參數(shù)資料
型號: AD7631BCPZRL
廠商: Analog Devices Inc
文件頁數(shù): 27/32頁
文件大?。?/td> 0K
描述: IC ADC 18BIT 250KSPS BIP 48LFCSP
標準包裝: 2,500
系列: PulSAR®
位數(shù): 18
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 120mW
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: 48-VFQFN 裸露焊盤,CSP
供應商設備封裝: 48-LFCSP-VQ(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個差分,單極;1 個差分,雙極
AD7631
Data Sheet
Rev. B | Page 4 of 32
Parameter
Conditions/Comments
Min
Typ
Max
Unit
INTERNAL REFERENCE
PDREF = PDBUF = low
Output Voltage
REF @ 25°C
4.965
5.000
5.035
V
Temperature Drift
–40°C to +85°C
±3
ppm/°C
Line Regulation
AVDD = 5 V ± 5%
±15
ppm/V
Long-Term Drift
1000 hours
50
ppm
Turn-On Settling Time
CREF = 22 μF
10
ms
REFERENCE BUFFER
PDREF = high
REFBUFIN Input Voltage Range
2.4
2.5
2.6
V
EXTERNAL REFERENCE
PDREF = PDBUF = high
Voltage Range
REF
4.75
5
AVDD + 0.1
V
Current Drain
250 kSPS throughput
250
μA
TEMPERATURE PIN
Voltage Output
@ 25°C
311
mV
Temperature Sensitivity
1
mV/°C
Output Resistance
4.33
DIGITAL INPUTS
Logic Levels
VIL
0.3
+0.6
V
VIH
2.1
OVDD + 0.3
V
IIL
1
+1
μA
IIH
1
+1
μA
DIGITAL OUTPUTS
Data Format
Parallel or serial 18-bit
Pipeline Delay5
VOL
ISINK = 500 μA
0.4
V
VOH
ISOURCE = 500 μA
OVDD 0.6
V
POWER SUPPLIES
Specified Performance
AVDD
5
5.25
V
DVDD
4.75
5
5.25
V
OVDD
2.7
5.25
V
VCC
7
15
15.75
V
VEE
15.75
15
0
V
Operating Current7
@ 250 kSPS throughput
AVDD
With Internal Reference8
8.5
mA
With Internal Reference Disabled8
6.1
mA
DVDD
4
mA
OVDD
0.1
mA
VCC
VCC = 15 V, with internal reference buffer
1.4
mA
VCC = 15 V
0.8
mA
VEE
VEE = 15 V
0.7
mA
Power Dissipation
@ 250 kSPS throughput
With Internal Reference8
94
120
mW
With Internal Reference Disabled8
73
100
mW
In Power-Down Mode9
PD = high
10
μW
TEMPERATURE RANGE10
Specified Performance
TMIN to TMAX
40
+85
°C
1 In all input ranges, the input current scales with throughput. See the Analog Inputs section.
2 Linearity is tested using endpoints, not best fit. All linearity is tested with an external 5 V reference.
3 LSB means least significant bit. All specifications in LSB do not include the error contributed by the reference.
4 All specifications in decibels are referred to a full-scale range input, FSR. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
5 Conversion results are available immediately after completed conversion.
6 4.75 V or VREF 0.1 V, whichever is larger.
7 Tested in parallel reading mode.
8 With internal reference, PDREF = PDBUF = low; with internal reference disabled, PDREF = PDBUF = high. With internal reference buffer, PDBUF = low.
9 With all digital inputs forced to OVDD.
10 Consult sales for extended temperature range.
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