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參數(shù)資料
型號(hào): AD7707BRU
廠商: Analog Devices Inc
文件頁(yè)數(shù): 45/52頁(yè)
文件大?。?/td> 0K
描述: IC ADC 16BIT 3CH 20-TSSOP
標(biāo)準(zhǔn)包裝: 75
位數(shù): 16
采樣率(每秒): 500
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): 1mW
電壓電源: 模擬和數(shù)字
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: 1 個(gè)單端,單極;1 個(gè)單端,雙極;2 個(gè)偽差分,單極;2 個(gè)偽差分,雙極
AD7707
Rev. B | Page 5 of 52
Parameter
B Version1
Unit
Conditions/Comments
Common-Mode 60 Hz Rejection2
150
dB typ
For filter notches of 10 Hz, 20 Hz, 60 Hz, ±0.02 × fNOTCH
Absolute/Common-Mode REF IN Voltage2
AGND to AVDD
V min to V max
Absolute/Common-Mode AIN Voltage2, 10
AGND – 100 mV
V min
BUF bit of setup register = 0
AVDD + 30 mV
V max
AGND + 50 mV
V min
BUF bit of setup register = 1
AVDD 1.5 V
V max
AIN DC Input Current2
1
nA max
AIN Sampling Capacitance2
10
pF max
BUF = 0
AIN Differential Voltage Range11, 12
0 to +VREF/gain
V nom
Unipolar input range (
B/U bit of setup register = 1)
±VREF/gain
V nom
Bipolar input range (
B/U bit of setup register = 0)
AIN Input Sampling Rate, fS
Gain × fCLKIN/64
Hz nom
For gains of 1 to 4
fCLKIN/8
For gains of 8 to 128
Reference Input Range
REF IN(+) REF IN() Voltage
1/1.75
V min/max
AVDD = 2.7 V to 3.3 V; VREF = 1.225 V ± 1% for
specified performance
REF IN(+) REF IN() Voltage
1/3.5
V min/max
AVDD = 4.75 V to 5.25 V; VREF = 2.5 V ± 1% for
specified performance
REF IN Input Sampling Rate, fS
fCLKIN/64
±100 mV INPUT RANGE
Low level input channels, AIN1 and AIN2; gain = 16,
unbuffered mode
±0.003
% of FSR max
Filter notch < 60 Hz
Input Common-Mode Rejection (CMR)2
80
dB typ
Power Supply Rejection (PSR)2
90
dB typ
HIGH LEVEL ANALOG INPUT CHANNEL (AIN3)
AIN3 is with respect to HICOM
AIN3 Voltage Range
+10
V max
10
V min
Normal Mode 50 Hz Rejection
78
dB typ
For filter notches of 10 Hz, 25 Hz, 50 Hz; ±0.02 × fNOTCH
Normal Mode 60 Hz Rejection
78
dB typ
For filter notches of 10 Hz, 20 Hz, 60 Hz; ±0.02 × fNOTCH
AIN3 Input Sampling Rate, fS
Gain × fCLKIN/64
Hz nom
For gains of 1 to 4
fCLKIN/8
Hz nom
For gains of 8 to 128
AIN3 Input Impedance2
27
kΩ min
Typically 30 kΩ ± 10%; typical resistor
Tempco is 30 ppm/°C
AIN3 Sampling Capacitance2
10
pF max
VBIAS Input Range
0 V/AVDD
V min/max
Typically REFIN(+) = 2.5 V
LOGIC INPUTS
Input Current
All Inputs Except MCLK IN
±1
μA max
Typically ±20 nA
MCLK
±10
μA max
Typically ±2 m A
All Inputs Except SCLK and MCLK IN
VINL, Input Low Voltage
0.8
V max
DVDD = 5 V
0.4
V max
DVDD = 3 V
VINH, Input High Voltage
2.0
V max
DVDD = 3 V and 5 V
SCLK Only (Schmitt Triggered Input)
DVDD = 5 V nominal
VT+
1.4/3
V min/V max
VT
0.8/1.4
V min/V max
VT+ VT
0.4/0.8
V min/V max
SCLK Only (Schmitt Triggered Input)
DVDD = 3 V nominal
VT+
1/2.5
V min/V max
VT
0.4/1.1
V min/V max
VT+ VT
0.375/0.8
V min /V max
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