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PDF ( 数据手册 , 数据表 ) ML145053

零件编号 ML145053
描述 10-Bit A/D Converter
制造商 LANSDALE Semiconductor
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ML145053 数据手册, 描述, 功能
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ML145053
10-Bit A/D Converter With
Serial Interface
CMOS
Legacy Device: Motorola MC145053
This ratiometric 10-bit ADC has a serial interface port to provide commu-
nication with MCUs and MPUs. Either a 10- or 16-bit format can be used.
The16-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 exter-
nal trimming required. Reference voltages down to 4.0 V are accommodated.
The ML145053 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: TA – 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 DataPorts
• 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
MUX OUT
Vref VAG
98
10–BIT RC DAC
WITH SAMPLE AND HOLD
P DIP 14 = CP
PLASTIC
CASE 646
SOG 14 = -5P
SOG
CASE 751A
CROSS REFERENCE/ORDERING INFORMATION
PACKAGE
MOTOROLA
LANSDALE
P DIP 14
SOG 14
MC145053P ML145053CP
MC145053D ML145053-5P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
PIN ASSIGNMENT
EOC 1
AN0 2
AN1 3
AN2 4
AN3 5
AN4 6
VSS 7
14 VDD
13 SCLK
12 Din
11 Dout
10 CS
9 Vref
8 VAG
INTERNAL
TEST
VOLTAGES
AN0 2
AN1 3
AN2 4
AN3 5
AN4 6
ANALOG
MUX
AN5
AN6
AN7
Din 12
Dout 11
SUCCESSIVE APPROXIMATION
REGISTER
MUX ADDRESS
REGISTER
DATA REGISTER
CS 10
SCLK 13
EOC 1
DIGITAL CONTROL
LOGIC
MICROWIRE is a trademark of National Semiconductor Corp.
Page 1 of 15
www.lansdale.com
PIN 14 = VDD
PIN 7 = VSS
AUTO–ZEROED
COMPARATOR
Issue A







ML145053 pdf, 数据表
ML145053
www.DataSheet4U.com
LANSDALE Semiconductor, Inc.
CS
Dout D9–MSB D8 D7 D6 D5 D4 D3 D2 D1 D0
SCLK
1 2 3 4 5 6 7 8 9 10
HIGH IMPEDANCE
D9
1
Din
MSB
EOC
INITIALIZE
A3
SHIFT IN NEW MUX ADDRESS,
SIMULTANEOUSLY SHIFT OUT PREVIOUS CONVERSION VALUE
A/D CONVERSION
INITERVAL
Figure 9. Timing for 10-Clock Transfer Using CS
RE-INITIALIZE
MUST BE HIGH ON POWER UP
CS
Dout D9–MSB D8 D7 D6 D5 D4 D3 D2 D1 D0
SCLK
1 2 3 4 5 6 7 8 9 10
LOW LEVEL
Din A3 A2 A1 A0
MSB
EOC
INITIALIZE
SHIFT IN NEW MUX ADDRESS,
SIMULTANEOUSLY SHIFT OUT PREVIOUS CONVERSION VALUE
A/D CONVERSION
INITERVAL
Figure 10. Timing for 10-Clock Transfer Not Using CS
NOTES:
1. D9, D8, D7, D6, D5, …, D0 = the result of the previous A/D conversion.
2. A3, A2, A1, A0 = the mux address for the next A/D conversion.
D9
1
A3
Page 8 of 15
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Issue A














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