At TA = –40°C to +85°C, +VCC
參數(shù)資料
型號： ADS7818EB/250
廠商： Texas Instruments
文件頁數(shù)： 12/21頁
文件大?。?/td> 0K
描述： IC 12-BIT 500KHZ A/D CONV 8-MSOP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 12
采樣率（每秒）： 500k
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 20mW
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： 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 8-MSOP
包裝： 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型： 1 個差分，單極
產(chǎn)品目錄頁面： 891 (CN2011-ZH PDF)
配用： 296-19913-ND - EVAL MOD FOR ADS7818
其它名稱： ADS7818EBDKR
2
ADS7818
SPECIFICATIONS
At TA = –40°C to +85°C, +VCC = +5V, fSAMPLE = 500kHz, fCLK = 16 fSAMPLE, internal reference, unless otherwise specified.
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.
ADS7818P, E
ADS7818PB, EB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Span(1)
+In – (–In)
0
5
TT
V
Absolute Input Range
+In
–0.2
VCC +0.2
TT
V
–In
–0.2
+0.2
TT
V
Capacitance
15
T
pF
Leakage Current
1
T
A
SYSTEM PERFORMANCE
Resolution
12
T
Bits
No Missing Codes
12
T
Bits
Integral Linearity Error
±1
±2
±0.5
±1
LSB(2)
Differential Linearity Error
±0.8
±0.5
±1
LSB
Offset Error
±2
±5
±1
T
LSB
Gain Error(3)
25
°C
±12
±30
±7
±15
LSB
–40
°C to +85°C
±50
±35
LSB
Common-Mode Rejection
DC, 0.2Vp-p
70
T
dB
1MHz, 0.2Vp-p
50
T
dB
Noise
150
T
Vrms
Power Supply Rejection
Worst Case
, +V
CC = 5V ±5%
1.2
T
LSB
SAMPLING DYNAMICS
Conversion Time
1.625
T
s
Acquisition Time
0.350
T
s
Throughput Rate
500
T
kHz
Aperture Delay
5
T
ns
Aperture Jitter
30
T
ps
Step Response
350
T
ns
DYNAMIC CHARACTERISTICS
Signal-to-Noise Ratio
VIN = 5Vp-p at 100kHz
72
T
dB
Total Harmonic Distortion(4)
VIN = 5Vp-p at 100kHz
–78
–72
–82
–75
dB
Signal-to-(Noise+Distortion)
VIN = 5Vp-p at 100kHz
68
70
72
dB
Spurious Free Dynamic Range
VIN = 5Vp-p at 100kHz
72
78
75
82
dB
Usable Bandwidth
SINAD > 68dB
350
T
kHz
REFERENCE OUTPUT
Voltage
IOUT = 0
2.475
2.50
2.525
2.48
T
2.52
V
Source Current(5)
Static Load
50
T
A
Drift
IOUT = 0
20
T
ppm /
°C
Line Regulation
4.75V
≤ V
CC ≤ 5.25V
0.6
T
mV
REFERENCE INPUT
Range
2.0
2.55
TT
V
Resistance(6)
to Internal Reference Voltage
10
TT
T
k
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
T
Logic Levels:
VIH
|IIH| ≤ +5A
3.0
VCC +0.3
TT
V
VIL
|IIL| ≤ +5A
–0.3
0.8
TT
V
VOH
IOH = –500A
3.5
TT
V
VOL
IOL = 500A
0.4
TT
V
Data Format
Straight Binary
T
POWER SUPPLY REQUIREMENT
+VCC
Specified Performance
4.75
5.25
TT
V
Quiescent Current
fSAMPLE = 500kHz
2.2
T
mA
Power Down
0.5
T
mA
Power Dissipation
fSAMPLE = 500kHz
11
20
TT
mW
Power Down
2.5
T
mW
TEMPERATURE RANGE
Specified Performance
–40
+85
TT
°C
T Specifications same as ADS7818P,E.
NOTES: (1) Ideal input span, does not include gain or offset error. (2) LSB means Least Significant Bit, with VREF equal to +2.5V, one LSB is 1.22mV. (3) Measured
relative to an ideal, full-scale input (+In – (–In)) of 4.999V. Thus, gain error includes the error of the internal voltage reference. (4) Calculated on the first nine
harmonics of the input frequency. (5) If the internal reference is required to source current to an external load, the reference voltage will change due to the internal
10k
resistor. (6) Can vary ±30%.
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