19-1432; Rev 0; 3/99
S in g le -S u p p ly, Lo w -P o w e r,
S e ria l 8 -Bit ADCs
6/MAX107
Ge n e ra l De s c rip t io n
Fe a t u re s
The MAX1106/MAX1107 low-power, 8-bit, single-channel,
analog-to-digital converters (ADCs) feature an internal
track/hold (T/H), voltage reference, clock, and serial inter-
face. The MAX1106 is specified from +2.7V to +3.6V and
consumes only 96µA. The MAX1107 is specified from
+4.5V to +5.5V and consumes only 107µA. The analog
inputs are pin-configurable, allowing unipolar and single-
ended or differential operation.
♦ Single Supply: +2.7V to +3.6V (MAX1106)
+4.5V to +5.5V (MAX1107)
♦ Low Power: 96µA at +3V and 25ksps
0.5µA in Power-Down Mode
♦ Pin-Programmable Configuration
♦ 0 to V
Input Voltage Range
DD
The full-scale analog input range is determined by the
internal reference of +2.048V (MAX1106) or +4.096V
(MAX1107), or by an externally applied reference rang-
♦ Internal Track/Hold
♦ Internal Reference: +2.048V (MAX1106)
+4.096V (MAX1107)
ing from 1V to V . The MAX1106/MAX1107 also feature
DD
a pin-selectable power-down mode that reduces power
consumption to 0.5µA when the device is not in use. The
3-wire serial interface directly connects to SPI™, QSPI™,
a nd MICROWIRE™ d e vic e s without e xte rna l log ic .
Conversions up to 25ksps are performed using the inter-
nal clock.
♦ 1V to V
Reference Input Range
DD
♦ SPI/QSPI/MICROWIRE-Compatible Serial Interface
♦ Small 10-Pin µMAX Package
Ord e rin g In fo rm a t io n
The MAX1106/MAX1107 are available in a 10-pin µMAX
p a c ka g e with a footp rint tha t is jus t 20% of a n
8-pin plastic DIP.
PART
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
MAX1106CUB
MAX1106EUB
MAX1107CUB
MAX1107EUB
10 µMAX
Ap p lic a t io n s
Portable Data Logging
10 µMAX
10 µMAX
Hand-Held Measurement Devices
Medical Instruments
System Diagnostics
Fu n c t io n a l Dia g ra m
Solar-Powered Remote Systems
4–20mA-Powered Remote Systems
Receive-Signal-Strength Indicators
V
DD
CONVST
SCLK
OUTPUT
SHIFT
REGISTER
P in Co n fig u ra t io n
DOUT
SHDN
MAX1106
MAX1107
TOP VIEW
INTERNAL
OSCILLATOR
V
1
2
3
4
5
10 SCLK
DD
CONTROL
LOGIC
IN+
IN-
9
8
7
6
DOUT
MAX1106
MAX1107
SAR
IN+
T/H
ANALOG
SHDN
CONVST
REFIN
INPUT
MUX
GND
IN-
CHARGE
REDISTRIBUTION
DAC
REFOUT
REFOUT
INTERNAL
REFERENCE
µMAX
REFIN
GND
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.