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ADS1147IPW Datasheet(PDF) 4 Page - Texas Instruments

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No. de pieza ADS1147IPW
Descripción Electrónicos  16-Bit Analog-to-Digital Converters for Temperature Sensors
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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ADS1147IPW Datasheet(HTML) 4 Page - Texas Instruments

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ADS1146
ADS1147
ADS1148
SBAS453F – JULY 2009 – REVISED APRIL 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Minimum/maximum specifications apply from –40°C to +105°C. Typical specifications are at +25°C. All specifications at
AVDD = +5V, DVDD = +3.3V, AVSS = DGND = 0V, VREF = +2.048V, and oscillator frequency = 4.096MHz, unless otherwise
noted.
ADS1146, ADS1147, ADS1148
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT SOURCES (IDACS)
50, 100, 250,
Output current
500, 750, 1000,
μA
1500
Voltage compliance
All currents
AVDD – 0.7
V
Initial error
All currents, each IDAC
–6
±1.0
6
% of FS
Initial mismatch
All currents, between IDACs
±0.03
% of FS
Temperature drift
Each IDAC
200
ppm/°C
Temperature drift matching
Between IDACs
10
ppm/°C
SYSTEM MONITORS
Voltage
TA = +25°C
118
mV
Temperature
sensor reading
Drift
405
μV/°C
GENERAL-PURPOSE INPUT/OUTPUT (GPIO)
VIH
0.7AVDD
AVDD
V
VIL
AVSS
0.3AVDD
V
Logic levels
VOH
IOH = 1mA
0.8AVDD
V
VOL
IOL = 1mA
AVSS
0.2 AVDD
V
DIGITAL INPUT/OUTPUT (other than GPIO)
VIH
0.7DVDD
DVDD
V
VIL
DGND
0.3DVDD
V
Logic levels
VOH
IOH = 1mA
0.8DVDD
V
VOL
IOL = 1mA
DGND
0.2 DVDD
V
Input leakage
DGND < VDIGITAL IN < DVDD
±10
μA
Frequency
1
4.5
MHz
Clock input
(CLK)
Duty cycle
25
75
%
Internal oscillator frequency
3.89
4.096
4.3
MHz
POWER SUPPLY
DVDD
2.7
5.25
V
AVSS
–2.5
0
V
AVDD
AVSS + 2.7
AVSS + 5.25
V
Normal mode, DVDD = 5V,
230
μA
data rate = 20SPS, internal oscillator
DVDD current
Normal mode, DVDD = 3.3V,
210
μA
data rate = 20SPS, internal oscillator
Sleep mode
0.2
µA
Converting, AVDD = 5V,
225
µA
data rate = 20SPS, external reference
Converting, AVDD = 3.3V,
212
µA
data rate = 20SPS, external reference
AVDD current
Sleep mode
0.1
µA
Additional current with internal reference
180
μA
enabled
AVDD = DVDD = 5V, data rate = 20SPS,
2.3
mW
external reference, internal oscillator
Power dissipation
AVDD = DVDD = 3.3V, data rate = 20SPS,
1.4
mW
external reference, internal oscillator
TEMPERATURE RANGE
Specified
–40
+105
°C
Operating
–40
+125
°C
Storage
–60
+150
°C
4
Copyright © 2009–2012, Texas Instruments Incorporated


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