MC145053
MOTOROLA WIRELESS SEMICONDUCTOR
SOLUTIONS DEVICE DATA
1
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.
5 Analog Input Channels with Internal Sample-and-Hold
Operating Temperature Range: – 40 to 125
°
C
Successive Approximation Conversion Time: 44
μ
s 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
BLOCK DIAGRAM
SUCCESSIVE APPROXIMATION
REGISTER
2
3
4
5
6
12
11
1
10
13
10-BIT RC DAC
WITH SAMPLE AND HOLD
DATA REGISTER
9
8
VAG
Vref
AUTO-ZEROED
COMPARATOR
MUX ADDRESS
REGISTER
DIGITAL CONTROL
LOGIC
INTERNAL
TEST
VOLTAGES
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Din
Dout
CS
SCLK
EOC
MUX OUT
PIN 14 = VDD
PIN 7 = VSS
ANALOG
MUX
MICROWIRE is a trademark of National Semiconductor Corp.
Order this document
by MC145053/D
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENT
P SUFFIX
PLASTIC
CASE 646
D SUFFIX
SOG
CASE 751A
ORDERING INFORMATION
MC145053P
MC145053D
Plastic DIP
SOG Package
11
12
13
14
8
9
10
5
4
3
2
1
7
6
CS
Dout
Din
SCLK
VDD
VAG
Vref
AN2
AN1
AN0
EOC
VSS
AN4
AN3
REV 2
1/99