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ADS4245 Arkusz danych(PDF) 10 Page - Texas Instruments

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Numer części ADS4245
Szczegółowy opis  Dual-Channel, 14-/12-Bit, 160/125/65MSPS Ultralow-Power ADC
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

ADS4245 Arkusz danych(HTML) 10 Page - Texas Instruments

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DAn_P
DBn_P
DAn_M
DBn_M
GND
Logic0
V
(1)
ODL =
350mV
-
Logic1
V
(1)
ODH =+350mV
V
OCM
ADS4222, ADS4225, ADS4226
ADS4242, ADS4245, ADS4246
SBAS533C
– MARCH 2011 – REVISED JUNE 2011
www.ti.com
DIGITAL CHARACTERISTICS
At AVDD = 1.8V and DRVDD = 1.8V, unless otherwise noted. DC specifications refer to the condition where the digital
outputs do not switch, but are permanently at a valid logic level
'0' or '1'.
ADS424x/422x
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DIGITAL INPUTS (RESET, SCLK, SDATA, SEN, CTRL1, CTRL2, CTRL3)(1)
High-level input voltage
1.3
V
All digital inputs support 1.8V
and 3.3V CMOS logic levels
Low-level input voltage
0.4
V
SDATA, SCLK(2)
VHIGH = 1.8V
10
µA
High-level input current
SEN(3)
VHIGH = 1.8V
0
µA
SDATA, SCLK
VLOW = 0V
0
µA
Low-level input current
SEN
VLOW = 0V
10
µA
DIGITAL OUTPUTS, CMOS INTERFACE (DA[13:0], DB[13:0], CLKOUT, SDOUT)
High-level output voltage
DRVDD
– 0.1
DRVDD
V
Low-level output voltage
0
0.1
V
Output capacitance (internal to device)
pF
DIGITAL OUTPUTS, LVDS INTERFACE
High-level output
With an external
VODH
270
350
430
mV
differential voltage
100
Ω termination
Low-level output
With an external
VODL
–430
–350
–270
mV
differential voltage
100
Ω termination
Output common-mode voltage
VOCM
0.9
1.05
1.25
V
(1)
SCLK, SDATA, and SEN function as digital input pins in serial configuration mode.
(2)
SDATA, SCLK have internal 150k
Ω pull-down resistor.
(3)
SEN has an internal 150k
Ω pull-up resistor to AVDD. Because the pull-up is weak, SEN can also be driven by 1.8V or 3.3V CMOS
buffers.
(1) With external 100
Ω termination.
Figure 1. LVDS Output Voltage Levels
10
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Copyright
© 2011, Texas Instruments Incorporated
Product Folder Link(s): ADS4222 ADS4225 ADS4226 ADS4242 ADS4245 ADS4246


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