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ADS8331IRGET Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza ADS8331IRGET
Descripción Electrónicos  Low-Power, 16-Bit, 500kSPS, 4-/8-Channel Unipolar Input ANALOG-TO-DIGITAL CONVERTERS with Serial Interface
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ADS8331IRGET Datasheet(HTML) 6 Page - Texas Instruments

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ADS8331
ADS8332
SBAS363 – DECEMBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS: VA = 5V (continued)
At TA = –40°C to +85°C, VA = 5V, VBD = 1.65V to 5V, VREF = 4.096V, and fSAMPLE = 500kSPS, unless otherwise noted.
ADS8331I, ADS8332I
ADS8331IB, ADS8332IB
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
CLOCK
Internal conversion clock
10.9
11.5
12.6
10.9
11.5
12.6
MHz
frequency
Used as I/O clock only
40
40
MHz
SCLK external serial clock
Used as both I/O clock and
1
21
1
21
MHz
conversion clock
EXTERNAL VOLTAGE REFERENCE INPUT
Input
(REF+) – (REF–)
1.2
4.096
4.2
1.2
4.096
4.2
V
VREF
reference
(REF–) – AGND
–0.1
0.1
–0.1
0.1
V
range(5)
Resistance (6)
Reference input
20
20
k
DIGITAL INPUT/OUTPUT
Logic family
CMOS
CMOS
0.65 ×
0.65 ×
VIH
High-level input voltage
VA
≥ VBD ≥ 1.65V
VBD + 0.3
VBD + 0.3
V
(VBD)
(VBD)
0.25 ×
0.25 ×
VIL
Low-level input voltage
VA
≥ VBD ≥ 1.65V
–0.3
–0.3
V
(VBD)
(VBD)
II
Input current
VIN = VBD or DGND
–50
50
–50
50
nA
CI
Input capacitance
5
5
pF
VA
≥ VBD ≥ 1.65V,
VOH
High-level output voltage
VBD – 0.6
VBD
VBD – 0.6
VBD
V
IO = 100μA
VA
≥ VBD ≥ 1.65V,
VOL
Low-level output voltage
0
0.4
0
0.4
V
IO = –100μA
CO
SDO pin capacitance
Hi-Z state
5
5
pF
CL
Load capacitance
30
30
pF
Data format
Straight binary
Straight binary
POWER-SUPPLY REQUIREMENTS
VA
Analog supply voltage(5)
4.5
5
5.5
4.5
5
5.5
V
VBD
Digital I/O supply voltage
1.65
VA + 0.2
1.65
VA + 0.2
V
fSAMPLE = 500kSPS
6.6
7.75
6.6
7.75
mA
fSAMPLE = 250kSPS in
4.2
4.2
mA
Auto-Nap mode
IA
Analog supply current
Nap mode, SCLK = VBD or
390
500
390
500
μA
DGND
Deep PD mode, SCLK = VBD
80
250
80
250
nA
or DGND
fSAMPLE = 500kSPS
1.2
2.0
1.2
2.0
mA
IBD
Digital I/O supply current
fSAMPLE = 250kSPS in
0.7
0.7
mA
Auto-Nap mode
VA = 5.0V, VBD = 5.0V,
39
48.75
39
48.75
mW
fSAMPLE = 500kSPS
Power dissipation
VA = 5.0V, VBD = 5.0V,
fSAMPLE = 250kSPS in
24.5
24.5
mW
Auto-Nap mode
TEMPERATURE RANGE
TA
Operating free-air temperature
–40
+85
–40
+85
°C
(5)
The ADS8331/32 operates with VA between 2.7V and 5.5V, and VREF between 1.2V and VA. However, the device may not meet the
specifications listed in the Electrical Characteristics when VA is between 3.6V and 4.5V.
(6)
Can vary ±30%.
6
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): ADS8331 ADS8332


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