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MAX1340BETXMAXIMN/a20avai4.096 V, 12-bit, multichannel ADC/DAC with FIFO, temperature sensing, and GPIO port
MAX1342BETXMAXIMN/a12avai4.096 V, 12-bit, multichannel ADC/DAC with FIFO, temperature sensing, and GPIO port


MAX1340BETX ,4.096 V, 12-bit, multichannel ADC/DAC with FIFO, temperature sensing, and GPIO portApplicationsSPI and QSPI are trademarks of Motorola, Inc.Closed-Loop Controls for Optical Component ..
MAX1340BETX+ ,12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO PortsApplications♦ Low-Power DAC: 1.5mAClosed-Loop Controls for Optical Components♦ Evaluation Kit Avail ..
MAX1340BETX+ ,12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO PortsFeatures♦ Internal Reference or External Single-Ended/such as an internal ±1°C accurate temperature ..
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MAX1342BETX ,4.096 V, 12-bit, multichannel ADC/DAC with FIFO, temperature sensing, and GPIO portELECTRICAL CHARACTERISTICS(AV = DV = 2.7V to 3.6V (MAX1341/MAX1343/MAX1347/MAX1349), external refer ..
MAX1342BETX+ ,12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO PortsELECTRICAL CHARACTERISTICS(AV = DV = 4.75V to 5.25V, external reference V = 4.096V, f = 3.6MHz (50% ..
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MAX1340BETX-MAX1342BETX
4.096 V, 12-bit, multichannel ADC/DAC with FIFO, temperature sensing, and GPIO port
General Description
The MAX1340–MAX1343/MAX1346–MAX1349 integrate a
multichannel, 12-bit, analog-to-digital converter (ADC)
and a quad, 12-bit, digital-to-analog converter (DAC) in a
single IC. The devices also include a temperature sensor
and configurable general purpose I/O ports (GPIOs) with
a 25MHz SPI™-/QSPI™-/MICROWIRE™-compatible seri-
al interface. The ADC is available in a 4 or an 8 input-
channel version. The four DAC outputs settle within 2.0µs,
and the ADC has a 300ksps conversion rate.
All devices include an internal reference (2.5V or 4.096V)
providing a well-regulated, low-noise reference for both
the ADC and DAC. Programmable reference modes for
the ADC and DAC allow the use of an internal reference,
an external reference, or a combination of both. Features
such as an internal ±1°C accurate temperature sensor,
FIFO, scan modes, programmable internal or external
clock modes, data averaging, and AutoShutdown™ allow
users to minimize both power consumption and proces-
sor requirements. The low glitch energy (4nV•s) and low
digital feedthrough (0.5nV•s) of the integrated quad
DACs make these devices ideal for digital control of fast-
response closed-loop systems.
The devices are guaranteed to operate with a supply volt-
age from +2.7V to +3.6V (MAX1341/MAX1343/MAX1347/
MAX1349) and from +4.5V to +5.5V (MAX1340/MAX1342/
MAX1346/MAX1348). The devices consume 2.5mA at
300ksps throughput, only 22µA at 1ksps throughput, and
under 0.2µA in the shutdown mode. The MAX1342/
MAX1343/MAX1348/MAX1349 offer four GPIOs that can
be configured as inputs or outputs.
The MAX1340–MAX1343/MAX1346–MAX1349 are avail-
able in 36-pin thin QFN packages. All devices are speci-
fied over the -40°C to +85°C temperature range.
Applications

Closed-Loop Controls for Optical Components
and Base Stations
System Supervision and Control
Data-Acquisition Systems
Features
12-Bit, 300ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
8 Single-Ended Channels or 4 Differential
Channels (Unipolar or Bipolar)
4 Single-Ended Channels or 2 Differential
Channels (Unipolar or Bipolar)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
12-Bit, Quad, 2µs Settling DAC
Ultra-Low Glitch Energy (4nV•s)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±0.5 LSB INL
Internal Reference or External Single-Ended/
Differential Reference
Internal Reference Voltage 2.5V or 4.096V
Internal ±1°C Accurate Temperature SensorOn-Chip FIFO Capable of Storing 16 ADC
Conversion Results and One Temperature Result
On-Chip Channel-Scan Mode and Internal
Data-Averaging Features
Analog Single-Supply Operation
+2.7V to +3.6V or +4.75V to +5.25V
25MHz, SPI/QSPI/MICROWIRE Serial InterfaceAutoShutdown Between ConversionsLow-Power ADC
2.5mA at 300ksps
22µA at 1ksps
0.2µA at Shutdown
Low-Power DAC: 1.5µAEvaluation Kit Available (Order MAX1258EVKIT)
MAX1340–MAX1343/MAX1346–MAX1349
12-Bit, Multichannel ADCs/DACs with FIFO,emperature Sensing, and GPIO Ports
Ordering Information/Selector Guide

19-3332; Rev 1; 8/04
Pin Configurations appear at end of data sheet.

SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
*Future product—contact factory for availability.
**EP = Exposed pad.
***Number of resolution bits refers to both DAC and ADC.
Ordering Information/Selector Guide continued at end of
data sheet.
MAX1340–MAX1343/MAX1346–MAX1349
12-Bit, Multichannel ADCs/DACs with FIFO,emperature Sensing, and GPIO Ports
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(AVDD= DVDD= 2.7V to 3.6V (MAX1341/MAX1343/MAX1347/MAX1349), external reference VREF= 2.5V (MAX1341/MAX1343/
MAX1347/MAX1349), AVDD= DVDD= 4.75V to 5.25V (MAX1340/MAX1342/MAX1346/MAX1348), external reference VREF= 4.096V
(MAX1340/MAX1342/MAX1346/MAX1348), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical
values are at AVDD= DVDD= 3V (MAX1341/MAX1343/MAX1347/MAX1349), AVDD= DVDD= 5V (MAX1340/MAX1342/
MAX1346/MAX1348), TA= +25°C. Outputs are unloaded, unless otherwise noted.)
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.
AVDDto AGND.........................................................-0.3V to +6V
DGND to AGND.....................................................-0.3V to +0.3V
DVDDto AVDD.......................................................-3.0V to +0.3V
Digital Inputs to DGND.............................................-0.3V to +6V
Digital Outputs to DGND.........................-0.3V to (DVDD + 0.3V)
Analog Inputs, Analog Outputs and REF_
to AGND...............................................-0.3V to (AVDD + 0.3V)
Maximum Current into Any Pin (except AGND, DGND, AVDD,
DVDD, and OUT_)...........................................................50mA
Maximum Current into OUT_.............................................100mA
Continuous Power Dissipation (TA= +70°C)
36-Pin Thin QFN (6mm x 6mm)
(derate 26.3mW/°C above +70°C)......................2105.3mW
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
Note:
If the package power dissipation is not exceeded, one output at a time may be shorted to AVDD, DVDD, AGND, or DGND
indefinitely.
MAX1340–MAX1343/MAX1346–MAX1349
12-Bit, Multichannel ADCs/DACs with FIFO,emperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= 2.7V to 3.6V (MAX1341/MAX1343/MAX1347/MAX1349), external reference VREF= 2.5V (MAX1341/MAX1343/
MAX1347/MAX1349), AVDD= DVDD= 4.75V to 5.25V (MAX1340/MAX1342/MAX1346/MAX1348), external reference VREF= 4.096V
(MAX1340/MAX1342/MAX1346/MAX1348), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical
values are at AVDD= DVDD= 3V (MAX1341/MAX1343/MAX1347/MAX1349), AVDD= DVDD= 5V (MAX1340/MAX1342/
MAX1340–MAX1343/MAX1346–MAX1349
12-Bit, Multichannel ADCs/DACs with FIFO,emperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= 2.7V to 3.6V (MAX1341/MAX1343/MAX1347/MAX1349), external reference VREF= 2.5V (MAX1341/MAX1343/
MAX1347/MAX1349), AVDD= DVDD= 4.75V to 5.25V (MAX1340/MAX1342/MAX1346/MAX1348), external reference VREF= 4.096V
(MAX1340/MAX1342/MAX1346/MAX1348), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical
values are at AVDD= DVDD= 3V (MAX1341/MAX1343/MAX1347/MAX1349), AVDD= DVDD= 5V (MAX1340/MAX1342/
MAX1340–MAX1343/MAX1346–MAX1349
12-Bit, Multichannel ADCs/DACs with FIFO,emperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= 2.7V to 3.6V (MAX1341/MAX1343/MAX1347/MAX1349), external reference VREF= 2.5V (MAX1341/MAX1343/
MAX1347/MAX1349), AVDD= DVDD= 4.75V to 5.25V (MAX1340/MAX1342/MAX1346/MAX1348), external reference VREF= 4.096V
(MAX1340/MAX1342/MAX1346/MAX1348), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical
values are at AVDD= DVDD= 3V (MAX1341/MAX1343/MAX1347/MAX1349), AVDD= DVDD= 5V (MAX1340/MAX1342/
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