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ADS4246 bảng dữ liệu(PDF) 7 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Dual-Channel, 14-Bit, 250-MSPS Ultralow-Power ADC with Analog Input Buffer
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ADS4246 bảng dữ liệu(HTML) 7 Page - Texas Instruments

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ADS42B49
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SBAS558B – DECEMBER 2012 – REVISED JANUARY 2013
DIGITAL CHARACTERISTICS
At AVDD = 1.9 V, AVDD_BUF = 3.3 V, and DRVDD = 1.8 V, 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'.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DIGITAL INPUTS (RESET, SCLK, SDATA, SEN, CTRL1, CTRL2, CTRL3)(1)
VIH
High-level input voltage
All digital inputs support
1.3
V
1.8-V and 3.3-V CMOS
VIL
Low-level input voltage
0.4
V
logic levels
SDATA, SCLK(2)
VHIGH = 1.8 V
10
µA
IIH
High-level input current
SEN(3)
VHIGH = 1.8 V
0
µA
SDATA, SCLK
VLOW = 0 V
0
µA
IIL
Low-level input current
SEN
VLOW = 0 V
10
µA
DIGITAL OUTPUTS, CMOS INTERFACE (DA[13:0], DB[13:0], CLKOUT, SDOUT)
DRVDD –
VOH
High-level output voltage
DRVDD
V
0.1
VOL
Low-level output voltage
0
0.1
V
CO
Output capacitance (internal to device)
pF
DIGITAL OUTPUTS, LVDS INTERFACE
With an external
VODH
High-level output differential voltage
275
350
425
mV
100-
Ω termination
With an external
VODL
Low-level output differential voltage
–425
–350
–275
mV
100-
Ω termination
VOCM
Output common-mode voltage
0.9
1.05
1.25
V
(1)
SCLK, SDATA, and SEN function as digital input pins in serial configuration mode.
(2)
SDATA and SCLK have an internal 150-k
Ω pull-down resistor.
(3)
SEN has an internal 150-k
Ω pull-up resistor to AVDD. Because the pull-up resistor is weak, SEN can also be driven by 1.8-V or 3.3-V
CMOS buffers.
Copyright © 2012–2013, Texas Instruments Incorporated
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