ADC10040CIMT National Semiconductor Corporation, ADC10040CIMT Datasheet - Page 3

• Manufacturer Part Number: ADC10040CIMT
• Description: ADC10040 - 10-Bit, 40 Msps, 3V, 55.5 MW A/D Converter, Package: Tssop, Pin Nb=28
• Manufacturer: National Semiconductor Corporation

ANALOG I/O
DIGITAL I/O
Pin Descriptions and Equivalent Circuits
Pin No.
12
13
15
28
6
7
4
8
1
5
IRS (Input Range
Symbol
Select)
V
V
STBY
V
V
CLK
V
V
REFT
REFB
DF
COM
REF
IN −
IN +
Equivalent Circuit
3
Inverting analog input signal. With a 1.2V reference the
full-scale input signal level is 1.0 V
V
Non-inverting analog input signal. With a 1.2V reference the
full-scale input signal level is 1.0 V
Reference input. This pin should be bypassed to V
1 µF monolithic capacitor. V
may be driven by a 1.20V external reference if desired.
V
only. Connect a 1 µF capacitor from each of these pins to
V
V
V
Digital clock input. The range of frequencies for this input is
10 MHz to 40 MHz. The input is sampled on the rising edge
of this input.
DF = “1” Two’s Complement
DF = “0” Offset Binary
This is the standby pin. When high, this pin sets the converter
into standby mode. When this pin is low, the converter is in
active mode.
IRS = “V
IRS = “V
IRS = “Floating” 1.0 V
COM
REFT
SSA
SSA
CM
.
. V
. V
for single-ended operation.
and V
COM
COM
DDA
SSA
” 1.5 V
” 2.0 V
should also be bypassed with a 1 µF capacitor to
may be used to set the input common voltage
REFB
are high impedance reference bypass pins
P-P
P-P
P-P
input range
input range
Description
input range
REF
is 1.20V nominal. This pin
P-P
P-P
. This pin may be tied to
.
www.national.com
SSA
with a