ADC12040EVAL National Semiconductor, ADC12040EVAL Datasheet - Page 3

• Manufacturer Part Number: ADC12040EVAL
• Description: BOARD EVALUATION FOR ADC12040
• Manufacturer: National Semiconductor

Specifications of ADC12040EVAL

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 40M
• Data Interface: Parallel
• Inputs Per Adc: 1 Differential
• Input Range: 2 Vpp
• Power (typ) @ Conditions: 340mW @ 40MSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: ADC12040
• Lead Free Status / RoHS Status: Not applicable / Not applicable

ANALOG I/O
DIGITAL I/O
14–19, 22–
Pin Descriptions and Equivalent Circuits
Pin No.
31
32
30
10
11
27
2
3
1
8
Symbol
D0–D11
V
CLK
V
V
V
V
V
OE
PD
REF
RM
IN
IN
RP
RN
+
−
Equivalent Circuit
3
Non-Inverting analog signal Input. With a 2.0V reference voltage,
the ground-referenced input signal level is 2.0 V
V
Inverting analog signal Input. With a 2.0V reference voltage the
ground-referenced input signal level is 2.0 V
This pin may be connected to V
a differential input signal is required for best performance.
Reference input. This pin should be bypassed to ground with a 0.1
µF monolithic capacitor. V
between 1.0V to 2.4V.
These pins are high impedance reference bypass pins. Connect a
0.1 µF capacitor from each of these pins to AGND. DO NOT load
these pins.
Digital clock input. The input is sampled on the rising edge of CLK.
OE is the output enable pin that, when low, enables the TRI-
STATE ™ data output pins. When this pin is high, the outputs are
in a high impedance state.
PD is the Power Down input pin. When high, this input puts the
converter into the power down mode. When this pin is low, the
converter is in the active mode.
Digital data output pins that make up the 12-bit conversion results.
D0 is the LSB, while D11 is the MSB of the offset binary output
word. Output levels are TTL/CMOS compatible.
CM
.
REF
Description
is 2.0V nominal and should be
CM
for single-ended operation, but
P-P
centered on V
P-P
centered on
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CM
.