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MAX400CSA ,Ultra Low Offset Voltage Operational AmplifierELECTRICAL CHARACTERISTICS (contlnued) 3
(VS = i15V, TA = +25°C, unless otherwise noted.) ts
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MAX1365ECM-MAX1365ECM+
Stand-Alone, 4.5-/3.5-Digit Panel Meters with 4–20mA Output
General DescriptionThe MAX1365/MAX1367 low-power, 4.5- and 3.5-digit,
panel meters feature an integrated sigma-delta analog-
to-digital converter (ADC), LED display drivers, voltage
digital-to-analog converter (DAC), and a 4–20mA
(or 0 to 16mA) current driver.
The MAX1365/MAX1367’s analog input voltage range is
programmable to either ±2V or ±200mV. The MAX1367
drives a 3.5-digit (±1999 count) display and the
MAX1365 drives a 4.5-digit (±19,999 count) display.
The ADC output directly drives the LED display as well
as the voltage DAC, which in turn drives the 4–20mA
(or 0 to 16mA) current-loop output.
In normal operation, the 0 to 16mA/4–20mA current-
loop output follows the ±2V or ±200mV analog input to
drive remote panel-meter displays, data loggers, and
other industrial controllers. For added flexibility, the
MAX1365/MAX1367 allow direct access to the DAC
output and the V/I converter input.
The sigma-delta ADC does not require external preci-
sion integrating capacitors, autozero capacitors, crystal
oscillators, charge pumps, or other circuitry commonly
required in dual-slope ADC panel-meter circuits. On-
chip analog input and reference buffers allow direct
interface with high-impedance signal sources. Excellent
common-mode rejection and digital filtering provide
greater than 100dB rejection of simultaneous 50Hz and
60Hz line noise. Other features include data hold, peak
detection, and overrange/underrange detection.
The MAX1365/MAX1367 require a 2.7V to 5.25V supply,
a 4.75V to 5.25V V/I supply, and a 7V to 30V loop sup-
ply. They are available in a space-saving (7mm x
7mm), 48-pin TQFP package and operate over the
extended (-40°C to +85°C) temperature range.
ApplicationsAutomated Test Equipment
Data-Acquisition Systems
Digital Multimeters
Digital Panel Meters
Digital Voltmeters
Industrial Process Control
FeaturesStand-Alone, Digital Panel Meter
20-Bit Sigma-Delta ADC
4.5-Digit Resolution (±19,999 Count, MAX1365)
3.5-Digit Resolution (±1999 Count, MAX1367)
No Integrating/Autozeroing Capacitors
100MΩInput Impedance
±200mV or ±2.000V Input RangeLED Display
Common-Cathode 7-Segment LED Driver
Programmable LED Current (0 to 20mA)
2.5Hz Update RateOutput DAC and Current Driver
±15-Bit DAC with 14-Bit Linear V/I Converter
Selectable 0 to 16mA or 4–20mA Current Output
Unipolar/Bipolar Modes
±50µA Zero Scale, ±40ppmFS/°C (typ)
±0.5% Gain Error, ±25ppmFS/°C (typ)
Separate 7V to 30V Supply for Current-Loop
Output2.7V to 5.25V ADC/DAC Supply4.75V to 5.25V V/I Converter SupplyInternal 2.048V Reference or External Reference48-Pin, 7mm x 7mm TQFP Package
MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mAOutput
Selector Guide19-3889; Rev 1; 1/06
PARTTEMP RANGEPIN-PACKAGE
MAX1365ECM-40°C to +85°C48 TQFP
MAX1367ECM-40°C to +85°C48 TQFP
Ordering Information
PARTRESOLUTION
(DIGITS)
PKG
CODEMAX1365ECM4.5C48-6
MAX1367ECM3.5C48-6
Pin Configuration appears at end of datasheet.
Typical Operating Circuits appear at end of datasheet.
MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mAOutput
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(AVDD= DVDD= DAC_VDD = +2.7V to +5.25V, GND = 0, VLEDV= +2.7V to +5.25V, LEDG = 0, VREF+- VREF-= 2.048V (external
reference), 4-20OUT = 7V, VREG_AMP = +5.0V, CREF+= 0.1µF, REF- = GND, CNEGV= 0.1µF. Internal clock mode, unless otherwise
noted. All specifications are at TA= TMINto TMAX. Typical values are at TA = +25°C, unless otherwise noted.)
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.
