MAX1020BETX+ Maxim Integrated Products, MAX1020BETX+ Datasheet

IC ADC/DAC 10BIT 36-TQFN-EP

MAX1020BETX+

Manufacturer Part Number
MAX1020BETX+
Description
IC ADC/DAC 10BIT 36-TQFN-EP
Manufacturer
Maxim Integrated Products
Type
ADC, DACr
Datasheet

Specifications of MAX1020BETX+

Resolution (bits)
10 b
Sampling Rate (per Second)
225k
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Voltage Supply Source
Analog and Digital
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
36-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
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.
19-3280; Rev 4; 3/08
* EP = Exposed pad.
** Number of resolution bits refers to both DAC and ADC.
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.
MAX1020BETX
MAX1022BETX
MAX1057BETM -40°C to +85°C 48 Thin QFN-EP*
MAX1058BETM -40°C to +85°C 48 Thin QFN-EP*
PART
Controls for Optical Components
Base-Station Control Loops
System Supervision and Control
Data-Acquisition Systems
10-Bit, Multichannel ADCs/DACs with FIFO,
s) and low digital feedthrough (0.5nV
-40°C to +85°C 36 Thin QFN-EP*
-40°C to +85°C 36 Thin QFN-EP*
TEMP RANGE
________________________________________________________________ Maxim Integrated Products
General Description
Temperature Sensing, and GPIO Ports
PIN-PACKAGE
Applications
VOLTAGE
4.096
4.096
4.096
REF
(V)
2.5
s) of
Ordering Information/Selector Guide
VOLTAGE (V)
4.75 to 5.25
4.75 to 5.25
4.75 to 5.25
♦ 10-Bit, 225ksps ADC
♦ 10-Bit, Octal, 2µs Settling DAC
♦ Internal Reference or External Single-Ended/
♦ Internal ±1°C Accurate Temperature Sensor
♦ On-Chip FIFO Capable of Storing 16 ADC
♦ On-Chip Channel-Scan Mode and Internal
♦ Analog Single-Supply Operation
♦ Digital Supply: 2.7V to AV
♦ 25MHz, SPI/QSPI/MICROWIRE Serial Interface
♦ AutoShutdown Between Conversions
♦ Low-Power ADC
♦ Low-Power DAC: 1.5mA
♦ Evaluation Kit Available (Order MAX1258EVKIT)
ANALOG
2.7 to 3.6
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.
Pin Configurations appear at end of data sheet.
SUPPLY
Differential Reference
Conversion Results and One Temperature Result
Data-Averaging Features
Analog Multiplexer with True-Differential
16 Single-Ended Channels or 8 Differential
12 Single-Ended Channels or 6 Differential
8 Single-Ended Channels or 4 Differential
Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
Ultra-Low Glitch Energy (4nV
Power-Up Options from Zero Scale or Full Scale
Excellent Accuracy: ±1 LSB INL
Internal Reference Voltage 2.5V or 4.096V
+2.7V to +3.6V or +4.75V to +5.25V
2.5mA at 225ksps
22µA at 1ksps
0.2µA at Shutdown
Track/Hold (T/H)
Channels (Unipolar or Bipolar)
(MAX1057/MAX1058)
Channels (Unipolar or Bipolar) (MAX1022)
Channels (Unipolar or Bipolar) (MAX1020)
RESOLUTION
BITS**
10
10
10
10
CHANNELS
ADC
DD
16
12
16
8
s)
CHANNELS
DAC
Features
8
8
8
8
GPIOs
12
12
4
0
1

Related parts for MAX1020BETX+

MAX1020BETX+ Summary of contents

Page 1

... Shutdown ♦ Low-Power DAC: 1.5mA ♦ Evaluation Kit Available (Order MAX1258EVKIT) 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. Ordering Information/Selector Guide REF ANALOG RESOLUTION VOLTAGE ...

Page 2

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ABSOLUTE MAXIMUM RATINGS AV to AGND .........................................................-0.3V to +6V DD DGND to AGND.....................................................-0.3V to +0. .......................................................-3.0V to +0. Digital Inputs to DGND.............................................-0.3V to +6V Digital ...

Page 3

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 4

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 5

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 6

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 7

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 8

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) ( 2.7V to 3.6V (MAX1057), external reference (MAX1020/MAX1022/MAX1058), external reference -40°C to +85°C, unless otherwise noted. Typical values ...

Page 9

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A ANALOG SHUTDOWN CURRENT vs. ...

Page 10

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A ADC OFFSET ERROR vs. ...

Page 11

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A DAC INTEGRAL NONLINEARITY vs. ...

Page 12

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A DAC FULL-SCALE ERROR vs. ...

Page 13

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A ADC FFT PLOT 0 ...

Page 14

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A TEMPERATURE SENSOR ERROR vs. ...

Page 15

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ( (MAX1057), external 4.096V (MAX1020/MAX1022/MAX1058), f REF tor at REF +25°C, unless otherwise noted.) A DAC DIGITAL FEEDTHROUGH (R ...

Page 16

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports MAX1057/ MAX1020 MAX1022 MAX1058 1, 2 — — 9–12, 9–12, 12–15, 16–19 ...

Page 17

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports MAX1057/ MAX1020 MAX1022 MAX1058 27–31, 34 — — 35 — — 36 — — — 1 — 23, 25, 27–31, — — 33, 34, 35 — 36 ...

Page 18

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Detailed Description The MAX1020/MAX1022/MAX1057/MAX1058 integrate a multichannel, 10-bit ADC and an octal, 10-bit DAC in a single IC. These devices also include a temperature sensor and configurable GPIOs with a ...

