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參數(shù)資料
型號(hào): AD7490BRUZ-REEL
廠商: Analog Devices Inc
文件頁(yè)數(shù): 24/29頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT 16CHAN 28TSSOP
產(chǎn)品變化通告: IDD Specification Change 17/Jun/2009
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 12
采樣率(每秒): 1M
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): 12.5mW
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: 28-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 28-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 16 個(gè)單端,單極
Data Sheet
AD7490
Rev. D | Page 3 of 28
SPECIFICATIONS
VDD = VDRIVE = 2.7 V to 5.25 V, REFIN = 2.5 V, fSCLK1 = 20 MHz, TA = TMIN to TMAX, unless otherwise noted. Temperature range (B Version):
40°C to +85°C.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
fIN = 50 kHz sine wave, fSCLK = 20 MHz
Signal-to-(Noise + Distortion) (SINAD)2
VDD = 5 V
69
70.5
dB
VDD = 3 V
68
69.5
dB
Signal-to-Noise Ratio (SNR)2
69.5
dB
Total Harmonic Distortion (THD)2
VDD = 5 V
84
74
dB
VDD = 3 V
77
71
dB
Peak Harmonic or Spurious Noise (SFDR)2
VDD = 5 V
86
75
dB
VDD = 3 V
80
73
dB
Intermodulation Distortion (IMD)2
fa = 40.1 kHz, fb = 41.5 kHz
Second-Order Terms
85
dB
Third-Order Terms
85
dB
Aperture Delay
10
ns
Aperture Jitter
50
ps
Channel-to-Channel Isolation2
fIN = 400 kHz
82
dB
Full Power Bandwidth
3 dB
8.2
MHz
0.1 dB
1.6
MHz
DC ACCURACY2
Resolution
12
Bits
Integral Nonlinearity
±1
LSB
Differential Nonlinearity
Guaranteed no missed codes to 12 bits
0.95/+1.5
LSB
0 V to REFIN Input Range
Straight binary output coding
Offset Error
±0.6
±8
LSB
Offset Error Match
±0.5
LSB
Gain Error
±2
LSB
Gain Error Match
±0.6
LSB
0 V to 2 × REFIN Input Range
REFIN to +REFIN biased about REFIN
with twos complement output coding
offset
Positive Gain Error
±2
LSB
Positive Gain Error Match
±0.5
LSB
Zero Code Error
±0.6
±8
LSB
Zero Code Error Match
±0.5
LSB
Negative Gain Error
±1
LSB
Negative Gain Error Match
±0.5
LSB
ANALOG INPUT
Input Voltage Range
RANGE bit set to 1
0
REFIN
V
RANGE bit set to 0, VDD = 4.75 V to 5.25 V
for 0 V to 2 × REFIN
0
2 × REFIN
V
DC Leakage Current
±1
A
Input Capacitance
20
pF
REFERENCE INPUT
REFIN Input Voltage
±1% specified performance
2.5
V
DC Leakage Current
±1
A
REFIN Input Impedance
fSAMPLE = 1 MSPS
36
k
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