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AD1939 Datasheet(PDF) 3 Page - Analog Devices

Part No. AD1939
Description  4 ADC/8 DAC with PLL, 192 kHz, 24-Bit CODEC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD1939
Rev. 0 | Page 3 of 32
SPECIFICATIONS
TEST CONDITIONS
Performance of all channels is identical, exclusive of the interchannel gain mismatch and interchannel phase deviation specifications.
Supply voltages (AVDD, DVDD)
3.3 V
Temperature range1
as specified in Table 1 and Table 2
Master clock
12.288 MHz (48 kHz fS, 256 × fS mode)
Input sample rate
48 kHz
Measurement bandwidth
20 Hz to 20 kHz
Word width
24 bits
Load capacitance (digital output)
20 pF
Load current (digital output)
±1 mA or 1.5 kΩ to ½ DVDD supply
Input voltage HI
2.0 V
Input voltage LO
0.8 V
1 Functionally guaranteed at −40°C to +125°C case temperature.
ANALOG PERFORMANCE SPECIFICATIONS
Specifications guaranteed at 25°C (ambient).
Table 1.
Parameter
Conditions/Comments
Min
Typ
Max
Unit
ANALOG-TO-DIGITAL CONVERTERS
ADC Resolution
All ADCs
24
Bits
Dynamic Range
20 Hz to 20 kHz, −60 dB input
No Filter (RMS)
96
102
dB
With A-Weighted Filter (RMS)
98
105
dB
Total Harmonic Distortion + Noise
−1 dBFS
−96
−87
dB
Gain Error
−10
+10
%
Interchannel Gain Mismatch
−0.25
+0.25
dB
Offset Error
−10
0
+10
mV
Gain Drift
100
ppm/°C
Interchannel Isolation
−110
dB
CMRR
100 mV rms, 1 kHz
55
dB
100 mV rms, 20 kHz
55
dB
Input Resistance
14
Input Capacitance
10
pF
Input Common-Mode Bias Voltage
1.5
V
DIGITAL-TO-ANALOG CONVERTERS
Dynamic Range
20 Hz to 20 kHz, −60 dB input
No Filter (RMS)
102
107
dB
With A-Weighted Filter (RMS)
105
110
dB
With A-Weighted Filter (Avg)
112
dB
Total Harmonic Distortion + Noise
0 dBFS
Two channels running
−94
dB
Eight channels running
−86
−76
dB
Full-Scale Output Voltage
1.76 (4.96)
V rms (V p-p)
Gain Error
−10
+10
%
Interchannel Gain Mismatch
−0.2
+0.2
dB
Offset Error
−25
−6
+25
mV
Gain Drift
−30
+30
ppm/°C
Interchannel Isolation
100
dB
Interchannel Phase Deviation
0
Degrees




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