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ADS7826 bảng dữ liệu(PDF) 4 Page - Texas Instruments

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ADS7826 bảng dữ liệu(HTML) 4 Page - Texas Instruments

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ADS7826
ADS7827
ADS7829
SLAS388 – JUNE 2003
SPECIFICATIONS (continued)
At -40
°C to 85°C, V
CC = 2.7 V, Vref = 2.5 V, unless otherwise specified.
ADS7829IB
ADS7829
ADS7826I
ADS7827I
TEST
PARAMETER
UNIT
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
VOH
IOH = -250 µA
2.2
2.1
2.1
2.1
V
VOL
IOL = 250 µA
0.4
0.4
0.4
0.4
V
Data format
Straight binary
Straight binary
Straight binary
Straight binary
POWER SUPPLY REQUIREMENTS
VCC
Operating range
2.7
3.6
2.7
3.6
2.7
3.6
2.7
3.6
V
See (3) and (2)
2.0
2.7
2.0
2.7
2.0
2.7
2.0
2.7
V
See (2)
3.6
5.25
3.6
5.25
3.6
5.25
3.6
5.25
V
Quiescent cur-
Full speed (4)
220
350
220
350
250
350
260
350
µA
rent
fSAMPLE = 7.5 kHz
20
20
20
20
µA
(5),
fSAMPLE = 7.5 kHz
180
180
180
180
µA
(6)
Power down
CS = VCC
3
3
3
3
µA
TEMPERATURE RANGE
Specified performance
-40
85
-40
85
-40
85
-40
85
°C
(4)
Full speed: 125 ksps for ADS7829, 200 ksps for ADS7826, and 250 ksps for ADS7827.
(5)
fDCLOCK = 1.2 MHz, CS = VCC for 145 clock cycles out of every 160 for the ADS7829I and ADS7829IB.
(6)
See the Power Dissipation section for more information regarding lower sample rates.
At -40
°C to 85°C, V
CC = 5 V, Vref = 5 V, unless otherwise specified.
ADS7829IB
ADS7829
ADS7826I
ADS7827I
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
SYSTEM PERFORMANCE
Resolution
12
12
10
8
Bits
No missing codes
12
11
10
8
Bits
Integral linearity error
±0.6
±0.8
±0.15
±0.1
1 LSB (7)
Differential linearity error
±0.5
±0.8
±0.15
±0.1
1
LSB
ANALOG INPUT
Offset error
±2.6
±2.6
±1.2
±0.7
LSB
Gain error
±1.2
±1.2
±0.2
±0.1
LSB
REFERENCE INPUT
Voltage range
0.05
VCC
0.05
VCC
0.05
VCC
0.05
VCC
V
(7)
LSB means Least Significant Bit . With Vref equal to 5 V, one LSB is 1.22 mV for a 12 bit ADC.
4


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