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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1069

58.6ksps / 14-Bit / 2-Wire Serial ADC



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MAX1069 pdf
19-2652; Rev 2; 12/10
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 VAVDD.
The four address select inputs (ADD0–ADD3) allow up
to 16 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
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
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 VAVDD
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
MAX1069AEUD+ -40°C to +85°C 14 TSSOP
MAX1069BEUD+ -40°C to +85°C 14 TSSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
INL
(LSB)
±1
±2
TOP VIEW
Pin Configuration
DGND 1
SCL 2
SDA 3
ADD2 4
ADD1 5
ADD0 6
DVDD 7
MAX1069
14 ADD3
13 REF
12 REFADJ
11 AGNDS
10 AIN
9 AGND
8 AVDD
TSSOP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.



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MAX1069 pdf
58.6ksps, 14-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
ABSOLUTE MAXIMUM RATINGS
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 (VAVDD + 0.3V)
SCL, SDA, ADD_ to DGND.......................................-0.3V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +85°C)
14-Pin TSSOP (derate 9.1mW/°C above +85°C) .........864mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses 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.
ELECTRICAL CHARACTERISTICS
(VAVDD = +4.75V to +5.25V, VDVDD = +2.7V to +5.5V, fSCL = 1.7MHz (33% duty cycle), fSAMPLE = 58.6ksps, VREF = +4.096V, external
reference applied to REF, REFADJ = AVDD, CREF = 10µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution
Relative Accuracy
(Note 2)
Differential Nonlinearity
Offset Error
INL
DNL
MAX1069A
MAX1069B
MAX1069A, no missing codes
MAX1069B, no missing codes
14 Bits
±1
LSB
±2
±1
LSB
±1
2 5 mV
Offset-Error Temperature
Coefficient
1.0 ppm/°C
Gain Error
(Note 3)
Gain Temperature Coefficient
DYNAMIC PERFORMANCE (fIN(sine wave) = 1kHz, VIN = VREF(P-P), fSAMPLE = 58.6ksps)
Signal-to-Noise Plus Distortion
SINAD
Total Harmonic Distortion
THD Up to the 5th harmonic
Spurious-Free Dynamic Range
SFDR
Signal-to-Noise Ratio
SNR
Full-Power Bandwidth
FPBW -3dB point
Full-Linear Bandwidth
SINAD > 81dB
CONVERSION RATE (Figure 11)
Conversion Time
(SCL Stretched Low)
tCONV
Fast mode
High-speed mode
Throughput Rate (Note 4)
Fast mode
fSAMPLE
High-speed mode
Internal Clock Frequency
fCLK
Track/Hold Acquisition Time
tACQ (Note 5)
±0.25
0.1
±0.5 %FSR
ppm/°C
81 84
dB
-99 -86
dB
87 102
dB
82 84
dB
4 MHz
20 kHz
7.1 7.5
5.8 6
µs
19
ksps
58.6
4 MHz
1100
ns
2 _______________________________________________________________________________________



Part Number MAX1069
Description 58.6ksps / 14-Bit / 2-Wire Serial ADC
Maker Maxim - Maxim
Total Page 20 Pages
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