MAX1415EWE ,16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCsApplications*Future product—contact factory for availability.Ordering Information continued at end ..
MAX1415EWE+ ,16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCsApplications• > 98dB 50Hz/60Hz Rejection● Industrial Instruments● Weigh Scales● Increase System Acc ..
MAX1416EUE ,5 V, 2-channel, 16-bit, low-power, sigma-delta ADCapplications.Serial InterfaceSelf-calibration and system calibration allow the♦ Pin Compatible with ..
MAX1416EUE ,5 V, 2-channel, 16-bit, low-power, sigma-delta ADCApplications*Future product—contact factory for availability.Ordering Information continued at end ..
MAX1416EUE+ ,16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCsFeaturesThe MAX1415/MAX1416 low-power, 2-channel, serial-● Improve Measurement Quality with Excelle ..
MAX1422ECM ,12-Bit, 20Msps, 3.3V, Low-Power ADC with Internal ReferenceELECTRICAL CHARACTERISTICS(V = V = 3.3V, AGND = DGND = 0, V = ±1.024V, differential input voltage a ..
MAX4040ESA ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op AmpsApplicationsMAX4041ESA -40°C to +85°C 8 SO —Battery-Powered Strain GaugesMAX4041EUA -40°C to +85°C ..
MAX4040ESA+ ,Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op AmpsApplicationsMAX4041ESA -40°C to +85°C 8 SO —Battery-Powered Strain GaugesMAX4041EUA -40°C to +85°C ..
MAX4040EUA ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op AmpsELECTRICAL CHARACTERISTICS—T = +25°CA(V = +5.0V, V = 0, V = 0, V = V / 2, SHDN = V , R = 100kΩ tied ..
MAX4040EUK ,Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op Ampsapplications.Ordering InformationThe MAX4040 is offered in a space-saving 5-pin SOT23PIN- SOT packa ..
MAX4040EUK+ ,Single/Dual/Quad, Low-Cost, SOT23, Micropower Rail-to-Rail I/O Op AmpsELECTRICAL CHARACTERISTICS—T = +25°C (continued)A(V = +5.0V, V = 0V, V = 0V, V = V / 2, SHDN = V , ..
MAX4040EUK-T ,Single/Dual/Quad / Low-Cost / SOT23 / Micropower Rail-to-Rail I/O Op Ampsapplications.Ordering InformationThe MAX4040 is offered in a space-saving 5-pin SOT23PIN- SOT packa ..
MAX1415EWE
16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs
General DescriptionThe MAX1415/MAX1416 low-power, 2-channel, serial-
output analog-to-digital converters (ADCs) use a sigma-
delta modulator with a digital filter to achieve 16-bit
resolution with no missing codes. These ADCs are pin-
compatible upgrades to the MX7705/AD7705. The
MAX1415/MAX1416 feature an internal oscillator (1MHz
or 2.4576MHz), an on-chip input buffer, and a program-
mable gain amplifier (PGA). The devices offer an SPI™-/
QSPI™-/MICROWIRE™-compatible serial interface.
The MAX1415 requires a single 2.7V to 3.6V supply, and
the MAX1416 requires a single 4.75V to 5.25V supply.
The operating supply current is 400µA (max) with a 3V
supply. Power-down mode reduces the supply current to
2µA (typ). When operating with a supply of 3V, the power
dissipation is less than 1.44mW, making the MAX1415
ideal for battery-powered applications.
Self-calibration and system calibration allow the
MAX1415/MAX1416 to correct for gain and offset errors.
Excellent DC performance (±0.0015% FSR INL) and low
noise (700nV in unbuffered mode) make the MAX1415/
MAX1416 ideal for measuring low-frequency signals with
a wide dynamic range. These devices accept fully differ-
ential bipolar/unipolar inputs. An internal input buffer
allows for input signals with high source impedances. An
on-chip digital filter, with a programmable cutoff and out-
put data rate, processes the output of the sigma-delta
modulator. The first notch frequency of the digital filter is
chosen to provide 150dB rejection of common-mode
50Hz or 60Hz noise and 98dB rejection of normal-mode
50Hz or 60Hz noise. A PGA and digital filtering allow sig-
nals to be directly acquired with little or no signal-condi-
tioning requirements.
