MAX138EPL+ ,3 1/2 Digit ADC with Reference, Charge Pump, and Direct LED DriversELECTRICAL CHARACTERISTICS (MAX138IMAX139/MAX140)
(V+ = AN; TA = +25''C: test tfrrcuit of Figure ..
MAX1393ETB+ ,1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/2-Channel Single-Ended, 12-Bit, SAR ADCsFeaturesThe MAX1393/MAX1396 micropower, serial-output, 12-♦ 312.5ksps, 12-Bit Successive-Approximat ..
MAX139CPL ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterApplications MAX138CMH 0°C to +70°C 44 MOFP
5V P d P l M t MAX13BCQH (Y'C to +70°C 44 PLCC
+ ower ..
MAX139CPL ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterFeatures
. Single Supply +2.5V to +7.0V Operation
. Measures Both Positive and Negative Input
..
MAX139CPL+ ,3 1/2 Digit ADC with Reference, Charge Pump, and Direct LED DriversApplications MAXTEBCMH (Y'C to +70”C 44 MQFP
V P d P I M MAX138CQH 0% to +70°C 44 PLCC
" owere an ..
MAX139CQH ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterGeneral Description
The MAX138/MAX139 are 31/2 digit A/D converters (ADCs)
with on-board LCD (M ..
MAX4017ESA+ ,Low-Cost, High-Speed, Single-Supply, Gain of +2 Buffers with Rail-to-Rail Outputs in SOT23MAX4014/MAX4017/MAX4019/MAX402219-1284; Rev 2; 8/01Low-Cost, High-Speed, Single-Supply, Gain of +2 ..
MAX4017ESA+T ,Low-Cost, High-Speed, Single-Supply, Gain of +2 Buffers with Rail-to-Rail Outputs in SOT23General Description ________
MAX4017EUA ,Low-Cost / High-Speed / Single-Supply / Gain of +2 Buffers with Rail-to-Rail Outputs in SOT23FeaturesThe MAX4014/MAX4017/MAX4019/MAX4022 are preci-' Internal Precision Resistors for Closed-Loo ..
MAX4018EEE ,Low-Cost / High-Speed / SOT23 / Single-Supply Op Amps with Rail-to-Rail OutputsGeneral Description ________
MAX4018EEE+ ,Low-Cost, High-Speed, Single-Supply Op Amps with Rail-to-Rail OutputsApplicationsOrdering InformationSet-Top BoxesSurveillance Video SystemsTEMP PIN- TOPPARTBattery-Pow ..
MAX4018ESD ,Low-Cost / High-Speed / SOT23 / Single-Supply Op Amps with Rail-to-Rail OutputsApplications______________Ordering InformationSet-Top BoxesSOTSurveillance Video Systems TEMP. PIN- ..
MAX138CPL+-MAX138EPL+-MAX139CPL+
3 1/2 Digit ADC with Reference, Charge Pump, and Direct LED Drivers
19-0805, Rev P: 11/95
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31/2 Digit AO Converters with Bandgap
Reference and Charge-Pump Voltage Converter
General Description
The MAX138/MAX139 are 31/2 digit A/D converters (ADCs)
with on-board LCD (MAX138) and LED (MAX139) display
drivers. The MAX138/MAX139 also contain a charge-
pump voltage inverter. The charge-pump inverter allows
the MAX138/MAX139 to measure both positive and nega-
tive input voltages while operating from a single power-
supply voltage from +2.5V to +7V. The operating circuits
of the MAX138/MAX139 are similar to those of the ICL7136
and ICL7137 respectively, except the MAX138/MAX139
have an internal oscillator and an external charge-pump
capacitor connected to pins 38 and 40.
Features
. Single Supply +2.5V to +7.0V Operation
t Measures Both Positive and Negative Input
Voltages
. Charge-Pump Voltage Inverter Generates a
Negative Supply Voltage
. Internal Bandgap Reference
t On-Board Display Driver
. Low Segment Current (MAX140)
Ordering Information
MAX140 is a low segment-current version of the MAX139 PART TEMP. RANGE PIN-PACKAGE
intended for use with Iow-current LED displays. MAX138CPL 0°C to +70°C 40 Plastic DIP
Applications MAX138CMH 0°C to +70°C 44 MOFP
MAX138COH 0°C to +70°C 44 PLCC
+5V Powered Panel Meters MAX138C/D 0°C to +70°C Dice'
+3V Powered DMMs MAX138EPL -4ty'C to +85°C 40 Plastic DIP
Instruments MAX138EQH -40°C to +85°C 44 PLCC
t MAX139CPL 0°C to +70°C 40 Plastic DIP
Porfab'e Monitors MAX139CMH 0°C to +70°C 44 MQFP
Weigh Scales MAX139CQH 0°C to +70°C 44 PLCC
Digital Thermometers MAX139C/D 0°C to +70°C Dice"
. - - MAX139EPL -40°C to +85°C 40 Plastic DIP
Pin Configurations MAX139EQH -40°C to +85°C 44 PLCC
MAX14OCPL 0°C to +70°C 40 Plastic DIP
TOP VIEW V, -1 q V L0; CAP, MAX14OCMH 0°C to +70°C 44 MQFP
r m ' Ti (IN0 MAX14OCQH 0°C to +70°C 44 PLCC
Cl 3 iii' W MAX14OC/D 0°C to +70°C Dice"
ls 81 I L7i TESI MAX140EPL -40"C to +85°C 40 Plastic DIP
l A1 1; Iiil REF HI MAX140EQH -40°c to +85°C 44 PLCC
l F1 E: mnmm g REF LO Consultfactory for dice srtatiels' . . .
