AD1845 Analog Devices, AD1845 Datasheet - Page 3

• Manufacturer Part Number: AD1845
• Description: Parallel-port 16-Bit Soundport Stereo Codec
• Manufacturer: Analog Devices

REV. B
ANALOG-TO-DIGITAL CONVERTERS
Resolution
Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)
THD+N (Referenced to Full Scale)
Signal-to-Intermodulation Distortion
ADC Crosstalk*
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
ADC Offset Error
DIGITAL-TO-ANALOG CONVERTERS
Resolution
Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)
THD+N (Referenced to Full Scale)
Signal-to-Intermodulation Distortion
Gain Error (Full-Scale Span Relative to Nominal Output Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
DAC Crosstalk* (Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure L_OUT)
Total Out-of-Band Energy (Measured from 0.6 F
Audible Out-of-Band Energy (Measured from 0.6 F
DAC ATTENUATOR
Step Size (0 dB to –22.5 dB)
Step Size (–22.5 dB to –94.5 dB)*
Output Attenuation Range Span*
ANALOG OUTPUT
Full-Scale Output Voltage
Output Impedance*
External Load Impedance
Output Capacitance*
External Load Capacitance
V
V
V
Mute Attenuation of 0 dB Fundamental* (L_OUT, R_OUT, M_OUT)
Mute Click (Muted Output Minus Unmuted Midscale DAC Output)*
*Guaranteed not tested.
REF
REF
REF
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
Line to MIC (Input LINE, Ground and Select MIC, Read ADC)
Line to AUX1
Line to AUX2
OL = 0
OL = 1
Current Drive
Output Impedance
S
to 100 kHz)*
S
to 20 kHz)*
–3–
Min
73
–18.5
Min
74
–14.5
Min
1.3
1.0
93.5
Min
1.7
2.4
10
2.05
Typ
16
81
–76
85
–90
–90
–90
–90
Typ
16
82
–78
90
Typ
1.5
1.5
94.5
Typ
2.0
2.83
2.25
100
4
Max
0.025
–72
–80
–80
–80
–80
+10
10
Max
0.032
–70
+10
–80
–50
–70
Max
1.7
2.0
95.5
Max
2.2
3.11
600
15
100
2.60
–80
0.9
0.6
5
AD1845
Units
Bits
dB
%
dB
dB
dB
dB
dB
dB
%
dB
mV
Units
Bits
dB
%
dB
dB
%
dB
dB
dB
dB
Units
dB
dB
dB
Units
V p-p
V p-p
k
pF
pF
V
k
dB
mV
A