MAX521ACAG+ Maxim Integrated Products, MAX521ACAG+ Datasheet

IC DAC 8BIT OCTAL R-R 24-SSOP

MAX521ACAG+

Manufacturer Part Number
MAX521ACAG+
Description
IC DAC 8BIT OCTAL R-R 24-SSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX520BCPE.pdf (20 pages)

Specifications of MAX521ACAG+

Settling Time
6µs
Number Of Bits
8
Data Interface
I²C, Serial
Number Of Converters
8
Voltage Supply Source
Single Supply
Power Dissipation (max)
640mW
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Number Of Dac Outputs
8
Resolution
8 bit
Interface Type
Serial (I2C)
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Maximum Power Dissipation
640 mW
Minimum Operating Temperature
0 C
Supply Current
10 mA
Voltage Reference
External
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX520/MAX521 are quad/octal, 8-bit voltage-output
digital-to-analog converters (DACs) with simple 2-wire ser-
ial interfaces that allow communication between multiple
devices. They operate from a single +5V supply and their
reference input range includes both supply rails.
The MAX521 includes rail-to-rail output buffer amplifiers for
reduced system size and component count when driving
loads. The MAX520’s unbuffered voltage outputs reduce
the device’s total supply current to 4µA and provide
increased accuracy at low output currents.
The MAX520/MAX521 feature a serial interface and internal
software protocol, allowing communication at data rates up
to 400kbps. The interface, combined with the double-
buffered input configuration, allows the DAC registers to be
updated individually or simultaneously. In addition, the
devices can be put into a low-power shutdown mode that
reduces supply current to 4µA. Power-on reset ensures the
DAC outputs are at 0V when power is initially applied.
The MAX520 is available in 16-pin DIP and wide SO pack-
ages, as well as a space-saving 20-pin SSOP. The
MAX521 comes in 20-pin DIP and 24-pin SO packages, as
well as a space-saving 24-pin SSOP.
________________________Applications
19-0378; Rev 3; 9/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_________________Pin Configurations
_______________General Description
Pin Configurations continued at end of data sheet.
TOP VIEW
Minimum Component Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Automatic Test Equipment
Programmable Attenuators
DGND
AGND
OUT1
OUT0
REF1
REF0
SCL
SDA
________________________________________________________________ Maxim Integrated Products
1
3
4
5
6
7
8
2
MAX520
DIP/SO
Quad/Octal, 2-Wire Serial 8-Bit DACs
16
15
14
13
12
11
10
9
OUT2
OUT3
REF2
REF3
V
AD2
AD1
AD0
DD
with Rail-to-Rail Outputs
____________________________Features
_______________Functional Diagrams
Ordering Information continued at end of data sheet.
†
output resistance.
MAX520 “A” grade parts include a 1%-accurate, factory-trimmed
______________Ordering Information
MAX520ACPE
MAX520BCPE
MAX520ACWE
MAX520BCWE
Functional Diagrams continued at end of data sheet.
SDA
Single +5V Supply
Simple 2-Wire Serial Interface
I
Outputs Swing Rail to Rail:
1%-Accurate Trimmed Output Resistance (MAX520A)
Ultra-Low 4µA Supply Current (MAX520)
Individual DACs Have Separate Reference Inputs
Power-On Reset Clears All Latches
4µA Power-Down Mode
2
C Compatible
PART
Unbuffered Outputs (MAX520)
Buffered Outputs (MAX521)
SCL
COMPARATOR
SHIFT REGISTER
MAX520
AD0
†
ADDRESS
START/STOP
DETECTOR
8-BIT
DECODE
AD1
TEMP. RANGE
AD2
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
4
8
LATCH 1
LATCH 0
LATCH 3
LATCH 2
INPUT
1
1
INPUT
1
1
INPUT
INPUT
LATCH 0
LATCH 1
OUTPUT
OUTPUT
PIN-PACKAGE
LATCH 3
OUTPUT
LATCH 2
OUTPUT
16 Plastic DIP
16 Plastic DIP
16 Wide SO
16 Wide SO
REF2
REF1
DAC2
DAC3
DAC0
DAC1
REF3
REF0
OUT0
OUT1
OUT2
OUT3
(LSB)
TUE
1
1
1
1
1

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MAX521ACAG+ Summary of contents

Page 1

... AGND 5 DGND 6 SCL 7 SDA 8 DIP/SO Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 with Rail-to-Rail Outputs ____________________________Features Single +5V Supply Simple 2-Wire Serial Interface Compatible Outputs Swing Rail to Rail: ...

