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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1038

4-/12-Channel 2-Wire Serial 8-Bit ADCs


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MAX1038 pdf
19-2442; Rev 4; 5/09
EVAALVUAAILTAIOBNLEKIT
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel 2-Wire Serial 8-Bit ADCs
General Description
Features
The MAX1036–MAX1039 low-power, 8-bit, multichannel,
analog-to-digital converters (ADCs) feature internal
track/hold (T/H), voltage reference, clock, and an
I2C-compatible 2-wire serial interface. These devices
operate from a single supply and require only 350µA at
the maximum sampling rate of 188ksps. Auto-
Shutdown™ powers down the devices between conver-
sions reducing supply current to less than 1µA at low
throughput rates. The MAX1036/MAX1037 have four ana-
log input channels each, while the MAX1038/MAX1039
have twelve analog input channels. The analog inputs are
software configurable for unipolar or bipolar and single-
ended or pseudo-differential operation.
The full-scale analog input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to VDD. The MAX1037/
MAX1039 feature a 2.048V internal reference and the
MAX1036/MAX1038 feature a 4.096V internal reference.
The MAX1036/MAX1037 are available in 8-pin SOT23
packages. The MAX1038/MAX1039 are available in 16-
pin QSOP packages. The MAX1036–MAX1039 are guar-
anteed over the extended industrial temperature range
(-40°C to +85°C). Refer to MAX1136–MAX1139 for 10-bit
devices and to the MAX1236–MAX1239 for 12-bit
devices.
Applications
Handheld Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision
o High-Speed I2C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
o Single Supply
2.7V to 3.6V (MAX1037/MAX1039)
4.5V to 5.5V (MAX1036/MAX1038)
o Internal Reference
2.048V (MAX1037/MAX1039)
4.096V (MAX1036/MAX1038)
o External Reference: 1V to VDD
o Internal Clock
o 4-Channel Single-Ended or 2-Channel Pseudo-
Differential (MAX1036/MAX1037)
o 12-Channel Single-Ended or 6-Channel Pseudo-
Differential (MAX1038/MAX1039)
o Internal FIFO with Channel-Scan Mode
o Low Power
350µA at 188ksps
110µA at 75ksps
8µA at 10ksps
1µA in Power-Down Mode
o Software Configurable Unipolar/Bipolar
o Small Packages
8-Pin SOT23 (MAX1036/MAX1037)
16-Pin QSOP (MAX1038/MAX1039)
Pin Configurations and Typical Operating Circuit appear
at end of data sheet.
Ordering Information/Selector Guide
PART
PIN-PACKAGE
TUE
(LSB)
INPUT
CHANNELS
MAX1036EKA+T
8 SOT23
±2
4
MAX1037EKA+T
8 SOT23
±2
4
MAX1038AEEE+
16 QSOP
±1
12
MAX1039AEEE+
16 QSOP
±1
12
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
I2C
SLAVE ADDRESS
1100100
1100100
1100101
1100101
INTERNAL
REFERENCE (V)
4.096
2.048
4.096
2.048
TOP MARK
AAJE
AAJG
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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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MAX1038 pdf
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel 2-Wire Serial 8-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V
AIN0–AIN11, REF to
GND ......................-0.3V to the lower of (VDD + 0.3V) and +6V
SDA, SCL to GND.....................................................-0.3V to +6V
Maximum Current Into Any Pin .........................................±50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin SOT23 (derate 7.1mW/°C above +70°C).............567mW
16-Pin QSOP (derate 8.3mW/°C above +70°C).........666.7mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +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
(VDD = 2.7V to 3.6V (MAX1037/MAX1039), VDD = 4.5V to 5.5V (MAX1036/MAX1038). External reference, VREF = 2.048V
(MAX1037/MAX1039), VREF = 4.096V (MAX1036/MAX1038). External clock, fSCL = 1.7MHz, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY (Note 1)
Resolution
Relative Accuracy
Differential Nonlinearity
Offset Error
SYMBOL
CONDITIONS
INL
DNL
(Note 2)
No missing codes over temperature
MIN TYP MAX UNITS
8 Bits
±1 LSB
±1 LSB
±1.5 LSB
Offset Error Temperature
Coefficient
Gain Error
Gain Temperature Coefficient
Total Unadjusted Error
(Note 3)
MAX1036/MAX1037
TUE
MAX1038A/MAX1039A
3
±1
±0.5
±0.5
ppm/°C
±1 LSB
ppm/°C
±2
LSB
±1
Channel-to-Channel Offset
Matching
±0.1 LSB
Channel-to-Channel Gain
Matching
±0.5 LSB
Input Common-Mode Rejection
Ratio
CMRR Pseudo-differential input mode
75 dB
DYNAMIC PERFORMANCE (fIN(sine wave) = 25kHz, VIN = VREF(P-P), fSAMPLE = 188ksps, RIN = 100Ω)
Signal-to-Noise Plus Distortion
SINAD
49
dB
Total Harmonic Distortion
THD Up to the 5th harmonic
-69 dB
Spurious-Free Dynamic Range
SFDR
69 dB
Channel-to-Channel Crosstalk
(Note 4)
75 dB
Full-Power Bandwidth
-3dB point
2.0 MHz
Full-Linear Bandwidth
SINAD > 49dB
200 kHz
CONVERSION RATE
Conversion Time (Note 5)
tCONV
Internal clock
External clock
6.1
µs
4.7
2 _______________________________________________________________________________________



Part Number MAX1038
Description 4-/12-Channel 2-Wire Serial 8-Bit ADCs
Maker Maxim Integrated - Maxim Integrated
Total Page 23 Pages
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