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MAX1076

Description
1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference
File Size696KB,18 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1076 Overview

1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference

19-3291; Rev 1; 4/09
1.8Msps, Single-Supply, Low-Power, True-
Differential, 10-Bit ADCs with Internal Reference
General Description
The MAX1076/MAX1078 are low-power, high-speed, seri-
al-output, 10-bit, analog-to-digital converters (ADCs) that
operate at up to 1.8Msps and have an internal reference.
These devices feature true-differential inputs, offering bet-
ter noise immunity, distortion improvements, and a wider
dynamic range over single-ended inputs. A standard
SPI™/QSPI™/MICROWIRE™ interface provides the clock
necessary for conversion. These devices easily interface
with standard digital signal processor (DSP) synchronous
serial interfaces.
The MAX1076/MAX1078 operate from a single +4.75V to
+5.25V supply voltage. The MAX1076/MAX1078 include
a 4.096V internal reference. The MAX1076 has a unipolar
analog input, while the MAX1078 has a bipolar analog
input. These devices feature a partial power-down mode
and a full power-down mode for use between conver-
sions, which lower the supply current to 2mA (typ) and
1µA (max), respectively. Also featured is a separate
power-supply input (V
L
), which allows direct interfacing to
+1.8V to V
DD
digital logic. The fast conversion speed,
low-power dissipation, excellent AC performance, and DC
accuracy (±0.5 LSB INL) make the MAX1076/MAX1078
ideal for industrial process control, motor control, and
base-station applications.
The MAX1076/MAX1078 come in a 12-pin TQFN pack-
age, and are available in the extended (-40°C to +85°C)
temperature range.
1.8Msps Sampling Rate
Only 50mW (typ) Power Dissipation
Only 1µA (max) Shutdown Current
High-Speed, SPI-Compatible, 3-Wire Serial Interface
61dB S/(N + D) at 525kHz Input Frequency
Internal True-Differential Track/Hold (T/H)
Internal 4.096V Reference
No Pipeline Delays
Small 12-Pin TQFN Package
Features
MAX1076/MAX1078
Ordering Information
PART
MAX1076ETC+T
MAX1078ETC+T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
12 TQFN
12 TQFN
INPUT
Unipolar
Bipolar
Applications
Data Acquisition
Bill Validation
Motor Control
Communications
Portable Instruments
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configuration
TOP VIEW
AIN+
12
N.C.
11
SCLK
10
Typical Operating Circuit
+4.75V TO +5.25V
10μF
0.01μF
V
DD
DIFFERENTIAL +
INPUT
VOLTAGE -
AIN+
AIN-
+1.8V TO V
DD
0.01μF
V
L
DOUT
10μF
AIN-
REF
RGND
1
2
3
9
8
7
CNVST
DOUT
V
L
MAX1076
MAX1078
MAX1076
CNVST
MAX1078
REF
4.7μF
0.01μF
RGND
GND
μC/DSP
SCLK
4
V
DD
5
N.C.
6
GND
TQFN
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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MAX1076 MAX1076ETC+T MAX1078ETC+T MAX1078
Description 1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference 1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference 1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference 1.8Msps, Single-Supply, Low-Power, True- Differential, 10-Bit ADCs with Internal Reference
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