MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC145050/D
MC145050
10 Bit A/D Converter
with Serial Interface
MC145051
CMOS
These ratiometric 10-bit ADCs have serial interface ports 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 converters operate from a single power supply with no
external trimming required. Reference voltages down to 4.0 V are accommo-
dated.
The MC145050 has the same pin out as the 8-bit MC145040 which allows an
external clock (ADCLK) to operate the dynamic A/D conversion sequence. The
MC145051 has the same pin out as the 8-bit MC145041 which has an internal
clock oscillator and an end-of-conversion (EOC) output.
鈥?/div>
11 Analog Input Channels with Internal Sample-and-Hold
鈥?/div>
Operating Temperature Range: 鈥?40 to 125擄 C
鈥?/div>
Successive Approximation Conversion Time:
MC145050 鈥?21
碌s
(with 2.1 MHz ADCLK)
MC145051 鈥?44
碌s
Maximum
鈥?/div>
Maximum Sample Rate: MC145050 鈥?38 ks/s
MC145051 鈥?20.4 ks/s
鈥?/div>
Analog Input Range with 5-Volt Supply: 0 to 5 V
鈥?/div>
Monotonic with No Missing Codes
鈥?/div>
Direct Interface to Motorola SPI and National MICROWIRE Serial Data
Ports
鈥?/div>
Digital Inputs/Outputs are TTL, NMOS, and CMOS Compatible
鈥?/div>
Low Power Consumption: 14 mW
鈥?/div>
Chip Complexity: 1630 Elements (FETs, Capacitors, etc.)
鈥?/div>
See Application Note AN1062 for Operation with QSPI
P SUFFIX
PLASTIC
CASE 738
DW SUFFIX
SOG
CASE 751D
ORDERING INFORMATION
MC14505xP
Plastic DIP
MC14505xDW SOG Package
PIN ASSIGNMENT
*ADCLK (MC145050); EOC (MC145051)
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
VSS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VDD
*
SCLK
Din
Dout
CS
Vref
VAG
AN10
AN9
MICROWIRE is a trademark of National Semiconductor Corp.
REV 2
1/99
漏
MOTOROLA WIRELESS SEMICONDUCTOR
Motorola, Inc. 1998
MC145050 MC145051
SOLUTIONS DEVICE DATA
1
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