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ADC081500 View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
ADC081500 High Performance, Low Power, 8-Bit, 1.5 GSPS A/D Converter National-Semiconductor
National ->Texas Instruments National-Semiconductor
ADC081500 Datasheet PDF : 34 Pages
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Pin Functions
Pin No.
Symbol
Equivalent Circuit
Description
18
CLK+
19
CLK-
LVDS Clock input pins for the ADC. The differential clock
signal must be a.c. coupled to these pins. The input signal
is sampled on the falling edge of CLK+. See Section 2.3.
11
VIN+
10
VIN
7
VCMO
31
VBG
126
CalRun
Analog signal inputs to the ADC. The differential full-scale
input range of this input is programmable using the FSR pin
14 in normal mode and the Input Full-Scale Voltage Adjust
register in the extended control mode. Refer to the VIN
specification in the Converter Electrical Characteristics for
the full-scale input range in the normal mode. Refer to ??
1.4 for the full-scale input range in the extended control
mode.
Common Mode Voltage. The voltage output at this pin is
required to be the common mode input voltage at VIN+ and
VIN− when d.c. coupling is used. This pin should be
grounded when a.c. coupling is used at the analog inputs.
This pin is capable of sourcing or sinking 100 μA. See
Section 2.2.
Bandgap output voltage capable of 100 μA source/sink.
Calibration Running indication. This pin is at a logic high
when calibration is running.
32
REXT
34
Tdiode_P
35
Tdiode_N
External bias resistor connection. Nominal value is 3.3 k-
Ohms (±0.1%) to ground. See Section 1.1.1.
Temperature Diode Positive (Anode) and Negative
(Cathode). These pins may be used for die temperature
measurements, however no specified accuracy is implied
or guaranteed. See Section 2.6.2.
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