MAX1415 Maxim, MAX1415 Datasheet
MAX1415
Manufacturer Part Number
MAX1415
Description
16-Bit / Low-Power / 2-Channel / Sigma-Delta ADCs
Manufacturer
Maxim
Datasheet
1.MAX1415.pdf
(36 pages)
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The 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.
19-3163; Rev 0; 1/04
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Industrial Instruments
Weigh Scales
Strain-Gauge Measurements
Loop-Powered Systems
Flow and Gas Meters
Medical Instrumentation
Pressure Transducers
Thermocouple Measurements
RTD Measurements
________________________________________________________________ Maxim Integrated Products
General Description
Applications
16-Bit, Low-Power, 2-Channel,
*Future product—contact factory for availability.
Ordering Information continued at end of data sheet.
MAX1415ENE*
MAX1415EWE*
MAX1415EUE
MAX1415AENE*
MAX1415AEWE*
MAX1415AEUE*
MAX1415CNE*
MAX1415CWE*
MAX1415CUE*
16-Bit Sigma-Delta ADCs
Two Fully Differential Input Channels
0.0015% Integral Nonlinearity with No Missing
Codes
Internal Analog Input Buffers
Programmable Gain Amplifier (PGA) from 1 to 128
Internal Oscillator (2.4576MHz or 1MHz)
Single 2.7V to 3.6V (MAX1415) or 4.75V to 5.25V
(MAX1416) Supply
Low Power
SPI™-/QSPI™-/MICROWIRE™-Compatible 3-Wire
Serial Interface
Pin Compatible with MX7705/AD7705
16-Pin PDIP, SO, and TSSOP Packages
1mW max, 3V Supply
2µA (typ) Power-Down Current
PART
TOP VIEW
Sigma-Delta ADCs
CLKOUT
CLKIN
RESET
AIN2+
AIN1+
AIN1-
SCLK
-45°C to +85°C
-45°C to +85°C
-45°C to +85°C
-45°C to +85°C
-45°C to +85°C
-45°C to +85°C
TEMP RANGE
CS
0°C to +70°C
0°C to +70°C
0°C to +70°C
1
2
3
4
5
6
8
7
Ordering Information
PDIP/SO/TSSOP
MAX1415
MAX1416
Pin Configuration
PIN-
PACKAGE
16 PDIP
16 Wide SO
16 TSSOP
16 PDIP
16 Wide SO
16 TSSOP
16 PDIP
16 Wide SO
16 TSSOP
16
15
14
13
12
11
10
9
GND
V
DIN
DOUT
DRDY
AIN2-
REF-
REF+
DD
Features
V
DD
3
3
3
3
3
3
3
3
3
(V)
1
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