MAX1178AEUP ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeELECTRICAL CHARACTERISTICS(AV = DV = +5V ±5%, external reference = +4.096V, C = 10µF, C = 0.1µF, V ..
MAX1178AEUP+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeELECTRICAL CHARACTERISTICS(AV = DV = +5V ±5%, external reference = +4.096V, C = 10µF, C = 0.1µF, V ..
MAX1178AEUP+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeApplicationsTemperature Sensing and Monitoring+5V ANALOG +5V DIGITALIndustrial Process ControlI/O M ..
MAX1179ACUI+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Rangeapplications.D9 2 27D6The MAX1179/MAX1187/MAX1189 are available in aD5D10 3 2628-pin TSSOP package ..
MAX1179AEUI+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeApplicationsD14 7 22 D1D15 8 21 D0Temperature Sensing and MonitoringR/C 9 20 DVDDIndustrial Process ..
MAX1179AEUI+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeELECTRICAL CHARACTERISTICS(AV = DV = +5V ±5%, external reference = +4.096V, C = 10µF, C = 0.1µF, V ..
MAX3488EESA ,3.3V-Powered / 15kV ESD-Protected / 12Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3488EESA+ ,3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3488EESA+T ,3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3490CPA ,3.3V-Powered / 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3490CPA ,3.3V-Powered / 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3490CPA+ ,3.3V Powered, 10Mbps and Slew-Rate Limited, True RS-485/RS-422 Transceivers
MAX1178ACUP-MAX1178AEUP
16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range
General DescriptionThe MAX1178/MAX1188 16-bit, low-power, successive-
approximation analog-to-digital converters (ADCs) fea-
ture automatic power-down, a factory-trimmed internal
clock, and a byte-wide parallel interface. The devices
operate from a single +4.75V to +5.25V analog supply
and feature a separate digital supply input for direct
interface with a +2.7V to +5.25V digital logic.
The MAX1188 accepts a bipolar analog input voltage
range of ±10V, while the MAX1178 accepts a bipolar
analog input voltage range of ±5V. All devices consume
no more than 26.5mW at a sampling rate of 135ksps
when using an external reference, and 31mW when using
the internal +4.096V reference. AutoShutdown™ reduces
supply current to 0.4mA at 10ksps.
The MAX1178/MAX1188 are ideal for high-perfor-
mance, battery-powered, data-acquisition applications.
Excellent AC performance (THD = -100dB) and DC
accuracy (±2 LSB INL) make the MAX1178/MAX1188
ideal for industrial process control, instrumentation, and
medical applications.
The MAX1178/MAX1188 are available in a 20-pin
TSSOP package and are fully specified over the -40°C
to +85°C extended temperature range and the 0°C to
+70°C commercial temperature range.
ApplicationsTemperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
FeaturesByte-Wide Parallel InterfaceAnalog Input Voltage Range: ±10V, ±5VSingle +4.75V to +5.25V Analog Supply VoltageInterface with +2.7V to +5.25V Digital Logic±2 LSB INL ±1 LSB DNL Low Supply Current (max)
2.9mA (External Reference)
3.8mA (Internal Reference)
5µA AutoShutdown ModeSmall Footprint20-Pin TSSOP Package
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
Typical Operating Circuit19-2755; Rev 1; 8/03
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information
Pin Configuration and Functional Diagram appear at end of
data sheet.
Ordering Information continued at end of data sheet.
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
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.
AVDDto AGND.........................................................-0.3V to +6V
DVDDto DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AIN to AGND.....................................................-16.5V to +16.5V
REF, REFADJ to AGND............................-0.3V to (AVDD+ 0.3V)CS, R/C, HBEN to DGND.........................................-0.3V to +6V
D_, EOCto DGND...................................-0.3V to (DVDD+ 0.3V)
Maximum Continuous Current into Any Pin........................50mA
Continuous Power Dissipation (TA= +70°C)
TSSOP (derate 10.9mW/°C above +70°C)..................879mW
Operating Temperature Ranges
MAX11_ _ _CUP..................................................0°C to +70°C
MAX11_ _ _EUP...............................................-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= DVDD= +5V ±5%, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD, TA= TMINto TMAX,
unless otherwise noted. Typical values are at TA= +25°C.)
