ML145053 Datasheet, PDF (1/15 Pages) LANSDALE Semiconductor Inc. – 10-Bit A/D Converter With Serial Interface CMOS

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
9
8
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