ELECTRICAL CHARACTERISTICS: AVDD = 3V All sp" />
參數(shù)資料
型號: ADS1241MEVM
廠商: Texas Instruments
文件頁數(shù): 25/30頁
文件大?。?/td> 0K
描述: EVALUATION MODULE FOR ADS1241M
產(chǎn)品培訓(xùn)模塊: Data Converter Basics
視頻文件: Nuts and Bolts of the Delta-Sigma Converter
標準包裝: 1
ADC 的數(shù)量: 1
位數(shù): 24
采樣率(每秒): 15
數(shù)據(jù)接口: SPI?
輸入范圍: 0 ~ 2.5 V
在以下條件下的電源(標準): 0.6mW @ 3V
工作溫度: -40°C ~ 85°C
已用 IC / 零件: ADS1241M
已供物品:
產(chǎn)品目錄頁面: 889 (CN2011-ZH PDF)
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其它名稱: 296-18358
ADS1240, 1241
4
SBAS173F
www.ti.com
ELECTRICAL CHARACTERISTICS: AVDD = 3V
All specifications –40
°C to +85°C, AV
DD = +3V, DVDD = +2.7V to 5.25V, fMOD = 19.2kHz, PGA = 1, Buffer ON, fDATA = 15Hz, and VREF = +1.25V, unless otherwise specified.
ADS1240
ADS1241
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT (AIN0 – AIN7, AINCOM)
Analog Input Range
Buffer OFF
AGND – 0.1
AVDD + 0.1
V
Buffer ON
AGND + 0.05
AVDD – 1.5
V
Full-Scale Input Voltage Range
(In+) – (In–) See Block Diagram, RANGE = 0
±V
REF /PGA
V
RANGE = 1
±V
REF /(2 PGA)
V
Input Impedance
Buffer OFF
5/PGA
M
Differential
Buffer ON
5
G
Bandwidth
fDATA = 3.75Hz
–3dB
1.65
Hz
fDATA = 7.50Hz
–3dB
3.44
Hz
fDATA = 15.00Hz
–3dB
14.6
Hz
Programmable Gain Amplifier
User-Selectable Gain Ranges
1
128
Input Capacitance
9pF
Input Leakage Current
Modulator OFF, T = 25
°C5
pA
Burnout Current Sources
2
A
OFFSET DAC
Offset DAC Range
RANGE = 0
±V
REF /(2 PGA)
V
RANGE = 1
±V
REF /(4 PGA)
V
Offset DAC Monotonicity
8
Bits
Offset DAC Gain Error
±10
%
Offset DAC Gain Error Drift
2
ppm/
°C
SYSTEM PERFORMANCE
Resolution
No Missing Codes
24
Bits
Integral Nonlinearity
End Point Fit
±0.0015
% of FS
Offset Error(1)
15
ppm of FS
Offset Drift(1)
0.04
ppm of FS/
°C
Gain Error
0.01
%
Gain Error Drift(1)
1.0
ppm/
°C
Common-Mode Rejection
at DC
100
dB
fCM = 60Hz, fDATA = 15Hz
130
dB
fCM = 50Hz, fDATA = 15Hz
120
dB
Normal-Mode Rejection
fSIG = 50Hz, fDATA = 15Hz
100
dB
fSIG = 60Hz, fDATA = 15Hz
100
dB
Output Noise
See Typical Characteristics
Power-Supply Rejection
at DC, dB = –20 log(
V
OUT /VDD)
(2)
75
90
dB
VOLTAGE REFERENCE INPUT
VREF
VREF ≡ (REF IN+) – (REF IN–), RANGE = 0
0.1
1.25
1.30
V
Reference Input Range
REF IN+, REF IN–
0
AVDD
V
RANGE = 1
0.1
2.5
2.6
V
Common-Mode Rejection
at DC
120
dB
Common-Mode Rejection
fVREFCM = 60Hz, fDATA = 15Hz
120
dB
Bias Current(3)
VREF = 1.25
0.65
A
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage
AVDD
2.7
3.3
V
Analog Current
PDWN = 0, or SLEEP
1
nA
PGA = 1, Buffer OFF
107
225
A
PGA = 128, Buffer OFF
355
600
A
PGA = 1, Buffer ON
118
275
A
PGA = 128, Buffer ON
483
1225
A
Digital Current
Normal Mode, DVDD = 3V
50
100
A
SLEEP Mode, DVDD = 3V
40
A
Read Data Continuous Mode, DVDD = 3V
113
A
PDWN = 0
0.5
nA
Power Dissipation
PGA = 1, Buffer OFF, DVDD = 3V
0.6
1.2
mW
NOTES: (1) Calibration can minimize these errors to the level of the noise.
(2)
V
OUT is a change in digital result.
(3) 12pF switched capacitor at fSAMP clock frequency.
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