AD1938YSTZ Analog Devices Inc, AD1938YSTZ Datasheet - Page 4

IC CODEC 24BIT 4ADC/8DAC 48LQFP

AD1938YSTZ

Manufacturer Part Number
AD1938YSTZ
Description
IC CODEC 24BIT 4ADC/8DAC 48LQFP
Manufacturer
Analog Devices Inc
Type
General Purposer
Datasheet

Specifications of AD1938YSTZ

Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
4 / 8
Sigma Delta
Yes
S/n Ratio, Adcs / Dacs (db) Typ
94 / 94
Dynamic Range, Adcs / Dacs (db) Typ
105 / 106
Voltage - Supply, Analog
3 V ~ 3.6 V
Voltage - Supply, Digital
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Audio Codec Type
Audio
No. Of Adcs
4
No. Of Dacs
8
No. Of Input Channels
4
No. Of Output Channels
8
Adc / Dac Resolution
24bit
Adcs / Dacs Signal To Noise Ratio
108dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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AD1938
Parameter
REFERENCE
Specifications measured at a case temperature of 125°C.
Table 2.
Parameter
ANALOG-TO-DIGITAL CONVERTERS
DIGITAL-TO-ANALOG CONVERTERS
REFERENCE
CRYSTAL OSCILLATOR SPECIFICATIONS
Table 3.
Parameter
Transconductance
Full-Scale Input Voltage (Differential)
Interchannel Isolation
Interchannel Phase Deviation
Volume Control Step
Volume Control Range
De-emphasis Gain Error
Output Resistance at Each Pin
Internal Reference Voltage
External Reference Voltage
Common-Mode Reference Output
ADC Resolution
Dynamic Range
Total Harmonic Distortion + Noise
Gain Error
Interchannel Gain Mismatch
Offset Error
Dynamic Range
Total Harmonic Distortion + Noise
Full-Scale Output Voltage
Gain Error
Interchannel Gain Mismatch
Offset Error
Gain Drift
Internal Reference Voltage
External Reference Voltage
Common-Mode Reference Output
No Filter (RMS)
With A-Weighted Filter (RMS)
No Filter (RMS)
With A-Weighted Filter (RMS)
With A-Weighted Filter (Average)
Single-Ended Version
Single-Ended Version
Conditions
FILTR pin
FILTR pin
CM pin
Conditions
All ADCs
20 Hz to 20 kHz, −60 dB input
−1 dBFS
20 Hz to 20 kHz, −60 dB input
0 dBFS
Two channels running
Eight channels running
FILTR pin
FILTR pin
CM pin
Min
Rev. C | Page 4 of 32
Typ
3.5
Min
1.32
Min
95
97
−10
−0.25
−10
98
100
−10
−0.2
−25
−30
1.32
Max
Typ
100
0
0.375
95
100
1.50
1.50
1.50
Typ
24
102
105
−96
1.9
0
104
106
108
−92
−86
0.8775 (2.482)
−4
1.50
1.50
1.50
Max
±0.6
1.68
Unit
mmhos
Max
−87
+10
+0.25
+10
−70
+10
+0.2
25
30
1.68
Unit
dB
Degrees
dB
dB
dB
V
V
V
Unit
Bits
dB
dB
dB
V rms
%
dB
mV
dB
dB
dB
dB
dB
V rms (V p-p)
%
dB
mV
ppm/°C
V
V
V

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