AD1885JST Analog Devices Inc, AD1885JST Datasheet - Page 2

• Manufacturer Part Number: AD1885JST
• Description: IC AUDIO CODEC AC'97 48-LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1885JST

• Rohs Status: RoHS non-compliant
• Data Interface: Serial
• Resolution (bits): 16 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 87 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP

STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
AD1885–SPECIFICATIONS
Temperature
Digital Supply (DV
Analog Supply (AV
Sample Rate (F
Input Signal
Analog Output Passband
ANALOG INPUT
Parameter
Input Voltage (RMS Values Assume Sine Wave Input)
Input Impedance
Input Capacitance
MASTER VOLUME
Parameter
Step Size (0 dB to –94.5 dB); LINE_OUT_L, LINE_OUT_R
Output Attenuation Range Span
Step Size (0 dB to –46.5 dB); MONO_OUT
Output Attenuation Range Span
Step Size (+6 dB to –88.5 dB); HP_OUT_R, HP_OUT_L
Output Attenuation Range Span
Mute Attenuation of 0 dB Fundamental
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Parameter
Signal-to-Noise Ratio (SNR)
Step Size (+12 dB to –34.5 dB): (All Steps Tested)
Input Gain/Attenuation Range: MIC, LINE, AUX, CD, VIDEO, PHONE_IN, DAC
Step Size (0 dB to –45 dB): (All Steps Tested) PC_BEEP
Input Gain/Attenuation Range: PC_BEEP
MIC with 20 dB Gain (M20 = 1)
MIC with 0 dB Gain (M20 = 0)
LINE_IN, AUX, CD, VIDEO, PHONE_IN, PC_BEEP
Guaranteed, not tested.
CD to LINE_OUT
Other to LINE_OUT
MIC, LINE_IN, AUX, CD, VIDEO, PHONE_IN, DAC
S
)
DD
DD
)
)
25
3.3
5.0
48
1008
20 Hz to 20 kHz
°C
V
V
kHz
Hz
DAC Test Conditions
ADC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
Input 0 dB
10 kΩ Output Load (LINE_OUT)
32 Ω Output Load (HP_OUT)
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
Min
Min
Min
Min
Typ
1
2.83
0.1
0.283
1
2.83
20
5
Typ
1.5
–94.5
1.5
–46.5
1.5
–94.5
Typ
1.5
22.5
Typ
90
90
1.5
–46.5
3.0
–45
Max
7.5
Max
80
Max
Max
Unit
V rms
V p-p
V rms
V p-p
V rms
V p-p
kΩ
pF
Unit
dB
dB
dB
dB
dB
dB
dB
Unit
dB
dB
Unit
dB
dB
dB
dB
dB
dB