19-1873; Rev 0; 12/00
8-Bit CODECs
General Description
Features
The MAX1102/MAX1103/MAX1104 CODECs provide
both an 8-bit analog-to-digital converter (ADC) and an
8-bit digital-to-analog converter (DAC) with a 4-wire
logic interface. The MAX1102/MAX1103 include an
onboard +2V/+4V reference, providing a well-regulat-
ed, low noise reference for both the ADC and DAC.
The MAX1104 offers ratiometric conversion, with the
o 8-Bit ADC
±±1LB ꢀI1
Built-ꢀn Track-and-Hold
48dB of LꢀIAD
o 8-Bit DAC
±±1LB ꢀI1
55dB of LFDR
reference internally connected to V
.
DD
o ꢀnternal Conversion Clock
The MAX1102/MAX1103/MAX1104 are low-cost, low-
power CODECs for use with microcontrollers (µCs).
They allow for greater flexibility when selecting a µC.
Less expensive µCs without onboard converters can be
used while maintaining overall system performance.
o Lingle-Lupply Operation
+2.7V to +3.6V (MAX±±02)
+4.5V to +5.5V (MAX±±03)
+2.7V to +5.5V (MAX±±04)
o 1ow Power Consumption
0.5mA at 25ksps
The MAX1102 operates from a single +2.7V to +3.6V
supply, the MAX1103 operates from a +4.5V to +5.5V
supply, and the MAX1104 operates from a +2.7V to
+5.5V supply. The MAX1102/MAX1103 incorporate a
±µA Lhutdown Mode
o 6MHz 4-Wire LPꢀ™, QLPꢀ™, and MꢀCROWꢀRE™
V
monitor in addition to AIN for power supply moni-
Compatible ꢀnterface
DD
toring. All devices feature a low 18µA standby mode,
where both data converters are disabled while the ref-
erence remains active, and three shutdown modes:
ADC disabled, DAC disabled, and complete shutdown
(1µA). A quick 10µs wake-up time allows the
MAX1102/MAX1103/MAX1104 to cycle in and out of
shutdown even during short-duration idle times.
o Compact 8-Pin µMAX Package
o ꢀnternal Voltage Reference
+2V: MAX±±02
+4V: MAX±±03
o Power-Lupply Monitor (MAX±±02/MAX±±03)
o Rail-to-Rail® DAC Output Buffer
The MAX1102/MAX1103/MAX1104 are available in a
space-saving 8-pin µMAX package.
Ordering Information
TEMP.
RANGE
PIN-
PACKAGE
________________________Applications
PART
REFERENCE
Analog I/O for Microcontrollers
Analog System Signal Supervision
Voice Recording and Playback
MAX1102EUA
MAX1103EUA
MAX1104EUA
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
+2V
+4V
V
DD
Functional Diagram
Pin Configuration
V
DD
TOP VIEW
V
DD/2
MAX1102
MAX1103
MAX1104
CS
SCLK
DIN
ADC
DAC
T/H
SERIAL
INTERFACE
AND
CONTROL
LOGIC
AIN
V
1
2
3
4
8
7
6
5
DIN
DD
VOLTAGE
REFERENCE
GND
AIN
DOUT
SCLK
CS
MAX1102
MAX1103
MAX1104
DAC
LATCH
AOUT
DOUT
OUT
µMAX
GND
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________ Maxim Integrated Products
±
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.