AD1987

Rev. 0

|

Page 5 of 18

|

May 2007

DIGITAL-TO-ANALOG CONVERTERS

Resolution

24

Bits

Gain Error (Full Scale Span Relative to Nominal Input Voltage)1

±10

%

Interchannel Gain Mismatch (Difference of Gain Errors)

±0.5

dB

1

–85

dB

DAC Crosstalk (Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure L_OUT)1

–95

dB

DAC VOLUMES

Step size (DAC-0, DAC-1, DAC-2, DAC-3)

1.5

dB

Output Gain/Attenuation Range

–58.5

0

dB

Mute Attenuation of 0 dB Fundamental1

–80

dB

ADC VOLUMES

Step size (ADCSEL-0, ADCSEL-1)

1.5

dB

PGA Gain/Attenuation Range

–58.5

+22.5

dB

ANALOG MIXER

Signal-to-Noise Ratio Input to Output—Ports B, C, or F, to Port D Output

95

dB

Step Size: All Mixer Inputs

–1.5

dB

Input Gain/Attenuation Range: All Mixer Inputs

–34.5

+12.0

dB

ANALOG LINE LEVEL OUTPUTS

Full-Scale Output Voltage: Line out drive enabled

1.0

V rms

3

Ports A, D, E, F, and Mono Out

2.83

V p-p

Output Impedance

1

190

Ω

External Load Impedance1

10

k

Ω

Output Capacitance

1

15

pF

External Load Capacitance1

1000

pF

ANALOG HP DRIVE OUTPUTS

Full-Scale Output Voltage: Line Out Drive Enabled

1.0

V rms3

Ports A and D (when HP Drive is Enabled)

2.83

V p-p

Output Impedance1

0.5

Ω

External Load Impedance

1

32

Ω

Output Capacitance1

15

pF

External Load Capacitance

1

1000

pF

ANALOG INPUTS

Input Voltages—Ports B, C, or E

Mic Boost = 0 dB

1

2.83

V rms3

V p-p

Input Voltages—Microphone Boost

Amplifier, Ports B, C, or E

Mic Boost = +10 dB

0.316

0.894

V rms3

V p-p

Mic Boost = +20 dB

0.1

0.283

V rms

3

V p-p

Mic Boost = +30 dB

0.032

0.089

V rms

3

V p-p

Input Impedance

PCBEEP

Ports B, C, E (Mic Boost = 0 dB)

Port F

23

150

45

k

Ω

k

Ω

k

Ω

Input Capacitance1

57.5

pF

Parameter

Min

Typ

Max

Unit