The MAX1415/MAX1416 are available in 16-pin PDIP,
SO, and TSSOP packages.
ApplicationsIndustrial Instruments
Weigh Scales
Strain-Gauge Measurements
Loop-Powered Systems
Flow and Gas Meters
Medical Instrumentation
Pressure Transducers
Thermocouple Measurements
RTD Measurements
Features16-Bit Sigma-Delta ADCsTwo Fully Differential Input Channels0.0015% Integral Nonlinearity with No Missing
CodesInternal Analog Input BuffersProgrammable Gain Amplifier (PGA) from 1 to 128Internal Oscillator (2.4576MHz or 1MHz)Single 2.7V to 3.6V (MAX1415) or 4.75V to 5.25V
(MAX1416) SupplyLow Power
1mW max, 3V Supply
2µA (typ) Power-Down CurrentSPI™-/QSPI™-/MICROWIRE™-Compatible 3-Wire
Serial InterfacePin Compatible with MX7705/AD770516-Pin PDIP, SO, and TSSOP Packages
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Pin Configuration
Ordering Information19-3163; Rev 0; 1/04
SPI/QSPI are trademarks of Motorola, Inc.
*Future product—contact factory for availability.
Ordering Information continued at end of data sheet.
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX1415(VDD= 3V, GND = 0, VREF+= 1.225V, VREF-= GND, external fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to
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.
VDDto GND..............................................................-0.3V to +6V
All Other Pins to GND.................................-0.3V to (VDD+ 0.3V)
Maximum Current Input into Any Pin..................................50mA
Continuous Power Dissipation (TA= +70°C)
16-Pin PDIP (derate 10.5mW/°C above +70°C)...........842mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C).........755mW
16-Pin Wide SO (derate 9.5mW/°C above +70°C)......762mW
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
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1415 (continued)(VDD= 3V, GND = 0, VREF+= 1.225V, VREF-= GND, external fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1415 (continued)(VDD= 3V, GND = 0, VREF+= 1.225V, VREF-= GND, external fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1415 (continued)(VDD= 3V, GND = 0, VREF+= 1.225V, VREF-= GND, external fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to
GND = 0.1µF, TA= TMINto TMAX, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—MAX1416(VDD= 5V, GND = 0, VREF+= 2.5V, VREF-= GND, fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to GND =
0.1µF, TA= TMINto TMAX, unless otherwise noted.)
TIMING CHARACTERISTICS—MAX1415(Note 16) (Figures 8, 9)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1416 (continued)(VDD= 5V, GND = 0, VREF+= 2.5V, VREF-= GND, fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to GND =
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1416 (continued)(VDD= 5V, GND = 0, VREF+= 2.5V, VREF-= GND, fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to GND =
0.1µF, TA= TMINto TMAX, unless otherwise noted.)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
ELECTRICAL CHARACTERISTICS—MAX1416 (continued)(VDD= 5V, GND = 0, VREF+= 2.5V, VREF-= GND, fCLKIN= 2.4576MHz, CLKDIV bit = 0, CREF+to GND = 0.1µF, CREF-to GND =
0.1µF, TA= TMINto TMAX, unless otherwise noted.)
TIMING CHARACTERISTICS—MAX1416(Note 16) (Figures 8, 9)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Note 1:These errors are in the order of the conversion noise shown in Tables 1 and 3. This applies after calibration at the given
temperature.
Note 2:Recalibration at any temperature removes these drift errors.
Note 3:Positive full-scale error includes zero-scale errors (unipolar offset error or bipolar zero error) and applies to both unipolar
and bipolar input ranges.
