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ADS1254 Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza ADS1254
Descripción Electrónicos  24-Bit, 20kHz, Low Power ANALOG-TO-DIGITAL CONVERTER
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1254 Datasheet(HTML) 3 Page - Texas Instruments

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ADS1254
3
SBAS213B
www.ti.com
ADS1254E
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ELECTRICAL CHARACTERISTICS
All specifications at TMIN to TMAX, AVDD = +5V, DVDD = +1.8V. CLK = 8MHz, and VREF = 4.096, unless otherwise specified.
NOTE: (1) Applies to full-differential signals.
ANALOG INPUT
Input Voltage Range
AGND
±V
REF
V
Input Impedance
CLK = 3,840Hz
260
M
CLK = 1MHz
1
M
CLK = 8MHz
125
k
Input Capacitance
6pF
Input Leakage
At +25
°C5
50
pA
At TMIN to TMAX
1nA
DYNAMIC CHARACTERISTICS
Data Rate
20.8
kHz
Bandwidth
–3dB
4.24
kHz
Serial Clock (SCLK)
8
MHz
System Clock Input (CLK)
8
MHz
ACCURACY
Integral Non-Linearity(1)
±0.0002
±0.0015
% of FSR
THD
1kHz Input; 0.1dB below FS
105
dB
Noise
1.8
2.7
ppm of FSR, rms
Resolution
24
Bits
No Missing Codes
24
Bits
Common-Mode Rejection
60Hz, AC
90
102
dB
Gain Error
0.1
1
% of FSR
Offset Error
±30
±100
ppm of FSR
Gain Sensitivity to VREF
1:1
Power-Supply Rejection Ratio
70
88
dB
PERFORMANCE OVER TEMPERATURE
Offset Drift
0.07
ppm/
°C
Gain Drift
0.4
ppm/
°C
VOLTAGE REFERENCE
VREF
0.5
4.096
VDD
V
Load Current
32
µA
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
Logic Level: VIH
0.65 • DVDD
DVDD + 0.3
V
VIL
–0.3
0.35 • DVDD
V
VOH
IOH = –500µADVDD –0.4
V
VOL
IOL = 500µA
0.4
V
Input (SCLK, CLK, CHSEL0, CHSEL1) Hysteresis
0.6
V
Data Format
Offset Binary Two’s Complement
POWER-SUPPLY REQUIREMENTS
Power Supply Voltage
DVDD
1.8
3.6
VDC
AVDD
4.75
5
5.25
VDC
Quiescent Current
AVDD = +5V
0.8
1.15
mA
DVDD = +1.8V
0.2
0.4
mA
Operating Power
4.3
6.5
mW
Power-Down Current
0.4
1
µA
TEMPERATURE RANGE
Operating
–40
+85
°C
Storage
–60
+150
°C


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