At TA = –40°C to +85°C, fS " />
參數(shù)資料
型號： ADS7825UB/1K
廠商： Texas Instruments
文件頁數(shù)： 12/21頁
文件大?。?/td> 0K
描述： IC 16-BIT 4-CHAN MUX A/D 28-SOIC
產(chǎn)品培訓模塊： Data Converter Basics
標準包裝： 1,000
位數(shù)： 16
采樣率（每秒）： 40k
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）： 50mW
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-SOIC（0.295"，7.50mm 寬）
供應商設(shè)備封裝： 28-SOIC
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 4 個單端，雙極
2
ADS7825
SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, fS = 40kHz, VS1 = VS2 = VS = +5V ±5%, using external reference, CONTC = 0V, unless otherwise specified.
ADS7825P, U
ADS7825PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
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.
RESOLUTION
16
T(1)
Bits
ANALOG INPUT
Voltage Range
±10V
T
V
Impedance
Channel On or Off
45.7
T
k
Capacitance
35
T
pF
THROUGHPUT SPEED
Conversion Time
20
T
s
Acquisition Time
5
T
s
Multiplexer Settling Time
Includes Acquisition
5
T
s
Complete Cycle (Acquire and Convert)
25
T
s
Complete Cycle (Acquire and Convert)
CONTC = +5V
40
T
s
Throughput Rate
40
T
kHz
DC ACCURACY
Integral Linearity Error
±3
±2
LSB(2)
No Missing Codes
15
16
Transition Noise(3)
0.8
T
LSB
Full Scale Error(4)
Internal Reference
±0.5
±0.25
%
Full Scale Error Drift
Internal Reference
±7
±5
ppm/
°C
Full Scale Error(4)
±0.5
±0.25
%
Full Scale Error Drift
±2
T
ppm/
°C
Bipolar Zero Error
±10
T
mV
Bipolar Zero Error Drift
±2
T
ppm/
°C
Channel-to-Channel Mismatch
±0.1
%
Power Supply Sensitivity
+4.75 < VS < +5.25
±8
T
LSB
AC ACCURACY
Spurious-Free Dynamic Range(5)
fIN = 1kHz
90
T
dB
Total Harmonic Distortion
fIN = 1kHz
–90
T
dB
Signal-to-(Noise+Distortion)
fIN = 1kHz
83
86
dB
Signal-to-Noise
fIN = 1kHz
83
86
dB
Channel Separation(6)
fIN = 1kHz
100
120
TT
dB
–3dB Bandwidth
2
T
MHz
Useable Bandwidth(7)
90
T
kHz
SAMPLING DYNAMICS
Aperture Delay
40
T
ns
Transient Response(8)
FS Step
5
T
s
Overvoltage Recovery(9)
1
T
s
REFERENCE
Internal Reference Voltage
2.48
2.5
2.52
TT
T
V
Internal Reference Source Current
1
T
A
(Must use external buffer)
External Reference Voltage Range
2.3
2.5
2.7
TT
T
V
for Specified Linearity
External Reference Current Drain
VREF = +2.5V
100
T
A
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
TT
V
VIH
+2.4
VS +0.3V
TT
V
IIL
±10
T
A
IIH
±10
T
A
DIGITAL OUTPUTS
Data Format
Parallel in two bytes; Serial
T
Data Coding
Binary Two's Complement
T
VOL
ISINK = 1.6mA
+0.4
T
V
VOH
ISOURCE = 500A+4
T
V
Leakage Current
High-Z State, VOUT = 0V to VS
±5
T
A
Output Capacitance
High-Z State
15
T
pF
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