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ADS5270 Datasheet(PDF) 5 Page - Texas Instruments

Part # ADS5270
Description  8-Channel, 12-Bit, 40MSPS Analog-to-Digital Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS5270 Datasheet(HTML) 5 Page - Texas Instruments

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ADS5270
www.ti.com............................................................................................................................................... SBAS293F – JANUARY 2004 – REVISED JANUARY 2009
ELECTRICAL CHARACTERISTICS (continued)
TMIN = –40°C and TMAX = +85°C. Typical values are at TA = +25°C, clock frequency = maximum specified, 50% clock duty
cycle, AVDD = 3.3V, LVDD = 3.3V, –1dBFS, ISET = 56.2kΩ, internal voltage reference, and LVDS buffer current at 3.5mA per
channel, unless otherwise noted.
ADS5270
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT
Differential Input Capacitance
4.0
pF
Analog Input Common-Mode Range
VCM ± 50
mV
Differential Full-Scale Input Voltage Range
Internal Reference
2.03
VPP
External Reference
2.03 × (VREFT – VREFB)
VPP
Voltage Overload Recovery Time(7)
3.0
CLK Cycles
–3dBFS, 25
Ω Series
Input Bandwidth
300
MHz
Resistances
DIGITAL DATA INPUTS
VIH High-Level Input Voltage
2.2
V
VIL Low-Level Input Voltage
0.6
V
CIN Input Capacitance
3.0
pF
DIGITAL DATA OUTPUTS
Data Format
Straight Offset Binary
Data Bit Rate
240
480
Mbps
SERIAL INTERFACE
SCLK Serial Clock Input Frequency
20
MHz
(7)
A differential ON/OFF pulse is applied to the ADC input. The differential amplitude of the pulse in its ON (high) state is twice the
full-scale range of the ADC, while the differential amplitude of the pulse in its OFF (low) state is zero. The overload recovery time of the
ADC is measured as the time required by the ADC output code to settle within 1% of full-scale, as measured from its mid-code value
when the pulse is switched from ON (high) to OFF (low).
REFERENCE SELECTION
MODE
INT/EXT
DESCRIPTION
Internal Reference; FSR = 2.03VPP
1
Default with internal pull-up.
Internal reference is powered down. The common-mode voltage
External Reference; FSR = 2.03 × (REFT – REFB)
0
of the external reference should be within 50mV of VCM. VCM is
derived from the internal bandgap voltage.
Copyright © 2004–2009, Texas Instruments Incorporated
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