19-3280; Rev 5; 2/12
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
The MAX1020/MAX1022/MAX1057/MAX1058 integrate a
multichannel, 10-bit, analog-to-digital converter (ADC)
and an octal, 10-bit, digital-to-analog converter (DAC) in a
single IC. These devices also include a temperature sen-
sor and configurable general-purpose I/O ports (GPIOs)
with a 25MHz SPI-/QSPI™-/MICROWIRE®-compatible
serial interface. The ADC is available in 8/12/16 input-
channel versions. The octal DAC outputs settle within
2.0µs, and the ADC has a 225ksps 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 the DAC allow the use of an internal refer-
ence, 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 con-
sumption and processor requirements. The low glitch
energy (4nV•s) and low digital feedthrough (0.5nV•s) of
the integrated octal 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 (MAX1057) and from +4.75V to
+5.25V (MAX1020/MAX1022/MAX1058). The devices
consume 2.5mA at 225ksps throughput, only 22µA at
1ksps throughput, and under 0.2µA in the shutdown
mode. The MAX1057/MAX1058 feature 12 GPIOs, while
the MAX1020 offers four GPIOs that can be configured as
inputs or outputs.
The MAX1057/MAX1058 are available in 48-pin thin QFN
packages. The MAX1020/MAX1022 are available in 36-
pin thin QFN packages. All devices are specified over the
-40°C to +85°C temperature range.
Controls for Optical Components
Base-Station Control Loops
System Supervision and Control
o 10-Bit, 225ksps ADC
Analog Multiplexer with True-Differential
16 Single-Ended Channels or 8 Differential
Channels (Unipolar or Bipolar)
12 Single-Ended Channels or 6 Differential
Channels (Unipolar or Bipolar) (MAX1022)
8 Single-Ended Channels or 4 Differential
Channels (Unipolar or Bipolar) (MAX1020)
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
o 10-Bit, Octal, 2µs Settling DAC
Ultra-Low Glitch Energy (4nV•s)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±1 LSB INL
o Internal Reference or External Single-Ended/
Internal Reference Voltage 2.5V or 4.096V
o Internal ±1°C Accurate Temperature Sensor
o On-Chip FIFO Capable of Storing 16 ADC
Conversion Results and One Temperature Result
o On-Chip Channel-Scan Mode and Internal
o Analog Single-Supply Operation
+2.7V to +3.6V or +4.75V to +5.25V
o Digital Supply: 2.7V to VAVDD
o 25MHz, SPI/QSPI/MICROWIRE Serial Interface
o AutoShutdown Between Conversions
o Low-Power ADC
2.5mA at 225ksps
22µA at 1ksps
0.2µA at Shutdown
o Low-Power DAC: 1.5mA
o Evaluation Kit Available (Order MAX1258EVKIT)
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information/Selector Guide
MAX1020BETX -40°C to +85°C 36 TQFN-EP*
4.75 to 5.25
MAX1022BETX -40°C to +85°C 36 TQFN-EP*
4.75 to 5.25
12 8 0
MAX1057BETM -40°C to +85°C 48 TQFN-EP*
2.7 to 3.6
16 8 12
MAX1058BETM -40°C to +85°C 48 TQFN-EP*
4.75 to 5.25
16 8 12
*EP = Exposed pad.
**Number of resolution bits refers to both DAC and ADC.
Pin Configurations appear at end of data sheet.
________________________________________________________________ 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.