Rainbow Electronics MAX5385 - Manual

General Description
The MAX5383/MAX5384/MAX5385 low-cost, 8-bit digital-
to-analog converters (DACs) in miniature 6-pin SOT23
packages have a simple 3-wire, SPI™/QSPI™/
MICROWIRE™-compatible serial interface that operates
up to 10MHz. The MAX5383 has an internal +2V refer-
ence and operates from a +2.7V to +3.6V supply. The
MAX5384 has an internal +4V reference and operates
from a +4.5V to +5.5V supply. The MAX5385 operates
over the full +2.7V to +5.5V supply range and has an
internal reference equal to 0.9
✕ V
DD
.
The MAX5383/MAX5384/MAX5385 require an extremely
low supply current of only 150µA (typ) and provide a
buffered voltage output. These devices power up at zero
code and remain there until a new code is written to the
DAC registers. This provides additional safety for appli-
cations that drive valves or other transducers that need
to be off on power-up. The MAX5383/MAX5384/
MAX5385 include a 1µA, low-power shutdown mode that
features software-selectable output loads of 1k
Ω, 100kΩ,
or 1M Ω to ground.
Applications
Automatic Tuning (VCO)
Power Amplifier Bias Control
Programmable Threshold Levels
Automatic Gain Control
Automatic Offset Adjustment
Features
♦ 8-Bit Resolution in a Miniature 6-Pin SOT23
Package
♦ Wide +2.7V to +5.5V Supply Range (MAX5385)
♦ <1µA Shutdown Mode
♦ Software-Selectable Output Resistance During
Shutdown
♦ Buffered Output Drives Resistive Loads
♦ Low-Glitch Power-On Reset to Zero DAC Output
♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
♦ < ±5% Full-Scale Error (MAX5385)
♦ < ±1LSB max INL/DNL
♦ Low 230µA (max) Supply Current
MAX5383/MAX5384/MAX5385
Low-Cost, Low-Power, 8-Bit DACs with 3-Wire
Serial Interface in SOT23
________________________________________________________________ Maxim Integrated Products 1
GND
DIN V DD
1 6
5 SCLK
OUT
MAX5383
MAX5384
MAX5385
SOT23
TOP VIEW
2
3 4
CS
Pin Configuration
GND
MC68XXXX
PCS0
V DD
OUT
SCK
MOSI
SCLK
DIN
MAX5385
+2.7V TO +5.5V
CS
Typical Operating Circuit
19-1718; Rev 2; 1/02
Ordering Information
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
PART TEMP RANGE
PIN-
PACKAGE SOT
TOP MARK
MAX5383EUT-T -40 °C to +85°C 6 SOT23 AADF
MAX5383EZT-T -40 °C to +85°C 6 SOT23-Thin AAAH
MAX5384EUT-T -40 °C to +85°C 6 SOT23 AADH
MAX5384EZT-T -40 °C to +85°C 6 SOT23-Thin AAAI
MAX5385EUT-T -40 °C to +85°C 6 SOT23 AADJ
MAX5385EZT-T -40 °C to +85°C 6 SOT23-Thin AAAJ
Selector Guide
PART INTERNAL REFERENCE
MAX5383 2V
MAX5384 4V
MAX5385 0.9 ✕ V DD
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.