參數(shù)資料
型號： AD7921AUJ-REEL7
廠商： ANALOG DEVICES INC
元件分類： ADC
英文描述： 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs
中文描述： 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
封裝： MO-193BA, TSOT-23
文件頁數(shù)： 5/28頁
文件大小： 312K
代理商： AD7921AUJ-REEL7
AD7911/AD7921
AD7921 SPECIFICATIONS
Temperature range for A Grade from 40°C to +85°C.
V
DD
= 2.35 V to 5.25 V, f
SCLK
= 5 MHz, f
SAMPLE
= 250 kSPS; T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
Signal-to-Noise and Distortion (SINAD)
2
Signal-to-Noise Ratio (SNR)
2
Total Harmonic Distortion (THD)
2
Peak Harmonic or Spurious Noise (SFDR)
2
Intermodulation Distortion (IMD)
2
Second-Order Terms
Third-Order Term
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
2
Full Power Bandwidth
DC ACCURACY
Resolution
Integral Nonlinearity
2
Differential Nonlinearity
2
Offset Error
2
Offset Error Match
2, 3
Gain Error
2
Gain Error Match
2, 3
Total Unadjusted Error (TUE)
2
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
, SCLK Pin
Input Current, I
IN
, CS Pin
Input Current, I
IN
, DIN Pin
Input Capacitance, C
IN3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
3
Output Coding
See notes at end of table.
Rev. 0 | Page 5 of 28
A Grade
1
70
72
71
72.5
81
84
84
86
10
30
90
8.5
1.5
12
±1.5
0.9/+1.5
±1.5
±0.5
±0.5
± 2
±0.3
±1
±1.5
0 to V
DD
±0.3
20
0.7 (V
DD
)
2
0.3
0.2 (V
DD
)
0.8
±0.3
±0.3
±0.3
5
V
DD
0.2
0.2
±0.3
5
Unit
dB min
dB typ
dB min
dB typ
dB typ
dB typ
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB max
LSB typ
LSB max
LSB max
V
μA max
pF typ
V min
V min
V max
V max
V max
μA max
μA max
μA max
pF max
V min
V max
μA max
pF max
Test Conditions/Comments
f
IN
= 100 kHz sine wave
fa = 100.73 kHz, fb = 90.72 kHz
fa = 100.73 kHz, fb = 90.72 kHz
@ 3 dB
@ 0.1 dB
Guaranteed no missed codes to 12 bits
2.35 V ≤ V
DD
≤ 2.7 V
2.7 V < V
DD
≤ 5.25 V
V
DD
= 2.35 V
2.35 V < V
DD
≤ 2.7 V
2.7 V < V
DD
≤ 5.25 V
V
IN
= 0 V or V
DD
I
SOURCE
= 200 μA; V
DD
= 2.35 V to 5.25 V
I
SINK
= 200 μA
Straight (natural) binary
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