19-3294; Rev 1; 8/04
EVAALVUAAILTAIOBNLEKIT
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
General Description
The MAX1040–MAX1043/MAX1046–MAX1049 integrate a
multichannel, 10-bit, analog-to-digital converter (ADC)
and a quad, 10-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 (MAX1041/MAX1043/MAX1047/
MAX1049) and from +4.75V to +5.25V (MAX1040/
MAX1042/MAX1046/MAX1048). These devices consume
2.5mA at 300ksps throughput, only 22µA at 1ksps
throughput, and under 0.2µA in the shutdown mode. The
MAX1042/MAX1043/MAX1048/MAX1049 offer four GPIOs
that can be configured as inputs or outputs.
The MAX1040–MAX1043/MAX1046–MAX1049 are avail-
able in 36-pin thin QFN packages. All devices are speci-
fied over the -40°C to +85°C temperature range.
Features
♦ 10-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, No Missing Codes Over Temperature
♦ 10-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 Sensor
♦ On-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 Interface
♦ AutoShutdown Between Conversions
♦ Low-Power ADC
2.5mA at 300ksps
22µA at 1ksps
0.2µA at Shutdown
♦ Low-Power DAC: 1.5µA
♦ Evaluation Kit Available (Order MAX1258EVKIT)
Applications
Closed-Loop Controls for Optical Components
and Base Stations
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.
System Supervision and Control
Data-Acquisition Systems
Ordering Information/Selector Guide
PART
TEMP RANGE
PIN-PACKAGE
REF
VOLTAGE
(V)
ANALOG
SUPPLY
VOLTAGE (V)
RESOLUTION
BITS***
ADC
CHANNELS
DAC
CHANNELS
GPIOs
MAX1040BETX -40°C to +85°C 36 Thin QFN-EP** 4.096 4.75 to 5.25
10
8 40
MAX1041BETX* -40°C to +85°C 36 Thin QFN-EP** 2.5
2.7 to 3.6
10
8 40
MAX1042BETX -40°C to +85°C 36 Thin QFN-EP** 4.096 4.75 to 5.25
10
8 44
MAX1043BETX* -40°C to +85°C 36 Thin QFN-EP**
*Future product—contact factory for availability.
**EP = Exposed pad.
***Number of resolution bits refers to both DAC and ADC.
2.5
2.7 to 3.6
10
8 44
Ordering Information/Selector Guide continued on last page.
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
Free Datasheet http://www.datasheet4u.com/