AVDD, DVDD....................................................................-0.3V to +6.0V
AIN+, AIN-, REF+, REF-.........................VNEGV to (AVDD+ 0.3V)
REG_FORCE, CMP, DAC_VDD, DACVOUT,
CONV_IN, 4-20OUT.............................-0.3V to (AVDD+ 0.3V)
EN_BPM, EN_I, REFSELE, DACDATA_SEL, INTREF, RANGE,
DPSET1, DPSET2, HOLD, PEAK, DPON,
CS_DAC...............................................-0.3V to (DVDD+ 0.3V)
NEGV.......................................................-2.6V to (AVDD+ 0.3V)
LED_EN....................................................-0.3V to (DVDD+ 0.3V)
SET...........................................................-0.3V to (AVDD+ 0.3V)
REG_AMP, REG_VDD...........................................-0.3V to +6.0V
LEDV......................................................................-0.3V to +6.0V
LEDG.....................................................................-0.3V to +0.3V
GND_DAC.............................................................-0.3V to +0.3V
GND_V/I.................................................................-0.3V to +0.3V
SEG_ to LEDG.........................................-0.3V to (VLEDV + 0.3V)
DIG_ to LEDG..........................................-0.3V to (VLEDV + 0.3V)
REF_DAC.................................................-0.3V to (AVDD+ 0.3V)
DIG_ Sink Current.............................................................300mA
DIG_ Source Current...........................................................50mA
SEG_ Sink Current .............................................................50mA
SEG_ Source Current..........................................................50mA
Maximum Current Input into Any Other Pin .......................50mA
Continuous Power Dissipation (TA= +70°C)
48-Pin TQFP (derate 22.7mW/°C above +70°C).....1818.2mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-60°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ADC ACCURACYMAX1365-19,999+19,999Noise-Free ResolutionMAX1367-1999+1999Counts
2.000V range±1Integral Nonlinearity (Note 1)INL200mV range±1Counts
Range Change Ratio(VAIN+ - VAIN- = 0.100V) on 200mV range;
(VAIN+ - VAIN- = 0.100V) on 2.0V range10:1Ratio
Rollover ErrorVAIN+ - VAIN- = full scale±1Counts
Output Noise10µVP-P
Offset Error (Zero Input Reading)VAIN+ - VAIN- = 0 (Note 2)-0+0Counts
Gain Error(Note 3)-0.5+0.5%FSR
Offset Drift (Zero Reading Drift)VAIN+ - VAIN- = 0 (Note 4)0.1µV/°C
Gain Drift±1ppm/°C
INPUT CONVERSION RATEUpdate Rate5Hz
ANALOG INPUTS (AIN+, AIN-) (bypass to GND with 0.1µF or greater capacitors)RANGE = GND-2.0+2.0AIN Input Voltage Range (Note 5)RANGE = DVDD-0.2+0.2V
AIN Absolute Input Voltage
Range to GND-2.2+2.2V
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)50Hz and 60Hz ±2%100dB
MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mAOutput
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSCommon-Mode 50Hz and 60Hz
Rejection (Simultaneously)CMRFor 50Hz and 60Hz ±2%, RSOURCE <
10kΩ150dB
Common-Mode RejectionCMRAt DC100dB
Input Leakage Current10nA
Input Capacitance10pF
Average Dynamic Input Current-20+20nA
INTERNAL REFERENCE (REF- = GND, INTREF = DVDD)REF Input VoltageVREF2.0072.0482.089V
REF Output Short-Circuit Current1mA
REF Output Temperature
CoefficientTCVREF40ppm/°C
Load RegulationISOURCE = 0 to 300µA, ISINK = 0 to 30µA6µV/µA
Line Regulation50µV/V
0.1Hz to 10Hz25Noise Voltage10Hz to 10kHz400µVP-P
EXTERNAL REFERENCE (INTREF = GND)REF Input VoltageDifferential (VREF+ - VREF-)2.048V
Absolute REF+, REF- Input
Voltage to GND (VREF+ Must Be
Greater Than VREF-)
-2.2+2.2V
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)50Hz and 60Hz ±2%100dB
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)CMRFor 50Hz and 60Hz ±2%, RSOURCE <
10kΩ150dB
Common-Mode RejectionCMRAt DC100dB
Input Leakage Current10nA
Input Capacitance10pF
Average Dynamic Input Current(Note 6)-20+20nA
CHARGE PUMPOutput VoltageNEGVCNEGV = 0.1µF to GND-2.60-2.42-2.30V
DIGITAL INPUTS (INTREF, RANGE, PEAK, HOLD, DPSET1, DPSET2)Input CurrentIINVIN = 0 or DVDD-10+10µA
Input Low VoltageVINL0.3 x
DVDDV
Input High VoltageVINH0.7 x
DVDDV
Input HysteresisVHYSDVDD = 3V200mV
ELECTRICAL CHARACTERISTICS (continued)(AVDD= DVDD= DAC_VDD = +2.7V to +5.25V, GND = 0, VLEDV= +2.7V to +5.25V, LEDG = 0, VREF+- VREF-= 2.048V (external
reference), 4-20OUT = 7V, VREG_AMP = +5.0V, CREF+= 0.1µF, REF- = GND, CNEGV= 0.1µF. Internal clock mode, unless otherwise
noted. All specifications are at TA= TMINto TMAX. Typical values are at TA = +25°C, unless otherwise noted.)
MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mAOutput
ELECTRICAL CHARACTERISTICS (continued)(AVDD= DVDD= DAC_VDD = +2.7V to +5.25V, GND = 0, VLEDV= +2.7V to +5.25V, LEDG = 0, VREF+- VREF-= 2.048V (external
reference), 4-20OUT = 7V, VREG_AMP = +5.0V, CREF+= 0.1µF, REF- = GND, CNEGV= 0.1µF. Internal clock mode, unless otherwise
noted. All specifications are at TA= TMINto TMAX. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ADC POWER SUPPLY (Note 7)AVDD VoltageAVDD2.705.25V
DVDD VoltageDVDD2.705.25V
Power-Supply Rejection AVDDPSRA(Note 8)80dB
Power-Supply Rejection DVDDPSRD(Note 8)100dB
640AVDD Current (Note 9)IAVDDStandby mode305µA
DVDD = +5.25V320
DVDD = +3.3V180DVDD Current (Note 9)IDVDD
Standby mode20
DAC POWER SUPPLYDAC Supply VoltageVDAC_VDD2.705.25V
DAC Supply Current0.100.21mA
LINEAR REGULATOR AND V/I CONVERTER POWER REQUIREMENTSREG_AMP Supply VoltageVREG_AMP4.755.25V
REG_AMP Supply Current0.190.30mA
REG_VDD Supply VoltageVREG_VDD5.20V
REG_VDD Supply CurrentIncludes 20mA programmed current25.227.4mA
LED DRIVERSLED Supply VoltageVLEDV2.705.25V
LED Shutdown Supply CurrentISHDN10µA
LED Supply CurrentILEDV176180mA
MAX1365512Display Scan RatefOSCMAX1367640Hz
Segment Current Slew RateISEG/∆t25mA/µs
DIG_ Voltage LowVDIG0.1780.300V
Segment-Drive Source-Current
Matching∆ISEG3±12%
Segment-Drive Source CurrentISEGVLEDV - VSEG = 0.6V, RSET = 25kΩ15.021.525.5mA
LED Drivers Bias CurrentFrom AVDD120µA
Interdigit Blanking Time4µs
MAX1365/MAX1367
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mAOutput
ELECTRICAL CHARACTERISTICS (continued)(AVDD= DVDD= DAC_VDD = +2.7V to +5.25V, GND = 0, VLEDV= +2.7V to +5.25V, LEDG = 0, VREF+- VREF-= 2.048V (external
reference), 4-20OUT = 7V, VREG_AMP = +5.0V, CREF+= 0.1µF, REF- = GND, CNEGV= 0.1µF. Internal clock mode, unless otherwise
noted. All specifications are at TA= TMINto TMAX. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DAC OUTPUT ACCURACYZero-Scale Error4–20mA or 0 to 16mA mode, TA = +25°C±50µA
Zero-Scale Error Tempco±40p p mFS /° C
Gain Error4–20mA or 0 to 16mA mode, TA = +25°C±0.5%FS
Gain-Error Tempco±25p p mFS /° C
Span Linearity±2±4µA
Power-Supply RejectionPSRVEXT = 7V to 30V4µA/V
Signal Path Noise10pF to GND on 4-20OUT2.0µARMS
4–20mA Current LimitLimited to 12.5 x VREF / 1.28kΩ20mA
Note 1:Integral nonlinearity is the deviation of the analog value at any code from its theoretical value after nulling the gain error and
offset error.
Note 2:Offset calibrated.
Note 3:Offset nulled.
Note 4:Drift error is eliminated by recalibration at the new temperature.
Note 5:The input voltage range for the analog inputs is given with respect to the voltage on the negative input of the differential pair.
Note 6:VAIN+or VAIN-= -2.2V to +2.2V. VREF+or VREF-= -2.2V to +2.2V. All input structures are identical. Production tested on
AIN+ and REF+ only. VREF+ must always be greater than VREF-.
Note 7: Power-supply currents are measured with all digital inputs at either GND or DVDD.
Note 8: Measured at DC by changing the power-supply voltage from 2.7V to 5.25V and measuring the effect on the conversion errorwith external reference. PSRR at 50Hz and 60Hz exceeds 120dB with filter notches at 50Hz and 60Hz (Figure1).
Note 9: LED drivers are disabled.
