MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC145053/D
MC145053
10 Bit A/D Converter
with Serial Interface
P SUFFIX
PLASTIC
CASE 646
CMOS
This ratiometric 10-bit ADC has a serial interface port to provide communi-
cation 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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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
D SUFFIX
SOG
CASE 751A
ORDERING INFORMATION
Plastic DIP
SOG Package
PIN ASSIGNMENT
EOC
AN0
AN1
AN2
AN3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VDD
SCLK
Din
Dout
CS
Vref
VAG
BLOCK DIAGRAM
Vref
MUX OUT
VAG
AN4
VSS
9
8
10-BIT RC DAC
WITH SAMPLE AND HOLD
INTERNAL
TEST
VOLTAGES
AN0 2
AN1 3
ANALOG
4
AN2
MUX
5
AN3
AN4 6
AN5
AN6
AN7
12
Din
11
Dout
CS
SCLK
EOC
10
13
1
SUCCESSIVE APPROXIMATION
REGISTER
MUX ADDRESS
REGISTER
PIN 14 = VDD
PIN 7 = VSS
DATA REGISTER
AUTO-ZEROED
COMPARATOR
DIGITAL CONTROL
LOGIC
MICROWIRE is a trademark of National Semiconductor Corp.
REV 2
1/99
©
MOTOROLA WIRELESS SEMICONDUCTOR
Motorola, Inc. 1998
MC145053
SOLUTIONS DEVICE DATA
1
MOTOROLA [ MOTOROLA, INC ]
