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ADS7946SRTER Datasheet(PDF) 4 Page - Texas Instruments

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Part # ADS7946SRTER
Description  14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7946SRTER Datasheet(HTML) 4 Page - Texas Instruments

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ADS7945
ADS7946
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS: ADS7945 (Differential) (continued)
Minimum/maximum specifications at TA = –40°C to +125°C, AVDD = 2.7 V to 5.25 V, DVDD = 1.65 V to AVDD, input
common-mode = VREF/2 ± 0.2, and fSAMPLE = 2 MSPS, unless otherwise noted.
Typical specifications at TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, input common-mode = VREF/2 ± 0.2, and fSAMPLE = 2 MSPS.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL INPUT/OUTPUT
Logic family
CMOS
VIH
0.7DVDD
V
VIL
0.3DVDD
V
Logic level
VOH
SDO load 20 pF
0.8DVDD
V
VOL
SDO load 20 pF
0.2DVDD
V
Input leakage current
IIH, IIL
0
< VIN < DVDD
±20
nA
External reference
2.5
AVDD
V
POWER-SUPPLY REQUIREMENTS
AVDD
2.7
3.3
5.25
V
DVDD
1.65
3.3
AVDD
V
AVDD = 3.3 V, fSAMPLE = 2 MSPS
3.5
4
mA
IDYNAMIC
AVDD = 5 V, fSAMPLE = 2 MSPS
4
5
mA
AVDD supply current
AVDD = 3.3 V, SCLK off
2.3
mA
ISTATIC
AVDD = 5 V, SCLK off
2.5
3
mA
DVDD = 3.3 V, fSAMPLE = 2 MSPS,
DVDD supply current(9)
750
µA
SDO load 20 pF
IPD-DYNAMIC
SCLK = 40 MHz
550
µA
Power-down state
AVDD supply current
IPD-STATIC
SCLK off
2.5
µA
Power-up time
From power-down state using PDEN pin
1
µs
TEMPERATURE RANGE
Specified performance
–40
+125
°C
(9)
DVDD consumes only dynamic current. IDVDD = CLOAD × DVDD × number of 0→1 transitions in SDO × fSAMPLE.
This is a load-dependent current and there is no DVDD current when the output is not toggling.
4
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Copyright
© 2011, Texas Instruments Incorporated
Product Folder Link(s): ADS7945 ADS7946


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