參數(shù)資料
型號： ADS7812UB
英文描述： Low-Power, Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
中文描述： 低功耗，串行12位采樣模擬到數(shù)字轉(zhuǎn)換器
文件頁數(shù)： 2/17頁
文件大小： 381K
代理商： ADS7812UB
2
ADS7812
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
SPECIFICATIONS
At T
A
= –40
°
C to +85
°
C, f
S
= 40kHz, V
S
= +5V
±
5%, using internal reference, unless otherwise specified.
ADS7812P, U
ADS7812PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
RESOLUTION
12
6
Bits
ANALOG INPUT
Voltage Range
Impedance
Capacitance
See Table I
See Table I
35
6
6
6
pF
THROUGHPUT SPEED
Conversion Time
Complete Cycle
Throughput Rate
20
25
6
6
μ
s
μ
s
kHz
Acquire and Convert
40
6
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise
(2)
Full Scale Error
(3)
Full Scale Error Drift
Full Scale Error
(3)
Full Scale Error Drift
Bipolar Zero Error
Bipolar Zero Error Drift
Unipolar Zero Error
Unipolar Zero Error Drift
Recovery Time to Rated Accuracy
from Power Down
(4)
Power Supply Sensitivity
0.1
0.1
±
1
±
1
6
6
6
6
±
0.5
±
0.5
LSB
(1)
LSB
Guaranteed
0.05
LSB
%
ppm/
°
C
%
ppm/
°
C
mV
ppm/
°
C
mV
ppm/
°
C
μ
s
±
0.5
±
0.25
±
14
6
Ext. 2.5000V Ref
Ext. 2.5000V Ref
Bipolar Ranges
Bipolar Ranges
Unipolar Ranges
Unipolar Ranges
1.0
μ
F Capacitor to CAP
±
0.5
±
0.25
±
5
6
±
10
6
±
3
6
±
6
6
±
3
300
6
6
+4.75V < (V
S
= +5V) < +5.25
±
0.75
6
LSB
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Useable Bandwidth
(6)
Full Power –3dB Bandwidth
f
IN
= 1kHz
f
IN
= 1kHz
f
IN
= 1kHz
f
IN
= 1kHz
80
98
–96
74
74
130
600
6
6
6
6
6
6
6
dB
(5)
dB
dB
dB
kHz
kHz
–80
6
70
70
72
72
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Overvoltage Recovery
(7)
40
20
5
750
6
6
6
6
ns
ps
μ
s
ns
FS Step
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
Internal Reference Drift
External Reference Voltage Range
External Reference Current Drain
2.48
2.5
100
8
2.5
2.52
6
6
6
6
6
6
V
μ
A
ppm/
°
C
V
μ
A
2.3
2.7
100
6
6
6
V
REF
= +2.5V
DIGITAL INPUTS
Logic Levels
V
IL
V
IH
I
IL
I
IH
–0.3
+2.0
+0.8
6
6
6
6
6
6
V
V
μ
A
μ
A
V
S
+0.3V
±
10
±
10
DIGITAL OUTPUTS
Data Format
Data Coding
V
OL
V
OH
Leakage Current
I
SINK
= 1.6mA
I
SOURCE
= 500
μ
A
High-Z State,
V
OUT
= 0V to V
S
+0.4
6
V
V
μ
A
+4
6
±
1
6
Output Capacitance
15
15
pF
Serial
Binary Two’s Complement
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7812UB/1K 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7812UB/1KE4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7812UB/1KG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Pwr Serial 12B Sampling ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7812UBE4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7812UBG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Pwr Serial 12B Sampling ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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