dB

1

V rms1

2.83

V p-p

Port-B, Port-C

10 dB

0.316

V rms

0.894

V p-p

Port-B, Port-C

20 dB

0.1

V rms

0.283

V p-p

Port-B, Port-C

30 dB

0.032

V rms

0.089

V p-p

Input Impedance2

20

kΩ

Input Capacitance2

5

7.5

pF

MASTER VOLUME

Step Size

Port-A, Port-D, MONO_OUT

1.5

dB

Output Gain Range

–46.5

+3

dB

Mute Attenuation of 0 dB Fundamental

80

dB

PROGRAMMABLE GAIN AMPLIFIER—

ADC

Step Size

1.5

dB

PGA Gain Range

0.0

22.5

dB

ANALOG MIXER—INPUT

GAIN/AMPLIFIERS/ATTENUATORS

Signal-to-Noise Ratio (SNR)

Line In to Line Out

85

dB

Microphone In to Line Out2

80

dB

Step Size

All mixer inputs except digital PC BEEP

1.5

dB

Step Size: Digital PC Beep

3.0

dB

Input Gain Range

All mixer inputs except digital PC BEEP

−34.5

+12.0

dB

Digital PC Beep

−45.0

0.0

dB

DIGITAL DECIMATION AND

INTERPOLATION FILTERS2

Pass Band

0

Hz

Pass-Band Ripple

±0.09

dB

Transition Band

Hz

Stop Band

∞

Hz

Stop-Band Rejection

−74

dB