MAX5115 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface

19-3586; Rev 0; 2/05
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
General Description
The MAX5115/MAX5116 quad, 8-bit, digital-to-analog
converters (DACs) feature nonvolatile registers. These
nonvolatile registers store the DAC operating modes
and output states, allowing the DACs to initialize to
specified configurations at power-up.
Precision on-chip output buffers swing rail-to-rail, and
provide 8µs settling time. The I²C*-compatible, 2-wire
serial interface allows for a maximum clock frequency
of 400kHz.
The MAX5115 has independent high and low reference
inputs allowing maximum output voltage range flexibili-
ty. The MAX5116 has single high and low reference
inputs for all DACs to minimize trace count and save
board space. The reference rails accept voltage inputs
that range from ground to the positive supply rail.
The devices operate from a single +2.7V to +5.25V sup-
ply and consume 200µA per DAC. A software-controlled
power-down mode decreases supply current to less
than 25µA. A software-controlled mute mode sets each
DAC, or both DACs simultaneously, to their respective
REFL_ voltages. The MAX5116 also includes an asyn-
chronous MUTE input, that drives all DAC outputs simul-
taneously to their respective REFL_ voltages.
The MAX5115 is available in a 20-pin QSOP, and the
MAX5116 is available in a 16-pin QSOP package. Both
devices are specified for operation over the extended
(-40°C to +85°C) temperature range.
Applications
Digital Gain and Offset Adjustments
Programmable Attenuators
Portable Instruments
Power-Amp Bias Control
ATE Calibration
Laser Biasing
Features
♦ Nonvolatile Registers Initialize DACs to Stored
States
♦ +2.7V to +5.25V Single-Supply Operation
♦ Quad 8-Bit DACs with Independent High and Low
Reference Inputs
♦ Rail-to-Rail Output Buffers
♦ Low 200µA per DAC Supply Current
♦ Power-Down Mode Reduces Supply Current to
25µA (max)
♦ 400kHz, I²C-Compatible, 2-Wire Serial Interface
♦ Asynchronous MUTE Input (MAX5116)
♦ Small 16-/20-Pin QSOP Packages
Ordering Information
PART
MAX5115EEP
MAX5116EEE
TEMP RANGE
PIN-
PACKAGE
REFERENCE
INPUTS
-40°C to +85°C 20 QSOP
4
-40°C to +85°C 16 QSOP
1
Simplified Diagram
VDD REFH
MAX5116
DAC0
NONVOLATILE/
VOLATILE
REGISTERS
DAC0
OUT0
SCL
SDA
A3
A2
A1
A0
MUTE
2-WIRE
SERIAL
INTERFACE/
CONTROL
DAC1
NONVOLATILE/
VOLATILE
REGISTERS
DAC2
NONVOLATILE/
VOLATILE
REGISTERS
DAC1
DAC2
OUT1
OUT2
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
DAC3
NONVOLATILE/
VOLATILE
REGISTERS
DAC3
OUT3
GND REFL
*Purchase of I²C components from Maxim Integrated Products, Inc., or one of its sublicensed Associate Companies, conveys a
license under the Philips I²C Patent Rights to use these components in an I²C system, provided that the system conforms to the I²C
Standard Specification defined by Philips.
________________________________________________________________ Maxim Integrated Products 1
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