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ADS62P49 Datasheet, PDF (9/76 Pages) Texas Instruments – Dual Channel 14-/12-Bit, 250-/210-MSPS ADC With DDR LVDS and Parallel CMOS Outputs
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ADS62P49 / ADS62P29
ADS62P48 / ADS62P28
www.ti.com............................................................................................................................................................. SLAS635A – APRIL 2009 – REVISED JUNE 2009
DIGITAL CHARACTERISTICS — ADS62Px9/x8
The DC specifications refer to the condition where the digital outputs are not switching, but are permanently at a valid logic
level 0 or 1. AVDD = 3.3V, DRVDD = 1.8V
PARAMETER
TEST CONDITIONS
DIGITAL INPUTS – CTRL1, CTRL2, CTRL3, RESET, SCLK, SDATA, SEN(1)
ADS62P49/ADS62P48/
ADS62P29/ADS62P28
MIN TYP MAX
High-level input voltage
Low-level input voltage
High-level input current
All digital inputs support 1.8V and 3.3V
1.3
CMOS logic levels.
0.4
SDATA, SCLK(2)
16
SEN (3)
VHIGH = 3.3 V
10
SDATA, SCLK
0
Low-level input current
SEN
VLOW = 0 V
–20
Input capacitance
4
DIGITAL OUTPUTS – CMOS INTERFACE (DA0-DA13, DB0-DB13, CLKOUT, SDOUT)
High-level output voltage
IOH = 1mA
DRVDD
–0.1
DRVDD
Low-level output voltage
Output capacitance (internal to device)
IOL = 1mA
0
0.1
2
DIGITAL OUTPUTS – LVDS INTERFACE
VODH
VODL
VOCM
High-level output differential voltage
Low-level output differential voltage
Output common-mode voltage
Output Capacitance
With external 100 Ω termination.
With external 100 Ω termination.
Capacitance inside the device from
each output to ground
275
–425
1
350
–350
1.15
2
425
–275
1.4
UNIT
V
V
µA
µA
pF
V
V
pF
mV
mV
V
pF
(1) SCLK, SDATA, SEN function as digital input pins in serial configuration mode.
(2) SDATA, SCLK have internal 200 kΩ pull-down resistor
(3) SEN has internal 100 kΩ pull-up resistor to AVDD. Since the pull-up is weak, SEN can also be driven by 1.8V or 3.3V CMOS buffers.
DDAn_PD/DnB+1n_PP
DADnnM_D/DnB+n1M_M
VOCM
Logic 0
VODL = –350 mV(1)
Logic 1
VODH = 350 mV(1)
V
GGNNDD
(1) With external 100-Ω termination
Figure 3. LVDS Output Voltage Levels
T0334-02
Copyright © 2009, Texas Instruments Incorporated
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Product Folder Link(s): ADS62P49 / ADS62P29 ADS62P48 / ADS62P28
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