MAX522CPA Maxim Integrated Products, MAX522CPA Datasheet

IC DAC DUAL V-OUT SRL 8BIT 8-DIP

MAX522CPA

Manufacturer Part Number
MAX522CPA
Description
IC DAC DUAL V-OUT SRL 8BIT 8-DIP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX522CPA

Settling Time
70µs
Number Of Bits
8
Data Interface
Serial
Number Of Converters
2
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power Dissipation (max)
-
The MAX522 contains two 8-bit, buffered, voltage-output
digital-to-analog converters (DAC A and DAC B) in small
8-pin SO and DIP packages. DAC A’s buffer can source
and sink 5mA, and DAC B’s output can source and sink
500µA, both to within 0.5V of ground and V
MAX522 operates with a single +2.7V to +5.5V supply.
The device utilizes a 3-wire serial interface, which oper-
ates at clock rates up to 5MHz and is compatible with
SPI™, QSPI™, and Microwire™ interface standards.
The serial input shift register is 16 bits long and con-
sists of eight bits of DAC input data and eight bits for
DAC selection and shutdown control. DAC registers
can be loaded independently or in parallel at the posi-
tive edge of CS.
The MAX522’s ultra-low power consumption and small
8-pin SO package make it ideal for portable and bat-
tery-powered applications. Supply current is less than
1mA and drops below 1µA in shutdown mode. In addi-
tion, the reference input is disconnected from the REF
pin during shutdown, further reducing the system’s total
power consumption. The software format is compatible
with the MAX512/MAX513 triple 8-bit DACs.
________________________Applications
19-0403; Rev 0; 6/95
SPI and QSPI are trademarks of Motorola Inc.
Microwire is a trademark of National Semiconductor Corp.
Call toll free 1-800-998-8800 for free samples or literature.
__________________Pin Configuration
_______________General Description
TOP VIEW
Digital Gain and Offset Adjustment
Programmable Current Source
Programmable Voltage Source
Power-Amp Bias Control
VCO Tuning
SCLK
GND
V
CS
DD
________________________________________________________________ Maxim Integrated Products
1
2
3
4
DIP/SO
MAX522
7
6
5
8
DIN
REF
OUTB
OUTA
Serial DAC in 8-Pin SO Package
DD
. The
Dual, 8-Bit, Voltage-Output
____________________________Features
________________Functional Diagram
SCLK
______________Ordering Information
MAX522CPA
MAX522CSA
MAX522EPA
MAX522ESA
CS
Operates from a Single +2.7V to +5.5V Supply
Dual Buffered Voltage Output
Low Power Consumption:
Independently Programmable Shutdown Mode
5MHz, 3-Wire Serial Interface
SPI™, QSPI™, and Microwire™ Compatible
Space-Saving 8-Pin SO Package
1
2
1mA Operating Current
<1µA Shutdown Current
PART
8
DIN
0.22 F
LATCH
LATCH
-40°C to +85°C
-40°C to +85°C
DAC
DAC
TEMP. RANGE
A
B
0°C to +70°C
0°C to +70°C
3
4
V
DD
GND
7
DAC A
DAC B
REF
MAX522
0.1 F
(OPTIONAL)
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
PIN-PACKAGE
OUTA
OUTB
5
6
V
0.1 F
V
0.01 F
OUTA
OUTB
1

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MAX522CPA Summary of contents

Page 1

... Low Power Consumption: . The 1mA Operating Current DD <1µA Shutdown Current Independently Programmable Shutdown Mode 5MHz, 3-Wire Serial Interface SPI™, QSPI™, and Microwire™ Compatible Space-Saving 8-Pin SO Package ______________Ordering Information PART MAX522CPA MAX522CSA MAX522EPA MAX522ESA ________________Functional Diagram 0. DIN SCLK TEMP ...

Page 2

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package ABSOLUTE MAXIMUM RATINGS V to GND ................................................................ -0.3V, +6V DD Digital Inputs and Outputs to GND............... -0.3V, (V REF ................................................................-0.3V, (V OUTA, OUTB (Note 1)............................................................V Continuous Power Dissipation (T = +70°C) ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, REF = PARAMETER SYMBOL DYNAMIC PERFORMANCE Voltage-Output Slew Rate SR Voltage-Output Settling Time Digital Feedthrough and Crosstalk POWER SUPPLIES Supply Voltage Range V DD ...

Page 4

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT (V = 3V) DD 3.5 DAC A 3.0 2.5 DAC B 2.0 1.5 1.0 REF ...

Page 5

Operating Characteristics (continued +25°C, unless otherwise noted.) A LINE-TRANSIENT RESPONSE (OUTA) 20 s/div REF = 2.56V, NO LOAD, CODE = ALL 100mV/div DD OUTA, 500 V/div _______________________________________________________________________________________ Dual, 8-Bit, Voltage-Output Serial ...

Page 6

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted). A POSITIVE SETTLING TIME (DAC A) 20 s/div V = 3V, REF = 0.1 ...

Page 7

Description PIN NAME – — – Chip Select (active low). Enables data to be shifted into the 16-bit shift register. Programming commands are executed at the rising edge of 2 SCLK Serial Clock Input. Data is ...

Page 8

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package REF GND SHOWN FOR ALL 1s ON DAC Figure 1. DAC Simplified Circuit Diagram Serial Interface – — – An active-low chip select ( ...

Page 9

CS SCLK DIN UB1 UB2 UB3 SB SA UB4 LB (CONTROL BYTE) Figure 2. MAX522 3-Wire Serial-Interface Timing Diagram Table 2. Serial-Interface Programming Commands CONTROL UB1 UB2 UB3 SB SA UB4 ...

Page 10

Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package CS t CSS t CH SCLK DIN Figure 3. MAX522 Detailed Serial-Interface Timing Diagram The digital inputs are compatible with CMOS logic. Supply current increases slightly when ...

Page 11

Applications Information ______________ The MAX522 is specified for single-supply operation with V ranging from 2.7V to 5.5V, covering all com- DD monly used supply voltages in 3V and 5V systems. There is no internal power-on reset. Therefore, at power-up, perform ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1995 Maxim Integrated Products ...

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