MC145050DW Motorola, MC145050DW Datasheet

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MC145050DW

Manufacturer Part Number
MC145050DW
Description
10-bit A/D converter with serial interface, conversion time: 21 us
Manufacturer
Motorola
Datasheet

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
10 Bit A/D Converter
with Serial Interface
CMOS
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.
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.
MICROWIRE is a trademark of National Semiconductor Corp.
REV 2
1/99
MOTOROLA WIRELESS SEMICONDUCTOR
SOLUTIONS DEVICE DATA
These ratiometric 10-bit ADCs have serial interface ports to provide
The MC145050 has the same pin out as the 8-bit MC145040 which allows an
Motorola, Inc. 1998
11 Analog Input Channels with Internal Sample-and-Hold
Operating Temperature Range: – 40 to 125 C
Successive Approximation Conversion Time:
Maximum Sample Rate: MC145050 — 38 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
MC145050 — 21 s (with 2.1 MHz ADCLK)
MC145051 — 44 s Maximum
MC145051 — 20.4 ks/s
*ADCLK (MC145050); EOC (MC145051)
ORDERING INFORMATION
MC14505xP
MC14505xDW SOG Package
MC145050
MC145051
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
V SS
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
9
10
MC145050 MC145051
Plastic DIP
Order this document
20
19
18
17
16
15
14
13
12
11
by MC145050/D
DW SUFFIX
CASE 751D
CASE 738
P SUFFIX
PLASTIC
V DD
*
SCLK
D in
D out
CS
V ref
V AG
AN10
AN9
SOG
1

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MC145050DW Summary of contents

Page 1

... Maximum Sample Rate: MC145050 — 38 ks/s MC145051 — 20.4 ks/s Analog Input Range with 5-Volt Supply 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 Chip Complexity: 1630 Elements (FETs, Capacitors, etc ...

Page 2

... C 260 C Parameter MOTOROLA WIRELESS SEMICONDUCTOR PIN PIN AUTO-ZEROED COMPARATOR This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, pre- cautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit ...

Page 3

... MC145050: ADCLK = 2.1 MHz, SCLK = 2.1 MHz MC145051: SCLK = 2.1 MHz Maximum Sample Rate Rate at which analog inputs may be sampled MC145050: ADCLK = 2.1 MHz, SCLK = 2.1 MHz MC145051: SCLK = 2.1 MHz MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA Test Condition I out = – 1 out = – out = + 1 out = 20 A ...

Page 4

... ADCLK SCLK MC145050 MC145051 MC145051 MC145050 MC145051 MC145050 MC145051 MC145050 MC145051 MC145051 SCLK ADCLK AN0 – AN10 ADCLK, SCLK, CS out MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA Guaranteed Limit Unit 0 MHz Note 1 2.1 500 kHz 2.1 MHz 190 ns 190 190 ns 190 ...

Page 5

... LAST SCLK 0.8 V CLOCK CLOCK Figure 5. TEST POINT D out DEVICE UNDER 12 k 100 pF TEST Figure 7. Test Circuit MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA SWITCHING WAVEFORMS CS D out EOC 0 out NOTE: D out is driven only when CS is active (low). 2.0 V SCLK t h EOC 0 ...

Page 6

... A/D conversion if the port is perform- ing either a 10-bit or a 16-bit “shorter-than-conversion” transfer with CS active low between transfers, and (3) the 16th falling edge of SCLK if the port is performing 16-bit “longer-than-conversion” transfers with CS active low between transfers. MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA ...

Page 7

... These leakage currents cause an offset voltage to appear across any series source resis- tance on the selected channel. Therefore, any source resis- tance greater than 1 k (Motorola test condition) may induce errors in excess of guaranteed specifications. There are three tests available that verify the functionality of all the control logic as well as the successive approxima- tion comparator ...

Page 8

... ADCLK cycles (user-controlled time). MC145050 MC145051 SAMPLE ANALOG INPUT SAMPLE ANALOG INPUT MOTOROLA WIRELESS SEMICONDUCTOR HIGH IMPEDANCE A/D CONVERSION INTERVAL RE-INITIALIZE D9 LOW LEVEL 1 A3 A/D CONVERSION INTERVAL SOLUTIONS DEVICE DATA ...

Page 9

... MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA MC145050 MC145051 9 ...

Page 10

... MC145050 MC145051 10 MOTOROLA WIRELESS SEMICONDUCTOR SOLUTIONS DEVICE DATA ...

Page 11

... MICROWIRE serial port may also be used. Full duplex operation optimizes throughput for this system. DIGITAL DESIGN CONSIDERATIONS Motorola’s MC68HC05C4 CMOS MCU may be chosen to reduce power supply size and cost. The NMOS MCUs may be used if power consumption is not critical ...

Page 12

... ENGINE THRUST AN5 MC145051 LEFT/RIGHT AN6 UP/DOWN AN7 AN9 ENGINE THRUST AN8 AN10 Figure 15. Joystick Interface MOTOROLA WIRELESS SEMICONDUCTOR Output Code Conversion Result With Value $0000 Zero $0001 Zero + 1 LSB $0002 Zero + 2 LSBs $0003 Zero + 3 LSBs $0004 Zero + 4 LSBs ...

Page 13

... V SUPPLY Figure 16. Alternate Configuration Using the Digital Supply for the Reference Voltage This is not a complete listing of Motorola’s MCUs/MPUs. Contact your Motorola representative if you need Instruction Instruction Set M6805 M68000 SPI = Serial Peripheral Interface. SCI = Serial Communication Interface. High Speed. ...

Page 14

... 0.25 (0.010) M 0.25 (0.010 MOTOROLA WIRELESS SEMICONDUCTOR NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. INCHES MILLIMETERS DIM MIN MAX MIN MAX 1 ...

Page 15

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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