MAX1177AEUP ,16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input RangeELECTRICAL CHARACTERISTICS(AV = DV = +5V ±5%, external reference = +4.096V, C = 10µF, C = 0.1µF, V ..
MAX1177AEUP+ ,16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input Rangefeatures a separate digital supply input for direct♦ ±3 LSB INL interface with +2.7V to +5.25V digi ..
MAX1178ACUP ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeApplicationsTemperature Sensing and Monitoring+5V ANALOG +5V DIGITALIndustrial Process ControlI/O M ..
MAX1178ACUP+ ,16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeMAX1178/MAX118819-2755; Rev 1; 8/0316-Bit, 135ksps, Single-Supply ADCs withBipolar Analog Input Ran ..
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 ..
MAX3488ECSA ,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 and Slew-Rate-Limited True RS-485/RS-422 Transceivers
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
MAX1177ACUP-MAX1177AEUP
16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input Range
General DescriptionThe MAX1177 is a 16-bit, low-power, successive-
approximation analog-to-digital converter (ADC) featur-
ing automatic power-down, a factory-trimmed internal
clock, and a byte-wide parallel interface. The device
operates from a single +4.75V to +5.25V analog supply
and features a separate digital supply input for direct
interface with +2.7V to +5.25V digital logic.
The MAX1177 accepts an analog input voltage range
from 0 to +10V. It consumes no more than 26.5mW at a
sampling rate of 135ksps when using an external refer-
ence, and 31mW when using the internal +4.096V refer-
ence. AutoShutdown™ reduces supply current to
0.4mA at 10ksps.
The MAX1177 is ideal for high-performance, battery-
powered, data-acquisition applications. Excellent AC
performance (THD = -100dB) and DC accuracy (±3
LSB INL) make this device ideal for industrial process
control, instrumentation, and medical applications.
The MAX1177 is available in a 20-pin TSSOP package
and is 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: 0 to +10VSingle +4.75V to +5.25V Analog Supply VoltageInterfaces with +2.7V to +5.25V Digital Logic±3 LSB INL ±1 LSB DNL Low Supply Current (max)
2.9mA (External Reference)
3.8mA (Internal Reference)
5µA AutoShutdown ModeSmall Footprint20-Pin TSSOP Package
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with 0 to 10V Input Rangeypical Operating Circuit19-2597; Rev 0; 8/03
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information
Pin Configuration and Functional Diagram appear at end of
data sheet.
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with to 10V 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
MAX1177_CUP...................................................0°C to +70°C
MAX1177_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,
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with 0 to 10V 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.)
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with to 10V 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.)
Note 2:To ensure best performance, finish reading the data and wait tBRbefore starting a new acquisition.
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.)
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with 0 to 10V Input Range
SUPPLY CURRENT (AVDD + DVDD)
vs. SAMPLE RATEMAX1177 toc04
SAMPLE RATE (ksps)
SUPPLY CURRENT (mA)
SHUTDOWN CURRENT (AVDD + DVDD)
vs. TEMPERATURE
MAX1177 toc05
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (
OFFSET ERROR vs. TEMPERATURE
MAX1177 toc06
TEMPERATURE (°C)
OFFSET ERROR (mV)
GAIN ERROR vs. TEMPERATURE
MAX1177 toc07
TEMPERATURE (°C)
GAIN ERROR (%FSR)
INTERNAL REFERENCE
vs. TEMPERATURE
MAX1177 toc08
TEMPERATURE (°C)
INTERNAL REFERENCE (V)
FFT AT 1kHz
MAX1177 toc09
FREQUENCY (kHz)
MAGNITUDE (dB)
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.)
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with to 10V Input Range
Pin Description
Detailed Description
Converter OperationThe MAX1177 uses a successive-approximation (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 Functional Diagramshows a
simplified internal architecture of the MAX1177. Figure 3
shows a typical operating circuit for the MAX1177.
Analog Input
Input ScalerThe MAX1177 has an input scaler, which allows conver-
sion of input voltages ranging from 0 to 10V, while oper-
ating 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).
Figure 4 shows the equivalent input circuit of the
MAX1177. This circuit limits the current going into AIN to
less than 2mA.
Track and Hold (T/H)In track mode, the internal hold capacitor acquires the
analog signal (Figure 4). In hold mode, the T/H switches
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 CHOLDrepresents a sam-
ple of the input. In hold mode, the capacitive 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.
MAX1177
16-Bit, 135ksps, Single-Supply ADC
with 0 to 10V Input Range