Page 2

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs ABSOLUTE MAXIMUM RATINGS V to DGND ...........................................................-0. AGND............................................................-0.3V to +6V DD OUT_ ..........................................................-0. REF_ ...........................................................-0. AD0, AD1, AD2...........................................-0. SCL, SDA to ...

Page 3

Quad/Octal, 2-Wire Serial 8-Bit DACs ELECTRICAL CHARACTERISTICS (continued ±10 4V (MAX520 REF_ L unless otherwise noted. Typical values are at T PARAMETER REFERENCE INPUTS Input Voltage Range Input Resistance Input Current ...

Page 4

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs ELECTRICAL CHARACTERISTICS (continued ±10 4V (MAX520 REF_ L unless otherwise noted. Typical values are at T PARAMETER DYNAMIC PERFORMANCE Voltage Output Slew Rate ...

Page 5

Quad/Octal, 2-Wire Serial 8-Bit DACs TIMING CHARACTERISTICS ( ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER Serial Clock Frequency Bus Free Time Between a STOP and ...

Page 6

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs ______________________________Typical Operating Characteristics (continued 5V, DAC outputs unloaded +25°C, unless otherwise noted MAX520 POSITIVE SETTLING TIME 1 s/div OUT2 = NO LOAD, REF2 = 4V, DAC ...

Page 7

Quad/Octal, 2-Wire Serial 8-Bit DACs __________________________________________Typical Operating Characteristics (V = 5V, DAC outputs unloaded MAX521 SUPPLY CURRENT vs. TEMPERATURE 5.5V DD ALL REF INPUTS = 0.6V 10 ALL DIGITAL INPUTS ALL ...

Page 8

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs ______________________________Typical Operating Characteristics (continued 5V, DAC outputs unloaded +25°C, unless otherwise noted CLOCK FEEDTHROUGH A = SCL, 400kHz, 5V/div B = OUT1, 5mV/div REF1 = 5V, ...

Page 9

Quad/Octal, 2-Wire Serial 8-Bit DACs ______________________________________________________________Pin Description PIN MAX520 DIP/SO SSOP — 14 — — — — — — — — ...

Page 10

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs _______________Detailed Description The MAX520/MAX521 use a simple 2-wire serial interface requiring only two I/O lines (2-wire bus standard microprocessor (µP) port. Figure 1 shows the timing dia- gram for signals ...

Page 11

Quad/Octal, 2-Wire Serial 8-Bit DACs START and STOP Conditions When the bus is not in use, both SCL and SDA must be high. A bus master signals the beginning of a transmis- sion with a START condition by transitioning SDA ...

Page 12

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs 0 OR AD2 AD1 AD0 0 0 SDA ADDRESS BYTE ACK START CONDITION SDA OUTPUT BYTE ACK (FULL SCALE) ( ...

Page 13

Quad/Octal, 2-Wire Serial 8-Bit DACs 0 OR AD2 ( AD1 AD0 0 0 SDA ADDRESS BYTE ACK START CONDITION 0 OR AD2 ( AD1 AD0 SDA ADDRESS BYTE ACK ...

Page 14

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs SDA ADDRESS BYTE ACK (DEVICE 0) START CONDITION SDA ACK COMMAND BYTE (ADDRESSING ...

Page 15

Quad/Octal, 2-Wire Serial 8-Bit DACs REF_ AGND SHOWN FOR ALL 1s ON DAC Figure 14. DAC Simplified Circuit Diagram ( code dependent, it must be driven by a ...

Page 16

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs DAC (1%) Figure 15a. Typical Trimming Circuit __________Applications Information Shutdown Mode In shutdown mode, the MAX520/MAX521 reference inputs are disconnected from the R-2R ladder inputs, which saves power ...

Page 17

Quad/Octal, 2-Wire Serial 8-Bit DACs ___________________________________________________Pin Configurations (continued) TOP VIEW OUT1 1 20 OUT0 2 19 REF1 MAX520 REF0 5 16 AGND DGND 13 8 SCL 12 9 SDA 10 ...

Page 18

Quad/Octal, 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs __Ordering Information (continued) † PART TEMP. RANGE PIN-PACKAGE MAX520ACAP 0°C to +70°C 20 SSOP MAX520BCAP 0°C to +70°C 20 SSOP MAX520AC/D 0°C to +70°C Dice* MAX520BC/D 0°C to +70°C Dice* MAX520AEPE -40°C ...

Page 19

Quad/Octal, 2-Wire Serial 8-Bit DACs ________________________________________________________Package Information ______________________________________________________________________________________ with Rail-to-Rail Outputs 0° - 15° Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 ...

Page 20

... 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. 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products ...

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