AD7911 查看數據表（PDF） - Analog Devices
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AD7911 Datasheet PDF : 28 Pages
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AD7911/AD7921
AD7921 SPECIFICATIONS
Temperature range for A Grade from −40°C to +85°C.
VDD = 2.35 V to 5.25 V, fSCLK = 5 MHz, fSAMPLE = 250 kSPS; TA = TMIN to TMAX, 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 Isolation2
Full Power Bandwidth
DC ACCURACY
Resolution
Integral Nonlinearity2
Differential Nonlinearity2
Offset Error2
Offset Error Match2, 3
Gain Error2
Gain Error Match2, 3
Total Unadjusted Error (TUE)2
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN, SCLK Pin
Input Current, IIN, CS Pin
Input Current, IIN, DIN Pin
Input Capacitance, CIN3
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance3
Output Coding
See notes at end of table.
A Grade1
Unit
70
dB min
72
dB typ
71
dB min
72.5
dB typ
−81
dB typ
−84
dB typ
−84
dB typ
−86
dB typ
10
ns typ
30
ps typ
−90
dB typ
8.5
MHz typ
1.5
MHz typ
12
±1.5
−0.9/+1.5
±1.5
±0.5
±0.5
±2
±0.3
±1
±1.5
Bits
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB max
LSB typ
LSB max
LSB max
0 to VDD
±0.3
20
V
μA max
pF typ
0.7 (VDD)
2
0.3
0.2 (VDD)
0.8
±0.3
±0.3
±0.3
5
V min
V min
V max
V max
V max
μA max
μA max
μA max
pF max
VDD − 0.2
V min
0.2
V max
±0.3
μA max
5
pF max
Straight (natural) binary
Test Conditions/Comments
fIN = 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 ≤ VDD ≤ 2.7 V
2.7 V < VDD ≤ 5.25 V
VDD = 2.35 V
2.35 V < VDD ≤ 2.7 V
2.7 V < VDD ≤ 5.25 V
VIN = 0 V or VDD
ISOURCE = 200 μA; VDD = 2.35 V to 5.25 V
ISINK = 200 μA
Rev. A | Page 5 of 28
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