MAX1069 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – 58.6ksps, 14-Bit, 2-Wire Serial ADC

19-2652; Rev 0; 10/02
58.6ksps, 14-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
General Description
The MAX1069 is a low-power, 14-bit successive-
approximation analog-to-digital converter (ADC). The
device features automatic power-down, an on-chip
4MHz clock, a +4.096V internal reference, and an
I²C™-compatible 2-wire serial interface capable of both
fast and high-speed modes.
The MAX1069 operates from a single supply and con-
sumes 5mW at the maximum conversion rate of
58.6ksps. AutoShutdown™ powers down the device
between conversions, reducing supply current to less
than 50µA at a 1ksps throughput rate. The option of a
separate digital supply voltage allows direct interfacing
with +2.7V to +5.5V digital logic.
The MAX1069 performs a unipolar conversion on its
single analog input using its internal 4MHz clock. The
full-scale analog input range is determined by the inter-
nal reference or by an externally applied reference volt-
age ranging from 1V to AV_DD.
The four address select inputs (ADD0–ADD3) allow up
to sixteen MAX1069 devices on the same bus.
The MAX1069 is packaged in a 14-pin TSSOP and
offers both commercial and extended temperature
ranges. Refer to the MAX1169 for a 16-bit device in a
pin-compatible package.
Applications
Hand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Receive Signal Strength Indicators
System Supervision
Features
o High-Speed I²C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
o +4.75V to +5.25V Single Supply
o +2.7V to +5.5V Adjustable Logic Level
o Internal +4.096V Reference
o External Reference: 1V to AV_DD
o Internal 4MHz Conversion Clock
o 58.6ksps Sampling Rate
o AutoShutdown Between Conversions
o Low Power
5.0mW at 58.6ksps
4.2mW at 50ksps
2.0mW at 10ksps
0.23mW at 1ksps
3µW in Shutdown
o Small 14-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
INL
(LSB)
MAX1069ACUD 0°C to +70°C 14 TSSOP
±1
MAX1069BCUD 0°C to +70°C 14 TSSOP
±2
MAX1069CCUD 0°C to +70°C 14 TSSOP
±3
MAX1069AEUD* -40°C to +85°C 14 TSSOP
±1
MAX1069BEUD* -40°C to +85°C 14 TSSOP
±2
MAX1069CEUD* -40°C to +85°C 14 TSSOP
±3
*Future product—contact factory for availability.
Pin Configuration
I²C is a trademark of Philips Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
TOP VIEW
DGND 1
SCL 2
SDA 3
ADD2 4
ADD1 5
ADD0 6
DV_DD 7
MAX1069
14 ADD3
13 REF
12 REFADJ
11 AGNDS
10 AIN
9 AGND
8 AV_DD
TSSOP
________________________________________________________________ Maxim Integrated Products 1
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1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.