AD7457BRT-R2 查看數據表（PDF） - Analog Devices
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AD7457BRT-R2 Datasheet PDF : 20 Pages
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AD7457
SPECIFICATIONS
VDD = 2.7 V to 5.25 V, fSCLK = 10 MHz, fS = 100 kSPS, VREF = 2.5 V, TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
Signal to Noise Ratio (SNR)2
Signal to (Noise + Distortion) (SINAD)2
Total Harmonic Distortion (THD)2
Peak Harmonic or Spurious Noise2
Intermodulation Distortion (IMD)2
Second-Order Terms
Third-Order Terms
Aperture Delay2
Aperture Jitter2
Full-Power Bandwidth2, 3
DC ACCURACY
Resolution
Integral Nonlinearity (INL)2
Differential Nonlinearity (DNL)2
Offset Error2
Gain Error2
ANALOG INPUT
Full-Scale Input Span
Absolute Input Voltage
VIN+
VIN−4
DC Leakage Current
Input Capacitance
REFERENCE INPUT
VREF Input Voltage5
DC Leakage Current
VREF Input Capacitance
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN6
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance6
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time2
Throughput Rate
Test Conditions/Comments
fIN = 30 kHz
−84 dB typ
−86 dB typ
fa = 25 kHz; fb = 35 kHz
@ −3 dB
@ −0.1 dB
B Version1
71
70
−75
−75
−80
−80
5
50
20
2.5
Guaranteed no missed codes to 12 bits
12
±1
±0.95
±4.5
±2
VIN+ − VIN−
VREF
VDD = 2.7 V to 3.6 V
VDD = 4.75 V to 5.25 V
When in track/hold
VREF
−0.1 to +0.4
−0.1 to +1.5
±1
30/10
±1% tolerance for specified performance
When in track/hold
2.5
±1
10/30
2.4
0.8
Typically 10 nA, VIN = 0 V or VDD
±1
10
VDD = 4.75 V to 5.25 V, ISOURCE = 200 µA
VDD = 2.7 V to 3.6 V, ISOURCE = 200 µA
ISINK = 200 µA
2.8
2.4
0.4
±1
10
Straight natural binary
1.6 µs with a 10 MHz SCLK
16
1
See the Serial Interface section
100
Unit
dB min
dB min
dB max
dB max
dB typ
dB typ
ns typ
ps typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
V
V
V
V
µA max
pF typ
V
µA max
pF typ
V min
V max
µA max
pF max
V min
V min
V max
µA max
pF max
SCLK cycles
µs max
kSPS max
Rev. A | Page 3 of 20
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