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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1022

Multichannel ADCs/DACs


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MAX1022 pdf
19-3280; Rev 5; 2/12
EVAALVUAAILTAIOBNLEKIT
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
General Description
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 (4nVs) and low digital feedthrough (0.5nVs) 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.
Applications
Controls for Optical Components
Base-Station Control Loops
System Supervision and Control
Data-Acquisition Systems
Features
o 10-Bit, 225ksps ADC
Analog Multiplexer with True-Differential
Track/Hold (T/H)
16 Single-Ended Channels or 8 Differential
Channels (Unipolar or Bipolar)
(MAX1057/MAX1058)
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 (4nVs)
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±1 LSB INL
o Internal Reference or External Single-Ended/
Differential Reference
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
Data-Averaging Features
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
Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information/Selector Guide
PART
REF
ANALOG
TEMP RANGE
PIN-PACKAGE
VOLTAGE
(V)
SUPPLY
VOLTAGE (V)
RESOLUTION
BITS**
ADC
DAC
CHANNELS CHANNELS
GPIOs
MAX1020BETX -40°C to +85°C 36 TQFN-EP*
4.096
4.75 to 5.25
10
8 84
MAX1022BETX -40°C to +85°C 36 TQFN-EP*
4.096
4.75 to 5.25
10
12 8 0
MAX1057BETM -40°C to +85°C 48 TQFN-EP*
2.5
2.7 to 3.6
10
16 8 12
MAX1058BETM -40°C to +85°C 48 TQFN-EP*
4.096
4.75 to 5.25
10
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.



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MAX1022 pdf
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND ........................................................-0.3V to +6V
DGND to AGND.....................................................-0.3V to +0.3V
DVDD to AVDD......................................................-3.0V to +0.3V
Digital Inputs to DGND.............................................-0.3V to +6V
Digital Outputs to DGND ........................-0.3V to (VDVDD + 0.3V)
Analog Inputs, Analog Outputs and REF_
to AGND .............................................-0.3V to (VAVDD + 0.3V)
Maximum Current into Any Pin (except AGND, DGND, AVDD,
DVDD, and OUT_)...........................................................50mA
Maximum Current into OUT_.............................................100mA
Continuous Power Dissipation (multilayer board, TA = +70°C)
36-Pin TQFN (6mm x 6mm)
(derate 35.7mW/°C above +70°C) ......................2857.1mW
48-Pin TQFN (7mm x 7mm)
(derate 40mW/°C above +70°C) ............................3200mW
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
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.
ELECTRICAL CHARACTERISTICS
(VAVDD = VDVDD = 2.7V to 3.6V (MAX1057), external reference VREF = 2.5V (MAX1057), VAVDD = VDVDD = 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference VREF = 4.096V (MAX1020/MAX1022/MAX1058), fCLK = 3.6MHz (50% duty cycle),
TA = -40°C to +85°C, unless otherwise noted. Typical values are at VAVDD = VDVDD = 3V (MAX1057), VAVDD = VDVDD = 5V
(MAX1020/MAX1022/MAX1058), TA = +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ADC
DC ACCURACY (Note 1)
Resolution
10 Bits
Integral Nonlinearity
INL
±0.5
±1.0
LSB
Differential Nonlinearity
DNL
±0.5
±1.0
LSB
Offset Error
±0.25 ±2.0
LSB
Gain Error
(Note 2)
±0.025 ±2.0
LSB
Gain Temperature Coefficient
±1.4
ppm/°C
Channel-to-Channel Offset
±0.1
LSB
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, VIN = 2.5VP-P (MAX1057), VIN = 4.096VP-P (MAX1020/MAX1022/MAX1058),
225ksps, fSCLK = 3.6MHz)
Signal-to-Noise Plus Distortion
SINAD
61 dB
Total Harmonic Distortion
(Up to the Fifth Harmonic)
THD
-70 dBc
Spurious-Free Dynamic Range
SFDR
66 dBc
Intermodulation Distortion
Full-Linear Bandwidth
IMD fIN1 = 9.9kHz, fIN2 = 10.2kHz
SINAD > 70dB
72 dBc
100 kHz
Full-Power Bandwidth
-3dB point
1 MHz
CONVERSION RATE (Note 3)
External reference
0.8 µs
Power-Up Time
tPU
Internal reference (Note 4)
Conversion
218 Clock
Cycles
2 _______________________________________________________________________________________



Part Number MAX1022
Description Multichannel ADCs/DACs
Maker Maxim Integrated - Maxim Integrated
Total Page 30 Pages
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