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
ELECTRICAL CHARACTERISTICS (continued)(AVDD= DVDD= +5V ±5%, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD, TA= TMINto TMAX,
unless otherwise noted. Typical values are at TA= +25°C.)
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
TIMING CHARACTERISTICS (Figures 1 and 2)(AVDD= +4.75V to +5.25V, DVDD= +2.7V to AVDD, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD,
CLOAD= 20pF, TA= TMINto TMAX.)
ELECTRICAL CHARACTERISTICS (continued)(AVDD= DVDD= +5V ±5%, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD, TA= TMINto TMAX,
Note 1:Maximum specification is limited by automated test equipment.
Note 2:To ensure best performance, finish reading the data and wait tBRbefore starting a new acquisition.
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
INL vs. CODEMAX1178/88 toc01
INL (LSB)20,00030,00040,00010,00050,00060,000
CODE
DNL vs. CODEMAX1178/88 toc02
DNL (LSB)20,00010,00040,00050,00060,00030,000
CODE
SUPPLY CURRENT (AVDD + DVDD)
vs. TEMPERATURE
MAX1178/88 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
SUPPLY CURRENT (AVDD + DVDD)
vs. SAMPLE RATEMAX1178/88 toc04
SAMPLE RATE (ksps)
SUPPLY CURRENT (mA)
SHUTDOWN CURRENT (AVDD + DVDD)
vs. TEMPERATURE
MAX1178/88 toc05
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (
OFFSET ERROR vs. TEMPERATURE
MAX1178/88 toc06
TEMPERATURE (°C)
OFFSET ERROR (mV)
GAIN ERROR vs. TEMPERATURE
MAX1178/88 toc07
TEMPERATURE (°C)
GAIN ERROR (%FSR)
INTERNAL REFERENCE
vs. TEMPERATURE
MAX1178/88 toc08
TEMPERATURE (°C)
INTERNAL REFERENCE (V)
FFT AT 1kHz
MAX1178/88 toc09
FREQUENCY (kHz)
MAGNITUDE (dB)
Typical Operating Characteristics(Typical Operating Circuit, AVDD= DVDD= +5V, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD,
CLOAD= 20pF. Typical values are at TA= +25°C, unless otherwise noted.)
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
Typical Operating Characteristics (continued)(Typical Operating Circuit, AVDD= DVDD= +5V, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD,
CLOAD= 20pF. Typical values are at TA= +25°C, unless otherwise noted.)
Detailed Description
Converter OperationThe MAX1178/MAX1188 use a successive-approxima-
tion (SAR) conversion technique with an inherent track-
and-hold (T/H) stage to convert an analog input into a
16-bit digital output. Parallel outputs provide a high-
speed interface to microprocessors (µPs). The Func-
tional Diagramshows a simplified internal architecture of
the MAX1178/MAX1188. Figure 3 shows a typical oper-
ating circuit for the MAX1178/MAX1188.
Analog Input
Input ScalerThe MAX1178/MAX1188 have an input scaler, which
allows conversion of true bipolar input voltages and
input voltages greater than the power supply, while
operating from a single +5V analog supply. The input
scaler attenuates and shifts the analog input to match
the input range of the internal digital-to-analog converter
(DAC). The MAX1178 input voltage range is ±5V, while
the MAX1188 input voltage range is ±10V. Figure 4
shows the equivalent input circuit of the MAX1178/
MAX1188. This circuit limits the current going into or
out of AIN to less than 1.8mA.
Track and Hold (T/H)In track mode, the internal hold capacitor acquires the
analog signal (Figure 4). In hold mode, the T/H switch-
es open and the capacitive DAC samples the analog
input. During the acquisition, the analog input (AIN)
charges capacitor CHOLD. The acquisition ends on the
second falling edge of CS. At this instant, the T/H
switches open. The retained charge on CHOLDrepre-
sents a sample of the input. In hold mode, the capaci-
tive DAC adjusts during the remainder of the conversion
time to restore node T/H OUT to zero within the limits of
16-bit resolution. Force CSlow to put valid data on the
bus after conversion is complete.
MAX1178/MAX1188
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
