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參數資料
型號: AD7658YSTZ-REEL
廠商: Analog Devices Inc
文件頁數: 28/32頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 6CH 250KSPS 64LQFP
標準包裝: 1,500
位數: 12
采樣率(每秒): 250k
數據接口: 串行,并聯
轉換器數目: 6
功率耗散(最大): 143mW
電壓電源: 模擬和數字,雙 ±
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-LQFP(10x10)
包裝: 帶卷 (TR)
輸入數目和類型: 6 個單端,雙極
配用: EVAL-AD7658CBZ-ND - BOARD EVAL FOR AD7658
Data Sheet
AD7656/AD7657/AD7658
Rev. D | Page 5 of 32
AD7657
VREF = 2.5 V internal/external, AVCC = 4.75 V to 5.25 V, DVCC = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V;
For ±4 × VREF range: VDD = 10 V to 16.5 V, VSS = 10 V to 16.5 V; For ±2 × VREF range: VDD = 5 V to 16.5 V, VSS = 5 V to 16.5 V;
fSAMPLE = 250 kSPS, TA = TMIN to TMAX, unless otherwise noted.1
Table 2.
Parameter
B Version1
Y Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 50 kHz sine wave
Signal-to-Noise + Distortion (SINAD)2
81.5
dB min
Signal-to-Noise Ratio (SNR)2
82.5
dB min
83.5
dB typ
Total Harmonic Distortion (THD)2
90
89
dB max
92
dB typ
Peak Harmonic or Spurious Noise (SFDR)2
100
dB typ
Intermodulation Distortion (IMD)2
fa = 50 kHz, fb = 49 kHz
Second-Order Terms
109
dB typ
Third-Order Terms
104
dB typ
Aperture Delay
10
ns max
Aperture Delay Matching
4
ns max
Aperture Jitter
35
ps typ
Channel-to-Channel Isolation2
100
dB typ
fIN on unselected channels up to 100 kHz
Full Power Bandwidth
12
MHz typ
@ 3 dB
2
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
14
Bits
No Missing Codes
14
Bits min
Integral Nonlinearity2
±1.5
LSB max
±1
LSB typ
Positive Full-Scale Error2
±0.75
% FSR max
±0.183% FSR typical
Positive Full-Scale Error Matching2
±0.3
% FSR max
Bipolar Zero-Scale Error2
±0.0305
% FSR max
±0.015 % FSR typical
Bipolar Zero-Scale Error Matching2
±0.0427
% FSR max
Negative Full-Scale Error2
±0.75
% FSR max
±0.183% FSR typical
Negative Full-Scale Error Matching2
±0.3
% FSR max
ANALOG INPUT
See Table 8 for min VDD/VSS for each range
Input Voltage Ranges
±4 × VREF
V
RNG bit/RANGE pin = 0
±2 × VREF
V
RNG bit/RANGE pin = 1
DC Leakage Current
±1
A max
Input Capacitance3
10
pF typ
±4 × VREF range when in track
14
pF typ
±2 × VREF range when in track
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
2.5/3
V min/max
DC Leakage Current
±1
A max
Input Capacitance3
18.5
pF typ
REFEN/DIS = 1
Reference Output Voltage
2.49/2.51
V min/max
Long-Term Stability
150
ppm typ
1,000 hours
Reference Temperature Coefficient
25
ppm/°C max
6
ppm/°C 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
A max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance (CIN)3
10
pF max
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