Note 4:Full-scale drift includes zero-scale drift (unipolar offset drift or bipolar zero drift) and applies to both unipolar and bipolar
input ranges.
Note 5:Gain error does not include zero-scale errors. It is calculated as (full-scale error – unipolar offset error) for unipolar ranges,
and (full-scale error – bipolar zero error) for bipolar ranges.
Note 6:Gain-error drift does not include unipolar offset drift or bipolar zero drift. Effectively, it is the drift of the part if only zero-
scale calibrations are performed.
Note 7:The analog input voltage range on AIN+ is given here with respect to the voltage on AIN- on the MAX1415/MAX1416.
Note 8:This common-mode voltage range is allowed, provided that the input voltage on the analog inputs does not go more posi-
tive than (VDD+ 30mV) or more negative than (GND - 30mV). Parts are functional with voltages down to (GND - 200mV),
but with increased leakage at high temperature.
Note 9: The REF differential voltage, VREF, is the voltage on REF+ referenced to REF- (VREF= VREF+- VREF-).
Note 10:Guaranteed by design.
Note 11:These calibration and span limits apply, provided that the absolute voltage on the analog inputs does not exceed (VDD+
30mV) or go more negative than (GND - 30mV). The offset-calibration limit applies to both the unipolar zero point and the
bipolar zero point.
Note 12:When using a crystal or ceramic resonator across the CLKIN and CLKOUT as the clock source for the device, the supply
current and power dissipation varies depending on the crystal or resonator type. Supply current is measured with the digi-
tal inputs connected to 0 or VDD, CLKIN connected to an external clock source, and CLKDIS = 1.
Note 13:If the external master clock continues to run in power-down mode, the power-down current typically increases to 67µA at
3V. When using a crystal or ceramic resonator across the CLKIN and CLKOUT as the clock source for the device, the
clock generator continues to run in power-down mode and the power dissipation depends on the crystal or resonator type
(see the Power-Down Modessection).
Note 14:Measured at DC and applied in the selected passband. PSRR at 50Hz exceeds 120dB with filter notches of 25Hz or 50Hz.
PSRR at 60Hz exceeds 120dB with filter notches of 20Hz or 60Hz.
Note 15:Provide fCLKINwhenever the MAX1415/MAX1416 are not in power-down mode. If no clock is present, the device can draw
higher-than-specified current and can possibly become uncalibrated.
Note 16:All input signals are specified with tr= tf= 5ns (10% to 90% of VDD) and timed from a voltage level of 1.6V.
TIMING CHARACTERISTICS—MAX1416 (continued)(Note 16) (Figures 8, 9)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Table 4. MAX1416—Peak-to-Peak Resolution vs. Gain and Output Data Rate (5V)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Typical Operating Characteristics(MAX1415: VDD= 5V, VREF+= 2.5V, VREF-= GND, TA= +25°C, unless otherwise noted.) (MAX1416: VDD= 3V, VREF+= 1.225V,
VREF-= GND, TA= +25°C, unless otherwise noted.)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Typical Operating Characteristics (continued)(MAX1415: VDD= 5V, VREF+= 2.5V, VREF-= GND, TA= +25°C, unless otherwise noted.) (MAX1416: VDD= 3V, VREF+= 1.225V,
VREF-= GND, TA= +25°C, unless otherwise noted.)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Typical Operating Characteristics (continued)(MAX1415: VDD= 5V, VREF+= 2.5V, VREF-= GND, TA= +25°C, unless otherwise noted.) (MAX1416: VDD= 3V, VREF+= 1.225V,
VREF-= GND, TA= +25°C, unless otherwise noted.)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Typical Operating Characteristics (continued)(MAX1415: VDD= 5V, VREF+= 2.5V, VREF-= GND, TA= +25°C, unless otherwise noted.) (MAX1416: VDD= 3V, VREF+= 1.225V,
VREF-= GND, TA= +25°C, unless otherwise noted.)
MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
Pin Description
