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參數(shù)資料
| 型號(hào)： | AD7457BRT-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | ADC |
| 英文描述： | Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23 |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | MO-178BA, SOT-23, 8 PIN |
| 文件頁(yè)數(shù)： | 14/20頁(yè) |
| 文件大?。?/td> | 532K |
| 代理商： | AD7457BRT-REEL7 |
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AD7457
Rev. A | Page 3 of 20
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
Test Conditions/Comments
B Version1
Unit
DYNAMIC PERFORMANCE
fIN = 30 kHz
Signal to Noise Ratio (SNR)2
71
dB min
Signal to (Noise + Distortion) (SINAD)2
70
dB min
Total Harmonic Distortion (THD)2
84 dB typ
75
dB max
Peak Harmonic or Spurious Noise2
86 dB typ
75
dB max
Intermodulation Distortion (IMD)2
fa = 25 kHz; fb = 35 kHz
Second-Order Terms
80
dB typ
Third-Order Terms
80
dB typ
Aperture Delay2
5
ns typ
Aperture Jitter2
50
ps typ
Full-Power Bandwidth2, 3
@ 3 dB
20
MHz typ
@ 0.1 dB
2.5
MHz typ
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity (INL)2
±1
LSB max
Differential Nonlinearity (DNL)2
Guaranteed no missed codes to 12 bits
±0.95
LSB max
Offset Error2
±4.5
LSB max
Gain Error2
±2
LSB max
ANALOG INPUT
Full-Scale Input Span
VIN+ VIN
VREF
V
Absolute Input Voltage
VIN+
VREF
V
VIN4
VDD = 2.7 V to 3.6 V
0.1 to +0.4
V
VDD = 4.75 V to 5.25 V
0.1 to +1.5
V
DC Leakage Current
±1
A max
Input Capacitance
When in track/hold
30/10
pF typ
REFERENCE INPUT
±1% tolerance for specified performance
2.5
V
DC Leakage Current
±1
A max
VREF Input Capacitance
When in track/hold
10/30
pF typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current, IIN
Typically 10 nA, VIN = 0 V or VDD
±1
A max
Input Capacitance, CIN6
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDD = 4.75 V to 5.25 V, ISOURCE = 200 A
2.8
V min
VDD = 2.7 V to 3.6 V, ISOURCE = 200 A
2.4
V min
Output Low Voltage, VOL
ISINK = 200 A
0.4
V max
Floating-State Leakage Current
±1
A max
Floating-State Output Capacitance6
10
pF max
Output Coding
Straight natural binary
CONVERSION RATE
Conversion Time
1.6 s with a 10 MHz SCLK
16
SCLK cycles
Track-and-Hold Acquisition Time2
1
s max
Throughput Rate
See the Serial Interface section
100
kSPS max
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