MAX5812LEUT-T Maxim Integrated, MAX5812LEUT-T Datasheet

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MAX5812LEUT-T

Manufacturer Part Number
MAX5812LEUT-T
Description
Digital to Analog Converters - DAC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX5812LEUT-T

Number Of Converters
1
Number Of Dac Outputs
1
Resolution
12 bit
Interface Type
Serial (2-Wire, I2C)
Settling Time
12 us
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOT-23
Minimum Operating Temperature
- 40 C
Output Type
Voltage
Supply Voltage - Max
5.5 V
Supply Voltage - Min
2.7 V
Voltage Reference
External

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX5812LEUT-T
Manufacturer:
MAXIM
Quantity:
5 321
The MAX5812 is a single, 12-bit voltage-output, digital-to-
analog converter (DAC) with an I
interface that operates at clock rates up to 400kHz. The
device operates from a single 2.7V to 5.5V supply and
draws only 100µA at V
down mode decreases current consumption to less than
1µA. The MAX5812 features three software-selectable
power-down output impedances: 100kΩ, 1kΩ, and high
impedance. Other features include an internal precision
Rail-to-Rail
that powers up the DAC in the 100kΩ power-down mode.
The MAX5812 features a double-buffered I
serial interface that allows multiple devices to share a sin-
gle bus. All logic inputs are CMOS-logic compatible and
buffered with Schmitt triggers, allowing direct interfacing
to optocoupled and transformer-isolated interfaces. The
MAX5812 minimizes digital noise feedthrough by discon-
necting the clock (SCL) signal from the rest of the device
when an address mismatch is detected.
The MAX5812 is specified over the extended temperature
range of -40°C to +85°C and is available in a space-sav-
ing 6-pin SOT23 package. Refer to the MAX5811 for the
10-bit version.
19-2340; Rev 0; 1/02
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Operated Equipment
SDA
®
output buffer and a power-on reset circuit
µC
Typical Operating Circuit
SCL
V
DD
________________________________________________________________ Maxim Integrated Products
R
P
DD
General Description
R
P
= 3.6V. A low-power power-
R
R
R
R
S
S
S
S
SCL
SDA
SCL
SDA
2
C™-compatible 2-wire
Applications
MAX5812
MAX5812
12-Bit Low-Power, 2-Wire, Serial
OUT
OUT
V
V
DD
DD
2
C-compatible
V
DD
o Ultra-Low Supply Current
o 300nA Low-Power Power-Down Mode
o Single 2.7V to 5.5V Supply Voltage
o Fast 400kHz I
o Schmitt-Trigger Inputs for Direct Interfacing to
o Rail-to-Rail Output Buffer Amplifier
o Three Software-Selectable Power-Down Output
o Read-Back Mode for Bus and Data Checking
o Power-On Reset to Zero
o Miniature 6-Pin SOT23 Package
Selector Guide appears at end of data sheet.
Functional Diagram appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I
MAX5812LEUT
MAX5812MEUT
MAX5812NEUT
MAX5812PEUT
2
C is a trademark of Philips Corporation.
Interface
Optocouplers
Impedances
TOP VIEW
100µA at V
130µA at V
100kΩ, 1kΩ, and High Impedance
PART
Voltage-Output DAC
GND
SDA
V
DD
DD
DD
2
C-Compatible 2-Wire Serial
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
1
2
3
= 3.6V
= 5.5V
Ordering Information
MAX5812
SOT23
Pin Configuration
PIN-
PACKAGE
6 SOT23
6 SOT23
6 SOT23
6 SOT23
6
5
4
OUT
ADD
SCL
Features
MARK
AAYT
AAYV
AAYX
AAYZ
TOP
1

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MAX5812LEUT-T Summary of contents

Page 1

... High Impedance o Read-Back Mode for Bus and Data Checking o Power-On Reset to Zero o Miniature 6-Pin SOT23 Package Applications PART MAX5812LEUT MAX5812MEUT MAX5812NEUT MAX5812PEUT Selector Guide appears at end of data sheet. Functional Diagram appears at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ...

Page 2

Low-Power, 2-Wire, Serial Voltage-Output DAC ABSOLUTE MAXIMUM RATINGS V , SCL, SDA to GND ............................................-0.3V to +6V DD OUT, ADD to GND ........................................-0. Maximum Current Into Any Pin ...........................................50mA Continuous Power Dissipation (T = +70°C) A 6-Pin ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, GND = +5V +25°C.) (Note PARAMETER SYMBOL Digital Feedthrough Digital-to-Analog Glitch Impulse POWER SUPPLIES Supply Voltage Range Supply Current with No Load ...

Page 4

Low-Power, 2-Wire, Serial Voltage-Output DAC (V = +5V 5kΩ +25°C INTEGRAL NONLINEARITY vs. INPUT CODE 1024 2048 3072 4096 INPUT CODE DIFFERENTIAL ...

Page 5

R = 5kΩ +25°C GAIN ERROR vs. TEMPERATURE -2.0 -1.6 -1.2 -0.8 -0.4 NO LOAD 0 -40 - TEMPERATURE (°C) SUPPLY CURRENT vs. INPUT CODE 120 100 80 60 ...

Page 6

Low-Power, 2-Wire, Serial Voltage-Output DAC (V = +5V 5kΩ +25°C MAJOR CARRY TRANSITION (POSITIVE) MAX5812 toc19 OUT 5mV/div 2µs/div C = 200pF CODE = 7FF hex TO 800 hex LOAD R = ...

Page 7

PIN NAME 1 V Power Supply and DAC Reference Input DD 2 GND Ground 3 SDA Bidirectional Serial Data I/O 4 SCL Serial Clock Line 5 ADD Address Select. A logic high sets the address LSB logic ...

Page 8

Low-Power, 2-Wire, Serial Voltage-Output DAC SDA t SU, DAT t LOW SCL t HIGH t HD, STA START CONDITION Figure 1. Two-Wire Serial lnterface Timing Diagram and a serial clock line (SCL). The MAX5812 is ...

Page 9

SDA with SCL high. A STOP condition is a low-to-high transition on SDA while SCL is high (Figure 2). A START condition from the master signals the beginning of a transmission to the MAX5812. The master terminates ...

Page 10

Low-Power, 2-Wire, Serial Voltage-Output DAC Table 3. Command Byte Definitions SERIAL DATA INPUT D11/PD1* DAC DATA DAC DATA DAC DATA ...

Page 11

MSB MSB MSB Figure 7. Example Read Word Data Sequence IN OUT MAX6030/ MAX6050 GND Figure 8. Powering the MAX5812 from An External Reference ...

Page 12

... Use a ground plane to ensure that the ground return from GND to the power supply ground is short and low impedance. Bypass V with a 0.1µF capacitor to DD ground as close to the device as possible. Selector Guide PART MAX5812LEUT MAX5812MEUT MAX5812NEUT MAX5812PEUT 12 ______________________________________________________________________________________ V DD MUX AND DAC ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2002 Maxim Integrated Products ...

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