MC145050 Datasheet, PDF (1/15 Pages) Motorola, Inc – 10-Bit A/D Converter with Serial Interface

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
10ĆBit A/D Converter
with Serial Interface
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.
• 11 Analog Input Channels with Internal Sample-and-Hold
• Operating Temperature Range: – 40 to 125° C
• Successive Approximation Conversion Time:
MC145050 — 21 µs (with 2.1 MHz ADCLK)
MC145051 — 44 µs Maximum
• Maximum Sample Rate: MC145050 — 38 ks/s
MC145051 — 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
Order this document
by MC145050/D
MC145050
MC145051
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 1
AN1 2
AN2 3
AN3 4
AN4 5
AN5 6
AN6 7
AN7 8
AN8 9
VSS 10
20 VDD
19 _*
18 SCLK
17 Din
16 Dout
15 CS
14 Vref
13 VAG
12 AN10
11 AN9
MICROWIRE is a trademark of National Semiconductor Corp.
REV 2
1/99
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SOLUTIONS DEVICE DATA
MC145050 MC145051
1