MAX1174BCUP ,14-Bit / 135ksps / Single-Supply ADCs with Bipolar Analog Input RangeApplications Typical Operating CircuitTemperature Sensing and Monitoring+5V ANALOG +5V DIGITALIndus ..
MAX1174BCUP+ ,14-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input RangeFeaturesThe MAX1156/MAX1158/MAX1174 14-bit, low-power,♦ Byte-Wide Parallel Interfacesuccessive-appr ..
MAX1174BCUP+ ,14-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Rangeapplications.MAX1156ACUP 0°C to +70°C 20 TSSOP 0 to +10VThe MAX1156/MAX1158/MAX1174 are available i ..
MAX1177ACUP ,16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input RangeApplicationsTypical Operating CircuitTemperature Sensing and MonitoringIndustrial Process Control+5 ..
MAX1177ACUP+ ,16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input RangeApplicationsTypical Operating CircuitTemperature Sensing and MonitoringIndustrial Process Control+5 ..
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 ..
MAX3488CSA+ ,3.3V Powered, 10Mbps and Slew-Rate Limited, True RS-485/RS-422 Transceivers
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MAX3488EESA+ ,3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX1174BCUP
14-Bit / 135ksps / Single-Supply ADCs with Bipolar Analog Input Range
General DescriptionThe MAX1156/MAX1158/MAX1174 14-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, a factory-
trimmed internal clock, and a byte-wide parallel inter-
face. The devices operate from a single +4.75V to
+5.25V analog supply and feature a separate digital
supply input for direct interface with +2.7V to +5.25V
digital logic.
The MAX1156 accepts a 0 to +10V analog input volt-
age range. The MAX1158 accepts a ±10V bipolar ana-
log input voltage range, while the MAX1174 accepts a
±5V bipolar analog input voltage range. 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 (typ)
at 10ksps.
The MAX1156/MAX1158/MAX1174 are ideal for high-
performance, battery-powered, data-acquisition appli-
cations. Excellent AC performance (THD = -100dB) and
DC accuracy (±1LSB INL) make the MAX1156/
MAX1158/MAX1174 ideal for industrial process control,
instrumentation, and medical applications.
The MAX1156/MAX1158/MAX1174 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, ±5V, 0 to 10VSingle +4.75V to +5.25V Analog Supply VoltageInterface with +2.7V to +5.25V Digital Logic±1LSB INL (max)±1LSB DNL (max)Low Supply Current (max)
2.9mA (External Reference)
3.8mA (Internal Reference)
5µA AutoShutdown ModeSmall Footprint20-Pin TSSOP Package
MAX1156/MAX1158/MAX1174
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Rangeypical Operating Circuit19-2736; Rev 0; 1/03
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information
Pin Configuration appears at end of data sheet.
Ordering Information continued at end of data sheet.
MAX1156/MAX1158/MAX1174
14-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)
20-Pin TSSOP (derate 10.9mW/°C above +70°C).......879mW
Operating Temperature Range
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,
MAX1156/MAX1158/MAX1174
14-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.)
MAX1156/MAX1158/MAX1174
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
TIMING CHARACTERISTICS (Figures 1 and 2)(AVDD= +4.75V to +5.25V ±5%, 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,
unless otherwise noted. Typical values are at TA= +25°C.)
Note 2:To ensure best performance, finish reading the data and wait tBRbefore starting a new acquisition.
