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參數(shù)資料
型號(hào): AD7927BRU
廠商: Analog Devices Inc
文件頁(yè)數(shù): 22/28頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT 8CH 200KSPS 20TSSOP
標(biāo)準(zhǔn)包裝: 75
位數(shù): 12
采樣率(每秒): 200k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 7.5mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
輸入數(shù)目和類型: 8 個(gè)單端,單極
配用: EVAL-AD7927CBZ-ND - BOARD EVALUATION FOR AD7927
Data Sheet
AD7927
Rev. D | Page 3 of 28
SPECIFICATIONS
AVDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK = 20 MHz; TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
B Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 50 kHz sine wave, fSCLK = 20 MHz
Signal-to-(Noise + Distortion) (SINAD)2
70
69.5
dB min
@ 5 V, B models
@ 5 V, W models
69
dB min
@ 3 V Typically 70 dB
Signal-to-Noise Ratio (SNR)2
70
69.5
dB min
B models
W models
Total Harmonic Distortion (THD) 2
77
dB max
@ 5 V Typically 84 dB
73
dB max
@ 3 V Typically 77 dB
Peak Harmonic or Spurious Noise
78
dB max
@ 5 V Typically 86 dB
76
dB max
@ 3 V Typically 80 dB
Intermodulation Distortion (IMD)2
fA = 40.1 kHz, fB = 41.5 kHz
Second-Order Terms
90
dB typ
Third-Order Terms
90
dB typ
Aperture Delay
10
ns typ
Aperture Jitter
50
ps typ
Channel-to-Channel Isolation2
82
dB typ
fIN = 400 kHz
Full Power Bandwidth
8.2
MHz typ
@ 3 dB
1.6
MHz typ
@ 0.1 dB
DC ACCURACY2
Resolution
12
Bits
Integral Nonlinearity
±1
LSB max
Differential Nonlinearity
0.9/+1.5
LSB max
Guaranteed no missed codes to 12 bits
0 V to REFIN Input Range
Straight binary output coding
Offset Error
±8
LSB max
Typically ±0.5 LSB
Offset Error Match
±0.5
LSB max
Gain Error
±1.5
LSB max
Gain Error Match
±0.5
LSB max
0 V to 2 × REFIN Input Range
REFIN to +REFIN biased about REFIN with
Positive Gain Error
±1.5
LSB max
Twos complement output coding
Positive Gain Error Match
±0.5
LSB max
Zero Code Error
±8
LSB max
Typically ±0.8 LSB
Zero Code Error Match
±0.5
LSB max
Negative Gain Error
±1
LSB max
Negative Gain Error Match
±0.5
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REFIN
V
RANGE bit set to 1
0 to 2 × REFIN
V
RANGE bit set to 0, AVDD/VDRIVE = 4.75 V to 5.25 V
DC Leakage Current
±1
μA max
Input Capacitance
20
pF typ
fSAMPLE = 200 kSPS
REFERENCE INPUT
REFIN Input Voltage
2.5
V
±1% specified performance
DC Leakage Current
±1
μA max
REFIN Input Impedance
36
kΩ typ
LOGIC INPUTS
Input High Voltage, VINH
0.7 × VDRIVE
V min
Input Low Voltage, VINL
0.3 × VDRIVE
V max
Input Current, IIN
±1
μA max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance, CIN3
10
pF max
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