MAX1323ECM-T Maxim Integrated, MAX1323ECM-T Datasheet - Page 10

• Manufacturer Part Number: MAX1323ECM-T
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

526ksps, Single-Channel,
14-Bit, Parallel-Interface ADCs
Figure 1. Functional Diagram
The MAX1319/MAX1323/MAX1327 are 14-bit, 526ksps,
1.6µs conversion-time ADCs. These devices are available
with 0 to +5V, ±5V, and ±10V input ranges. The 0 to +5V
device features ±6V fault-tolerant inputs (see the Typical
Operating Circuits). The ±5V and ±10V devices feature
±16.5V fault-tolerant inputs (see the Typical Operating
Circuits). Internal or external reference, and clock capa-
bility offer great flexibility and ease of use. A 16.6MHz,
14-bit, parallel data bus outputs the conversion result.
Figure 1 shows the functional diagram of these devices.
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INTCLK/EXTCLK
Detailed Description
REF
AGND
AV
REF+
COM
MSV
REF-
REF
A
MS
DD
IN
*SWITCH CLOSED ON UNIPOLAR DEVICE, OPEN ON BIPOLAR DEVICES
*
S/H
5kΩ
5kΩ
MAX1319
MAX1323
MAX1327
14-BIT
2.500V
ADC
The time required for the T/H to acquire an input signal
depends on the input source impedance. If the input sig-
nal’s source impedance is high, the acquisition time
lengthens and more time must be allowed between con-
versions. The acquisition time (t
time the device takes to acquire the signal. Use the fol-
lowing formula to calculate the acquisition time:
where R
impedance, and t
source impedance of less than 100Ω does not signifi-
cantly affect the ADC’s performance.
IN
INTERFACE
CONTROL
AND
= 2.2kΩ, R
t
ACQ
= 10 (R
ACQ
S
is never less than 180ns. A
= the input signal’s source
S
+ R
CS
RD
CONVST
SHDN
CLK
ALLON
EOC
EOLC
DGND
DV
D13
D0
DD
IN
ACQ
) x 6pF
) is the maximum
Analog Inputs
T/H