Page 19

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports GPIOB0– GPIOC0– GPIOA0– GPIOA3 GPIOB3 GPIOC3 USER-PROGRAMMABLE I/O CONTROL OSCILLATOR SCLK CS DIN DOUT TEMPERATURE SENSOR EOC LOGIC CONTROL CNVST AIN0 10-BIT FIFO AND SAR T/H AIN13 ALU ADC REF2/ ...

Page 20

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Table 1. Command Byte (MSB First) REGISTER NAME BIT 7 Conversion 1 Setup 0 ADC Averaging 0 DAC Select 0 Reset 0 GPIO Configure* 0 GPIO Write* 0 GPIO Read* ...

Page 21

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Unipolar or Bipolar Conversions Address the unipolar- and bipolar-mode registers through the setup register (bits 1 and 0). See Table 5 for the setup register. See Figures 3 and 4 ...

Page 22

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports The first 2 bytes of data read out after a temperature measurement always contain the 12-bit temperature result, preceded by four leading zeros, MSB first. If another temperature measurement is ...

Page 23

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports GPIOC1). Read and write to the GPIOs as detailed in Table 1 and Tables 12–19. Also, see the GPIO Command section. See Figures 11 and 12 for GPIO timing. Write ...

Page 24

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Conversion Register Select active analog input channels, scan modes, and a single temperature measurement per scan by issuing a command byte to the conversion register. Table 4 details channel selection, ...

Page 25

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Table 5. Setup Register* BIT NAME BIT — 7 (MSB) — 6 CKSEL1 5 CKSEL0 4 REFSEL1 3 REFSEL0 2 DIFFSEL1 1 DIFFSEL0 0 (LSB) * See below for bit ...

Page 26

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports If any of the above conditions exist, the ADC reference is always on, but there is a 188 clock-cycle delay before temperature-sensor measurements begin, if requested. Table 5c. Clock Mode ...

Page 27

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Table 6. Unipolar-Mode Register (Addressed Through the Setup Register) BIT NAME BIT UCH0/1 7 (MSB) Configure AIN0 and AIN1 for unipolar differential conversion. UCH2/3 6 Configure AIN2 and AIN3 for ...

Page 28

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports must be followed by 1 byte of data that is written to the unipolar-mode register or bipolar-mode register. Hold CS low and run 16 SCLK cycles before pulling CS high. ...

Page 29

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports disables averaging. For example, if AVGON = 1, NAVG[1:0] = 00, NSCAN[1: and SCAN[1:0] = 10, 16 results are written to the FIFO, with each result being the ...

Page 30

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports CS rising edge. All GPIOs default to inputs upon power- up. The data in the register controls the function of each GPIO, as shown in Tables 13–19. Table 13. MAX1020 ...

Page 31

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Write the command byte 00000001 to indicate a GPIO read operation. The eight SCLK cycles following the command byte transfer the state of the GPIOs to DOUT in the MAX1020. ...

Page 32

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Table 20. DAC Serial-Interface Configuration 16-BIT SERIAL WORD MSB CONTROL BITS ...

Page 33

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Table 21. DAC Power-Up and Power-Down Commands CONTROL DATA BITS BITS — — — — — — — — ...

Page 34

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Partial Reads and Partial Writes If the first byte of an entry in the FIFO is partially read (CS is pulled high after fewer than eight SCLK cycles), the remaining ...

Page 35

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports CNVST CS SCLK DOUT EOC X = DON'T CARE. Figure 6. Clock Mode 00—After writing a command byte, set CNVST low for at least 40ns to begin a conversion. t ...

Page 36

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports DIN CS SCLK DOUT t DOV EOC X = DON'T CARE. Figure 8. Clock Mode 10—The command byte to the conversion register begins the acquisition (CNVST is not required). version. ...

Page 37

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports DIN (ACQUISITION1) CS SCLK DOUT EOC X = DON'T CARE. Figure 9. Clock Mode 11—Externally Timed Acquisition, Sampling, and Conversion without CNVST Externally Clocked Acquisitions and Conversions Using the Serial ...

Page 38

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports SCLK DIN D15 D14 t DOE D15 DOUT D7 t CSS t CSPWH CS Figure 10. DAC/GPIO Serial-Interface Timing (Clock Modes 00, 01, and ...

Page 39

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports SCLK D15 D14 DIN t DOE D15 DOUT D7 t CSS t CSPWH CS Figure 11. DAC/GPIO Serial-Interface Timing (Clock Mode 11) SCLK 1 ...

Page 40

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports CS t GSU GPIO INPUT/OUTPUT Figure 13. GPIO Timing LDAC OUT_ Figure 14. LDAC Functionality Drive LDAC low to transfer the content of the input reg- isters to the DAC ...

Page 41

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Unipolar ADC Offset Error For an ideal converter, the first transition occurs at 0.5 LSB, above zero. Offset error is the amount of deviation between the measured first transition point ...

Page 42

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports Full-Power Bandwidth A large -0.5dBFS analog input signal is applied to an ADC, and the input frequency is swept up to the point where the amplitude of the digitized conversion ...

Page 43

Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports TOP VIEW GPIOA0 1 GPIOA1 2 EOC DGND 5 MAX1020 DOUT 6 SCLK 7 DIN 8 OUT0 9 THIN QFN CNVST/AIN15 1 GPIOA0 2 GPIOA1 3 ...

Page 44

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 44 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...

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