AD1985 Analog Devices, AD1985 Datasheet - Page 6

• Manufacturer Part Number: AD1985
• Description: AC'97 2.3 Soundmax Codec W/jack Sensing
• Manufacturer: Analog Devices

AD1985
ANALOG OUTPUT
Parameter
Full-Scale Output Voltage:
Full-Scale Output Voltage: HP_OUT
V
V
V
V
V
Mute Click (Muted Output Unmuted Mid-Scale DAC Output)
Note: Setting V
with a stereo microphone application circuit.
STATIC DIGITAL SPECIFICATIONS
Parameter
DIGITAL INPUTS/OUTPUTS
Input Leakage Current
Output Leakage Current
Input/Output Pin Capacitance
POWER SUPPLY
Parameter
Power Supply Range—Analog (AV
Power Supply Range—Digital (DV
Power Dissipation—5 V/3.3 V
Power Supply Rejection (100 mV p-p Signal @ 1 kHz)
POWER-DOWN STATES
Parameter
Full Power-Up
ADC
FRONT DAC
CENTER DAC
SURROUND DAC
LFE DAC
ADC + ALL DACs
Mixer
ADC + Mixer
ALL DACs + Mixer
ADC + ALL DACs + Mixer
Standby
Headphone Standby
1
2
3
Guaranteed, not tested.
Currents measured with V
PR bits are controlled in Registers 0x2A and 0x26.
REF
REFOUT
REFOUT
REFOUT
REFOUT
High Level Input Voltage (V
Low Level Input Voltage (V
High Level Output Voltage (V
Low Level Output Voltage (V
Output Impedance
External Load Impedance
Output Capacitance
External Load Capacitance
External Load Capacitance
External Load Impedance
(VREFH, VREFD = 00 in Reg 0x76)
(VREFH, VREFD = 10)
(VREFH, VREFD = 11)
Current Drive
REFOUT
to 0 V reduces crosstalk when Center/LFE is sharing the MIC jack. The Center-LFE crosstalk should be better than –60 dB at 100 Hz when sharing
REFOUT
1
1
LINE OUT, MONO OUT, CENTER, LFE
unloaded.
IL
IH
2
1
1
)
)
OL
1
OH
), I
), I
DD
DD
OL
OH
)
)
= 2 mA
= 2 mA
PR[K:I]
000
000
000
001
010
100
111
000
000
111
111
111
000
3
1
Rev. 0 | Page 6 of 48
PR[6:0]
000 0000
000 0001
000 0010
000 0000
000 0000
000 0000
000 0011
000 0100
000 0101
000 0110
000 0111
011 1111
100 0000
2
32
2.1
0.65 × DV
0.9 × DV
–10
–10
4.5
2.97
Min
Min
Min
3
DD
DD
Typ
1
2.83
300
10
15
1
2.83
2.25
2.25
3.70
0.0
±5
Typ
Typ
465
40
DV
55.5
47.4
49.5
55.5
49.0
55.1
15.8
55.5
47.4
34.1
14.3
0.114
55.5
Max
500
1000
1000
2.4
5
Max
0.35 × DV
0.1 × DV
+10
+10
7.5
Max
5.5
3.63
DD
(3.3 V) Typ AV
DD
DD
Unit
V rms
V p-p
Ω
kΩ
pF
pF
V rms
V p-p
pF
Ω
V
V
V
V
mA
mV
Unit
V
V
V
V
µA
µA
pF
Unit
V
V
mW
dB
56.0
49.9
47.9
56.0
47.5
56.0
24.2
34.3
27.4
10.0
2.5
0.004
48.3
DD
(5 V) Typ
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA