AD1928(RevB) Ver la hoja de datos (PDF) - Analog Devices
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AD1928 Datasheet PDF : 32 Pages
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AD1928
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)
Load current (digital output)
High level input voltage
Low level input voltage
20 pF
±1 mA or 1.5 kΩ to ½ DVDD supply
2.0 V
0.8 V
E 1 Functionally guaranteed at −40°C to +125°C case temperature.
ANALOG PERFORMANCE SPECIFICATIONS
T Specifications guaranteed at an ambient temperature of 25°C.
Table 1.
E Parameter
ANALOG-TO-DIGITAL CONVERTERS
ADC Resolution
L Dynamic Range
No Filter (RMS)
With A-Weighted Filter (RMS)
Total Harmonic Distortion + Noise
Full-Scale Input Voltage (Differential)
O Gain Error
Interchannel Gain Mismatch
Offset Error
S Gain Drift
Interchannel Isolation
CMRR
B Input Resistance
Input Capacitance
Input Common-Mode Bias Voltage
O DIGITAL-TO-ANALOG CONVERTERS
Conditions
All ADCs
20 Hz to 20 kHz, −60 dB input
−1 dBFS
100 mV rms, 1 kHz
100 mV rms, 20 kHz
Min Typ
24
98
100
−10
−0.25
−10
102
105
−96
1.9
0
100
−110
55
55
14
10
1.5
Max
−87
+10
+0.25
+10
Dynamic Range
20 Hz to 20 kHz, −60 dB input
No Filter (RMS)
98
104
With A-Weighted Filter (RMS)
100
106
With A-Weighted Filter (Average)
108
Total Harmonic Distortion + Noise
0 dBFS
Single-Ended Version
Two channels running
−92
Eight channels running
−86
−75
Full-Scale Output Voltage
0.88 (2.48)
Gain Error
−10
+10
Interchannel Gain Mismatch
−0.2
+0.2
Offset Error
−25 −4
+25
Gain Drift
−30
+30
Unit
Bits
dB
dB
dB
V rms
%
dB
mV
ppm/°C
dB
dB
dB
kΩ
pF
V
dB
dB
dB
dB
dB
V rms (V p-p)
%
dB
mV
ppm/°C
Rev. B | Page 3 of 32
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