參數(shù)資料
型號(hào): EVAL-AD1938AZ
廠商: Analog Devices Inc
文件頁數(shù): 23/32頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD1938
標(biāo)準(zhǔn)包裝: 1
主要目的: 音頻編解碼器
已用 IC / 零件: AD1938
主要屬性: 24 位,192 kHz,4 ADC: 107dB 動(dòng)態(tài)范圍,8 DAC: 108dB 動(dòng)態(tài)范圍
次要屬性: 分時(shí)復(fù)用(TDM),SPI 接口
已供物品:
Data Sheet
AD1938
Rev. E | 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 DVDD supply
Input voltage high
2.0 V
Input voltage low
0.8 V
1 Functionally guaranteed at 40°C to +125°C case temperature.
ANALOG PERFORMANCE SPECIFICATIONS
Specifications guaranteed at an ambient temperature of 25°C.
Table 1.
Parameter
Conditions
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)
98
102
dB
With A-Weighted Filter (RMS)
100
105
dB
Total Harmonic Distortion + Noise
1 dBFS
96
87
dB
Full-Scale Input Voltage (Differential)
1.9
V rms
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)
98
104
dB
With A-Weighted Filter (RMS)
100
106
dB
With A-Weighted Filter (Average)
108
dB
Total Harmonic Distortion + Noise
0 dBFS
Single-Ended Version
Two channels running
92
dB
Single-Ended Version
Eight channels running
86
75
dB
Full-Scale Output Voltage
0.88 (2.48)
V rms (V p-p)
Gain Error
10
+10
%
Interchannel Gain Mismatch
0.2
+0.2
dB
Offset Error
25
4
+25
mV
Gain Drift
30
+30
ppm/°C
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