MOTOROLA
Order this document
by MC145053/D
SEMICONDUCTOR TECHNICAL DATA
MC145053
10ĆBit A/D Converter
with Serial Interface
P SUFFIX
PLASTIC
CASE 646
CMOS
This ratiometric 10-bit ADC has a serial interface port to provide communication with MCUs and MPUs. Either a 10- or 16-bit format can be used. The
16-bit format can be one continuous 16-bit stream or two intermittent 8-bit
streams. The converter operates from a single power supply with no external
trimming required. Reference voltages down to 4.0 V are accommodated.
The MC145053 has an internal clock oscillator to operate the dynamic A/D
conversion sequence and an end-of-conversion (EOC) output.
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D SUFFIX
SOG
CASE 751A
ORDERING INFORMATION
5 Analog Input Channels with Internal Sample-and-Hold
Operating Temperature Range: – 40 to 125° C
Successive Approximation Conversion Time: 44 µs Maximum
Maximum Sample Rate: 20.4 ks/s
Analog Input Range with 5-Volt Supply: 0 to 5 V
Monotonic with No Missing Codes
Direct Interface to Motorola SPI and National MICROWIRE Serial Data
Ports
Digital Inputs/Outputs are TTL, NMOS, and CMOS Compatible
Low Power Consumption: 14 mW
Chip Complexity: 1630 Elements (FETs, Capacitors, etc.)
See Application Note AN1062 for Operation with QSPI
MC145053P
MC145053D
Plastic DIP
SOG Package
PIN ASSIGNMENT
EOC
INTERNAL
TEST
VOLTAGES
CS
SCLK
EOC
SCLK
AN1
3
12
Din
4
11
Dout
5
10
CS
AN4
6
9
Vref
7
8
VAG
VAG
9
8
10-BIT RC DAC
WITH SAMPLE AND HOLD
SUCCESSIVE APPROXIMATION
REGISTER
MUX ADDRESS
REGISTER
PIN 14 = VDD
PIN 7 = VSS
DATA REGISTER
AUTO-ZEROED
COMPARATOR
10
13
13
VSS
AN0 2
AN1 3
ANALOG
4
AN2
MUX
5
AN3
AN4 6
AN5
AN6
AN7
12
Din
11
Dout
2
AN3
MUX OUT
VDD
AN2
Vref
14
AN0
BLOCK DIAGRAM
1
DIGITAL CONTROL
LOGIC
1
MICROWIRE is a trademark of National Semiconductor Corp.
REV 2
1/99
©MOTOROLA WIRELESS SEMICONDUCTOR
Motorola, Inc. 1998
SOLUTIONS DEVICE DATA
MC145053
1