ad1879 Analog Devices, Inc., ad1879 Datasheet - Page 2

• Manufacturer Part Number: ad1879
• Description: High Performance 16-/18-bit Stereo Adcs
• Manufacturer: Analog Devices, Inc.

TEST CONDITIONS UNLESS OTHERWISE NOTED
Supply Voltages
Ambient Temperature
Input Clock (F
Input Signal
All minimums and maximums tested except as noted.
ANALOG PERFORMANCE
AD1879 Resolution
AD1878 Resolution
Clock Input Frequency Range
AD1879 Dynamic Range (0 kHz to 20 kHz, –60 dB input)
AD1879 Trimmed
AD1879 Untrimmed
AD1879 Trimmed
AD1878 Dynamic Range (0 kHz to 20 kHz, –60 dB 1.0936 kHz
AD1878 Trimmed
AD1878 Untrimmed
AD1878 Trimmed
Analog Inputs
DC Accuracy
Crosstalk (EIAJ Method)
Interchannel Phase Deviation
NOTES
1
2
3
4
Specifications subject to change without notice.
AD1878/AD1879–SPECIFICATIONS
Both channels connected together for mono operations as described below in “How to Extend SNR.”
Differential gain imbalance manually trimmed to eliminate second harmonic. See “Applications Issues” below.
Test performed without part-to-part trimming.
The differential input range is twice the range seen at each input pin. The input range corresponds to the full-scale digital output range.
CLOCK Input (F
Modulator Sample Rate (F
Output Word Rate (F
Stereo Mode (No A-Weight Filter)
Mono Mode
Stereo Mode (with A-Weight Filter)
Full Scale
–20 dB
Full Scale
–20 dB
Full Scale
–20 dB
Input Dithered with a –10 dB 21.873 kHz Sine Wave)
Stereo Mode (No A-Weight Filter)
Full Scale
–20 dB
Full Scale
–20 dB
Full Scale
–20 dB
Differential Input Range
Input Impedance at Each Input Pin
Gain Error
Interchannel Gain Mismatch
Gain Drift
AD1879 Midscale Offset Error
AD1878 Midscale Offset Error
Midscale Drift
Voltage Reference
1
CLOCK
(No A-Weight Filter)
2
2
2
2
CLOCK
Signal to (Noise + Distortion)
Signal to Total Harmonic Distortion
Signal to (Noise + Distortion)
Signal to Total Harmonic Distortion
3
3
)
Signal to (Noise + Distortion)
Signal to (Noise + Distortion)
S
= F
)
4
CLOCK
CLOCK
25
12.288
974
–0.5
5
/4)
/256)
V
MHz
Hz
dB Full Scale
C
–2–
Min
0.01
0.0025
0.039
100
93
91
95
93
91
2.4
100
5.985
Typ
18
16
12.288
3.072
48
103
106
105
98
83
96
83
98
100
97
95
77
94
77
98
100
7.0
0.05
150
13
2.86
105
6.3
1
200
50
0.001
Max
14.286
3.5715
55.8
0.15
3.2
6.615
5
750
200
Units
Bits
Bits
MHz
MHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
k
%
dB
ppm/ C
18-Bit LSBs
16-Bit LSBs
ppm/ C
V
dB
Degrees
REV. 0