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MAX1169AEUD-MAX1169BCUD
58.6ksps, 16-Bit, 2-Wire Serial ADC in a 14-Pin TSSOP
MAX1169
58.6ksps, 16-Bit,
2-Wire Serial ADC in a 14-Pin TSSOP19-2654; Rev 0; 10/02
General DescriptionThe MAX1169 is a low-power, 16-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 MAX1169 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 MAX1169 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 AVDD.
The four address select inputs (ADD0 to ADD3) allow
up to 16 MAX1169 devices on the same bus.
The MAX1169 is packaged in a 14-pin TSSOP and
offers both commercial and extended temperature
ranges. Refer to the MAX1069 data sheet for a 14-bit
device in a pin-compatible package.
ApplicationsHand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision
FeaturesHigh-Speed I2C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode+4.75V to +5.25V Single Supply+2.7V to +5.5V Adjustable Logic LevelInternal +4.096V ReferenceExternal Reference: 1V to AVDDInternal 4MHz Conversion Clock58.6ksps Sampling RateAutoShutdown Between ConversionsLow Power
5.0mW at 58.6ksps
4.2mW at 50ksps
2.0mW at 10ksps
0.23mW at 1ksps
3µW in ShutdownSmall 14-Pin TSSOP Package
Ordering Information
Pin ConfigurationAutoShutdown is a trademark of Maxim Integrated Products, Inc.
*Future product—contact factory for availability.
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
ABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
AVDD to AGND.........................................................-0.3V to +6V
DVDD to DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AGNDS to AGND...................................................-0.3V to +0.3V
AIN, REF, REFADJ to AGND....................-0.3V to (AVDD+ 0.3V)
SCL, SDA, ADD_ to DGND.......................................-0.3V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA= +70°C)
14-Pin TSSOP (derate 9.1mW/°C above +70°C).........727mW
Operating Temperature Ranges
MAX1169_CUD ..................................................0°C to +70°C
MAX1169_EUD................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.5V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external ref-
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
ELECTRICAL CHARACTERISTICS (continued)(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.5V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external ref-
erence applied to REF, REFADJ = AVDD, CREF= 10µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
ELECTRICAL CHARACTERISTICS (continued)(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.5V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external ref-
erence applied to REF, REFADJ = AVDD, CREF= 10µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
Note 1:DC accuracy is tested at AVDD= +5.0V and DVDD= +3.0V. Performance at power-supply tolerance limits is guaranteed
by power-supply rejection test.
Note 2:Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range and
offset have been calibrated.
Note 3:Offset nullified.
Note 4:One sample is achieved every 18 clocks in continuous conversion mode:
Note 5:The track/hold acquisition time is two SCL cycles as illustrated in Figure 11:
Note 6:A filter on SDA and SCL delays the sampling instant and suppresses noise spikes less than 10ns in high-speed mode and
50ns in fast mode.
Note 7:ADC performance is limited by the converter’s noise floor, typically 225µVP-P.
Note 8:
ELECTRICAL CHARACTERISTICS (continued)(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.5V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external ref-
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
Note 9:A master device must provide a data hold time for SDA (referred to VILof SCL) in order to bridge the undefined region of
SCL’s falling edge (see Figure 1).
Note 10:CB= total capacitance of one bus line in pF. tRand tFmeasured between 0.3 ✕DVDDand 0.7 ✕DVDD.
Note 11:fSCLmust meet the minimum clock low time plus the rise/fall times.
ELECTRICAL CHARACTERISTICS (continued)(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.5V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external ref-
erence applied to REF, REFADJ = AVDD, CREF= 10µF, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
ANALOG SUPPLY CURRENT vs. ANALOG
SUPPLY VOLTAGE (INTERNAL REFERENCE)MAX1169 toc01
AVDD (V)
IAVDD
(mA)
ANALOG SUPPLY CURRENT vs. ANALOG
SUPPLY VOLTAGE (EXTERNAL REFERENCE)
MAX1169 toc02
AVDD (V)
IAVDD
DIGITAL SUPPLY CURRENT
vs. DIGITAL SUPPLY VOLTAGE
MAX1169 toc04
DVDD (V)
IDVDD
OFFSET ERROR
vs. TEMPERATURE
MAX1169 toc06
TEMPERATURE (°C)
OFFSET ERROR (35-1510
GAIN ERROR
vs. TEMPERATURE
MAX1169 toc07
TEMPERATURE (°C)
GAIN ERROR (% FSR)35-1510
Typical Operating Characteristics
(DVDD= +3.0V, AVDD= +5.0V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external reference applied to
REF, REFADJ = AVDD, CREF= 10µF, TA= +25°C, unless otherwise noted.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
Typical Operating Characteristics (continued)(DVDD= +3.0V, AVDD= +5.0V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external reference applied to
REF, REFADJ = AVDD, CREF= 10µF, TA= +25°C, unless otherwise noted.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
INTERNAL +4.096V REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGEMAX1169 toc12
AVDD (V)
REF
(V)
INTERNAL REFERENCE VOLTAGE
vs. REF LOAD
MAX1169 toc13
IREF (mA)
REF
(V)4321
EXTERNAL REFERENCE CURRENT
vs. EXTERNAL REFERENCE VOLTAGE
MAX1169 toc14
VREF (V)
IREF432106
EXTERNAL REFERENCE CURRENT AND
REFERENCE VOLTAGE vs. VREFADJMAX1169 toc15
VREFADJ (V)
IREFADJ
REF
(V)
Typical Operating Characteristics (continued)
(DVDD= +3.0V, AVDD= +5.0V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external reference applied to
REF, REFADJ = AVDD, CREF= 10µF, TA= +25°C, unless otherwise noted.)
MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
Typical Operating Characteristics (continued)(DVDD= +3.0V, AVDD= +5.0V, fSCL= 1.7MHz (33% duty cycle), fSAMPLE= 58.6ksps, VREF= +4.096V, external reference applied to
REF, REFADJ = AVDD, CREF= 10µF, TA= +25°C, unless otherwise noted.)
