ADC12138CIWM National Semiconductor, ADC12138CIWM Datasheet - Page 3

• Manufacturer Part Number: ADC12138CIWM
• Description: IC, ADC, 12BIT, SELF-CALIB, 28SOIC
• Manufacturer: National Semiconductor

Specifications of ADC12138CIWM

• Resolution (bits): 12bit
• Input Channel Type: Pseudo Differential, Single Ended
• Data Interface: Serial, SPI
• Supply Voltage Range - Analogue: 3V To 5.5V
• Supply Voltage Range - Digital: 3V To 5.5V
• Sampling Rate: 114kSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ordering Information
Some of these product/package combinations are obsolete and are shown here for reference only. Check the National web site
for availability.
Pin Descriptions
CH0 thru CH7
MUXOUT1
MUXOUT2
Pin Name
A/DIN1
A/DIN2
COM
Pin Description
Analog Inputs to the MUX (multiplexer). A channel input is selected by the address information at the DI pin,
which is loaded at the rising edge of SCLK into the address register (see Table 2 and Table 3). The voltage
applied to these inputs should not exceed V
unselected channel may corrupt the reading of a selected channel.
Analog input pin that is used as a pseudo ground when the analog multiplexer is single-ended.
Multiplexer Output pins. If the multiplexer is used, these pins should be connected to the A/DIN pins, directly
or through an amplifier and/of filter.
Converter Input pins. MUXOUT1 is usually tied to A/DIN1. MUXOUT2 is usually tied to A/DIN2. If external
circuitry is placed between MUXOUT1 and A/DIN1, or MUXOUT2 and A/DIN2, it may be necessary to protect
these pins against voltage overload. The voltage at these pins should not exceed V
Figure 6).
ADC12130CIN
ADC12130CIWM
ADC12130CIWMX
ADC12132CIMSA
ADC12132CIMSAX
ADC12138CIN
ADC12138CIWM
ADC12138CIWMX
ADC12138CIMSA
ADC12138CIMSA
Industrial Temperature Range
−40°C
≤
T
A
≤
+85°C
28-Pin Dual-In-Line, SSOP and
Wide Body SO Packages
Top View
3
A
M16B, Wide Body SO - Tape & Reel
+ or go below V
MSA20, SSOP - Tape & Reel
MSA28, SSOP - Tape & Reel
NS Package Number
M16B, Wide Body SO
M28B - Tape & Reel
N16E, Dual-In-Line
N28B, Dual-In-Line
MSA20, SSOP
MSA28, SSOP
1207903
M28B
A
- or below GND. Exceeding this range on an
A
+
or go below AGND (see
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