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PDF MAX1020 Data sheet ( Hoja de datos )

Número de pieza MAX1020
Descripción Multichannel ADCs/DACs
Fabricantes Maxim Integrated 
Logotipo Maxim Integrated Logotipo



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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.

1 page




MAX1020 pdf
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(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
Wake-Up Time (Note 12)
1kOutput Termination
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
From power-down mode, VAVDD = 5V
From power-down mode, VAVDD = 2.7V
Programmed in power-down mode
25
21
1
µs
k
100kOutput Termination
At wake-up or programmed in
power-down mode
100 k
DYNAMIC PERFORMANCE (Notes 5, 13)
Output-Voltage Slew Rate
SR Positive and negative
3
V/µs
Output-Voltage Settling Time
Digital Feedthrough
tS To 1 LSB, 400 - C00 hex (Note 7)
Code 0, all digital inputs from 0 to VDVDD
25
µs
0.5 nVs
Major Code Transition Glitch
Impulse
Between codes 2047 and 2048
4 nVs
Output Noise (0.1Hz to 50MHz)
Output Noise (0.1Hz to 500kHz)
From VREF
Using internal reference
From VREF
Using internal reference
660
720 µVP-P
260
320 µVP-P
DAC-to-DAC Transition
Crosstalk
0.5 nVs
INTERNAL REFERENCE
REF1 Output Voltage (Note 8)
MAX1057
MAX1020/MAX1022/MAX1058
REF1 Temperature Coefficient
TCREF
REF1 Short-Circuit Current
VREF = 2.5V
VREF = 4.096V
EXTERNAL-REFERENCE INPUT
REF1 Input Voltage Range
VREF1 REF modes 01, 10, and 11 (Note 4)
REF1 Input Impedance
RREF1
DIGITAL INTERFACE
DIGITAL INPUTS (SCLK, DIN, CS, CNVST, LDAC)
Input-Voltage High
Input-Voltage Low
Input Leakage Current
VIH VDVDD = 2.7V to 5.25V
VIL VDVDD = 3.6V to 5.25V
VDVDD = 2.7V to 3.6V
IL
Input Capacitance
CIN
DIGITAL OUTPUT (DOUT) (Note 14)
Output-Voltage Low
VOL ISINK = 2mA
2.482
4.066
2.50
4.096
±30
0.39
0.63
2.518
4.126
V
ppm/°C
mA
0.7
VAVDD
V
70 100 130
k
2.4
0.8
0.6
±0.01 ±10
15
0.4
V
V
µA
pF
V
_______________________________________________________________________________________ 5

5 Page





MAX1020 arduino
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Typical Operating Characteristics (continued)
(VAVDD = VDVDD = 3V (MAX1057), external VREF = 2.5V (MAX1057), VAVDD = VDVDD = 5V (MAX1020/MAX1022/MAX1058), external
VREF = 4.096V (MAX1020/MAX1022/MAX1058), fCLK = 3.6MHz (50% duty cycle), fSAMPLE = 225ksps, CLOAD = 50pF, 0.1µF capaci-
tor at REF, TA = +25°C, unless otherwise noted.)
DAC INTEGRAL NONLINEARITY
vs. OUTPUT CODE
0.3
DAC INTEGRAL NONLINEARITY
vs. OUTPUT CODE
0.3
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
0.2 0.2
0.05
0.1 0.1
00
0
-0.1
-0.2
MAX1020/MAX1022/MAX1058
-0.3
0 256 512
OUTPUT CODE
768
1024
DAC DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
0.10
-0.1
-0.2
MAX1057
-0.3
0 256
512
OUTPUT CODE
768
1024
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
0.25
-0.05
MAX1020/MAX1022/MAX1058
-0.10
1023 1026 1029 1032 1035 1038
OUTPUT CODE
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
0.5
0.05
0
-0.05
MAX1057
-0.10
1023 1026
1029 1032
OUTPUT CODE
1035
DAC FULL-SCALE ERROR
vs. TEMPERATURE
3
1038
2 INTERNAL REFERENCE
1
0
EXTERNAL REFERENCE = 4.096V
-1
-2
MAX1020/MAX1022/MAX1058
-3
-40 -15 10
35
TEMPERATURE (°C)
60
85
0.20
0.15
0.10
0.05
MAX1020/MAX1022/MAX1058
EXTERNAL REFERENCE = 4.096V
0
4.750 4.875 5.000 5.125
SUPPLY VOLTAGE (V)
DAC FULL-SCALE ERROR
vs. TEMPERATURE
3
5.250
2 INTERNAL REFERENCE
1
0
EXTERNAL REFERENCE = 2.5V
-1
-2
MAX1057
-3
-40 -15
10 35
TEMPERATURE (°C)
60
85
0.4
0.3
0.2
0.1
MAX1057
EXTERNAL REFERENCE = 2.5V
0
2.7 3.0 3.3
SUPPLY VOLTAGE (V)
DAC FULL-SCALE ERROR
vs. REFERENCE VOLTAGE
1.00
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
MAX1020/MAX1022/MAX1058
-1.00
0123
4
REFERENCE VOLTAGE (V)
3.6
5
______________________________________________________________________________________ 11

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