a Gl 1% MAX138 32 GREF Typical Operating Gireuit
1 E1 " MAX739 Trt C-REF
_ O " MAX140 Ei COMMON
1 C 97 1 WHI LCD/LEDDISPLAY
10s 82111 3fl IN LO - - - -
1 A2 j2 29] N2 "v'vV---t-- J LD LD Cl
_ F211;, iii BUFF W0 l - rl,,2l,2l,l
E2 jLi ii WI _''") MAXIM W ij
F 03 ii, -ajs.' M. ',,' MAX138
ms 83 it E gm 'i' _ ---e- W ll
l F3 F7 Ta] ca 1 3 +
'r__e_s 18 iii 1005 1 i 1
10005434 Ts, E (£__l f HE 319.“
POL 20 E 8P(MAX138) 1 T‘A,____
DIGITALGND 1 F-----
(MINUS SIGN) (MAX139/MAX140) 1 l
DIP t l L + I T
Pin 21 mustbe GND on MAX139/MAX140. -
MOFP and PLCC on last page.
ll/I/JXI/VI
Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at .
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MAX‘H 38MAX11 39/51/1111}: ‘fl 40
31/2 [Digit Mit Converters with Bandgap
Reference and GhairgeAPump Vantage Converter
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (V+ to GND) ....................... +7.5V Storage Temperature Range ............... -65'C to +160''C
Supply Voltage (V+ to GND) Lead Temperature (Soldering, 10sec.) .............. +300'C
MAX138 ...................................... +7.5V
MAX139/MAX140 .............................. +6.0V Note 1: V- is generated on the device and is equal to V+, but
Analog Input Voltage (either input) (Note 2) ......... V+ to V- opposite in polarity.
Reference Input Voltage (either input) .............. V+ to V- Note 2: Input voltages may exceed the supply voltages,
Power Dissipation (Note 3) provided the input current is limited to tlm/k.
40-an Plastic DIP ............................ 1333mW Note 3: Dissipation rating assumes device is mounted with all
44-Pin PLCC ................................ 1067mW leads soldered to printed circuit board.
44-Pin MOFP ................................. 889mW
Operating Temperature Ranges:
MAX - I .............................. 0°C to +70°C
MAX1_ J ............................. -40°C to +85°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 (MAX138/MAX139/MAX140)
(V+ = +5V; TA = +25°C; test circuit of Figure l, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
. VIN = 0.0V, TA = +25°C (Note 4) -000.0 t000.0 +0000 Digital
Zero In t Read n .
pu I g Full Scale = 200mV mm s TA s; TMAX (Note 5) -000.0 1000.0 +000.0 Reading
= TA = +25°C Note 4 999 999/1000 1000 . .
Ratiometric Reading V'N VREF, ( ) Dlgl1al
VREF = 100mV TMIN s TA S TMAX (Note 5) 998 999/1000 1001 Reading
Rollover Error (difference in reading TA = +25°C (Note 4) -1 10.2 +1
for equal positive and negative -VIN = +Vm = 200mV Counts
reading near full scale) TMIN s TA S TMAX (Note 5) 10.2
Linerity..(mt deviation from best Full Scale = 200mV or Full Scale = 2.000V (Note 6) -1 10.2 +1 Counts
straight-line fit)
Common-Mode Rejection Ratio VCM = tIV, VIN = 0V, Full Scale = 200mV 50 PNN
Noise (peak-to-peak value not - -
excee de d 95% of time) VIN _ 0V, Full Scale - 200mV 15 pV
I t L k C t V 0 TA = +25°C (Note 4) 1 10 A
ea a e rren =
npu g u IN TMIN S TA S TMAX 20 200 p
Zero Reading Drift VIN = 0, TMIN s TA s TMAX (Note 4) 0.2 pVPC
Scale-Factor Temperature VIN = 199mV, TMIN S TA S TMAX 1 mm:
Coefficient (Ext. Ref. 0ppm/°C) (Note 4) pp
V s I C t (Fi 4A) v 0 TA = +25°C 200 500 A
urren I we =
+ upp y g IN TMIN S TA S TMAX 800 u
Analog Commpp Voltage (with 250kn Between Common and Positive Supply 2.95 3.05 3.15 V
respect to positive supply)
Temperature Coefficient of Analog MAX1_ - - PL (Note 7) t20 1100
Common (with respect to positive 252k BMesen Cfmmon ppm/°C
supply an OSI Ne upp y MAX1_ - _ MH/QH =20