MAX1156/MAX1158/MAX1174
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
INL vs. CODEMAX1156/58/74 toc01
INL (LSB)400060008000200010000120001400016000
CODE
DNL vs. CODEMAX1156/58/74 toc02
DNL (LSB)400060008000200010000120001400016000
CODE
SUPPLY CURRENT (AVDD + DVDD)
vs. TEMPERATURE
MAX1156/58/74 toc03
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
SUPPLY CURRENT (AVDD + DVDD)
vs. SAMPLE RATEMAX1156/58/74 toc04
SAMPLE RATE (ksps)
SUPPLY CURRENT (mA)
SHUTDOWN CURRENT (AVDD + DVDD)
vs. TEMPERATURE
MAX1156/58/74 toc05
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (
OFFSET ERROR vs. TEMPERATURE
MAX1156/58/74 toc06
TEMPERATURE (°C)
OFFSET ERROR (mV)
GAIN ERROR vs. TEMPERATURE
MAX1156/58/74 toc07
TEMPERATURE (°C)
GAIN ERROR (%FSR)
INTERNAL REFERENCE
vs. TEMPERATURE
MAX1156/58/74 toc08
TEMPERATURE (°C)
INTERNAL REFERENCE (V)
FFT AT 1kHz
MAX1156/58/74 toc09
FREQUENCY (kHz)
MAGNITUDE (dB)
Typical Operating Characteristics(AVDD= DVDD= +5V, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD, CLOAD= 20pF, TA= TMINto
TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Typical Application Circuit)
MAX1156/MAX1158/MAX1174
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Rangeypical Operating Characteristics (continued)(AVDD= DVDD= +5V, external reference = +4.096V, CREF= 10µF, CREFADJ= 0.1µF, VREFADJ= AVDD, CLOAD= 20pF, TA= TMINto
TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Typical Application Circuit)
Pin Description
Detailed Description
Converter OperationThe MAX1156/MAX1158/MAX1174 use a successive-
approximation (SAR) conversion technique with an
inherent track-and-hold (T/H) stage to convert an ana-
log input into a 14-bit digital output. Parallel outputs
provide a high-speed interface to microprocessors
(µPs). The Functional Diagramshows a simplified inter-
nal architecture of the MAX1156/MAX1158/MAX1174.
Figure 3 shows a typical application circuit for the
MAX1156/MAX1158/MAX1174.
Analog Input
Input ScalerThe MAX1156/MAX1158/MAX1174 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 sup-
ply. The input scaler attenuates and shifts the analog
input to match the input range of the internal DAC. The
MAX1156 has a unipolar input voltage range of 0 to
+10V. The MAX1158 input voltage range is ±10V while
the MAX1174 input voltage range is ±5V. Figure 4
shows the equivalent input circuit of the MAX1156/
MAX1158/MAX1174. 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 (see 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 CHOLDrep-
resents a sample of the input. In hold mode, the capac-
itive DAC adjusts during the remainder of the
conversion time to restore node T/H OUT to zero within
the limits of 14-bit resolution. Force CSlow to put valid
data on the bus after conversion is complete.
MAX1156/MAX1158/MAX1174
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
Pin Description (continued)
MAX1156/MAX1158/MAX1174
Power-Down ModesSelect standby mode or shutdown mode with the R/C
bit during the second falling edge of CS(see the
Selecting Standby or Shutdown Modesection). The
MAX1156/MAX1158/MAX1174 automatically enter
either standby mode (reference and buffer on) or shut-
down (reference and buffer off) after each conversion,
depending on the status of R/Cduring the second
falling edge of CS.
Internal ClockThe MAX1156/MAX1158/MAX1174 generate an internal
conversion clock to free the microprocessor from the
burden of running the SAR conversion clock. Total con-
version time (tCONV) after entering hold mode (second
falling edge of CS) to end of conversion (EOC) falling is
4.7µs (max).
Applications Information
Starting a ConversionCSand R/Ccontrol acquisition and conversion in the
MAX1156/MAX1158/MAX1174 (see Figure 2). The first
falling edge of CSpowers up the device and puts it in
acquire mode if R/Cis low. The convert start is ignored
if R/Cis high. The MAX1156/MAX1158/MAX1174 need
at least 12ms (CREFADJ= 0.1µF, CREF= 10µF) for the
internal reference to wake up and settle before starting
the conversion, if powering up from shutdown.
14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input RangeFigure 2. MAX1156/MAX1158/MAX1174 Timing Diagram
