MAX1031BCTI+ Maxim Integrated Products, MAX1031BCTI+ Datasheet

IC ADC 10BIT 300KSPS 28-TQFN-EP

MAX1031BCTI+

Manufacturer Part Number
MAX1031BCTI+
Description
IC ADC 10BIT 300KSPS 28-TQFN-EP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1031BCTI+

Number Of Bits
10
Sampling Rate (per Second)
300k
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
1.67W
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1027/MAX1029/MAX1031 are serial 10-bit ana-
log-to-digital converters (ADCs) with an internal reference
and an internal temperature sensor. These devices fea-
ture on-chip FIFO, scan mode, internal clock mode, inter-
nal averaging, and AutoShutdown™. The maximum
sampling rate is 300ksps using an external clock. The
MAX1031 has 16 input channels, the MAX1029 has 12
input channels, and the MAX1027 has 8 input channels.
All input channels are configurable for single-ended or
differential inputs in unipolar or bipolar mode. All three
devices operate from a +3V supply and contain a 10MHz
SPI™/QSPI™/MICROWIRE™-compatible serial port.
The MAX1031 is available in 28-pin 5mm x 5mm TQFN
with exposed pad and 24-pin QSOP packages. The
MAX1027/MAX1029 are only available in QSOP pack-
ages. All three devices are specified over the extended
-40°C to +85°C temperature range.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
19-2854; Rev 4; 11/09
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.
________________________Applications
Pin Configurations continued at end of data sheet.
TOP VIEW
System Supervision
Data-Acquisition Systems
Industrial Control Systems
Patient Monitoring
Data Logging
Instrumentation
CNVST/AIN7
REF-/AIN6
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
________________________________________________________________ Maxim Integrated Products
1
2
6
3
4
5
7
8
General Description
MAX1027
QSOP
Temp Sensor, Internal Reference
16
15
14
13
12
11
10
9
10-Bit 300ksps ADCs with FIFO,
EOC
DOUT
DIN
CS
SCLK
V
GND
REF+
DD
♦ Internal Temperature Sensor (±1°C Accuracy)
♦ 16-Entry First-In/First-Out (FIFO)
♦ Analog Multiplexer with True Differential
♦ Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing
♦ Scan Mode, Internal Averaging, and Internal Clock
♦ Low-Power Single +3V Operation
♦ Internal 2.5V Reference or External Differential
♦ 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible
♦ Space-Saving 28-Pin 5mm x 5mm TQFN Package
Ordering Information continued at end of data sheet.
MAX1027BCEE-T
MAX1027BEEE-T
MAX1029BCEP-T
MAX1029BEEP-T
Track/Hold
Codes Over Temperature
Reference
Interface
16-, 12-, 8-Channel Single Ended
8-, 6-, 4-Channel True Differential
(Unipolar or Bipolar)
1mA at 300ksps
PART
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
10
1
2
3
4
5
6
7
8
9
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
MAX1029
0°C to +70°C
0°C to +70°C
Ordering Information
QSOP
Pin Configurations
20
19
18
17
16
15
14
13
12
11
EOC
DOUT
DIN
CS
SCLK
V
GND
REF+
CNVST/AIN11
REF-/AIN10
DD
16 QSOP
16 QSOP
20 QSOP
20 QSOP
PIN-PACKAGE
Features
1

Related parts for MAX1031BCTI+

MAX1031BCTI+ Summary of contents

Page 1

... System Supervision Data-Acquisition Systems Industrial Control Systems Patient Monitoring Data Logging Instrumentation AutoShutdown is a trademark of Maxim Integrated Products, Inc. SPI/QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. TOP VIEW AIN0 1 AIN1 2 ...

Page 2

ADCs with FIFO, Temp Sensor, Internal Reference ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD CS, SCLK, DIN, EOC, DOUT to GND.........-0. AIN0–AIN13, REF-/AIN_, CNVST/AIN_, REF+ to GND.........................................-0. Maximum Current into Any ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V 300kHz SAMPLE noted. Typical values are +25°C.) A PARAMETER SYMBOL CONVERSION RATE Power-Up Time Acquisition Time Conversion Time t External Clock Frequency f SCLK Duty ...

Page 4

ADCs with FIFO, Temp Sensor, Internal Reference ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V 300kHz SAMPLE noted. Typical values are +25°C.) A PARAMETER SYMBOL DIGITAL INPUTS (SCLK, DIN, , Input ...

Page 5

TIMING CHARACTERISTICS (Figure 1) PARAMETER SYMBOL SCLK Clock Period SCLK Duty Cycle SCLK Fall to DOUT Transition CS Rise to DOUT Disable CS Fall to DOUT Enable DIN to SCLK Rise Setup SCLK Rise to DIN Hold CS to SCLK ...

Page 6

ADCs with FIFO, Temp Sensor, Internal Reference (V = +3V +2.5V 4.8MHz REF SCLK SFDR vs. FREQUENCY 120 100 0 100 1000 FREQUENCY (kHz) SHUTDOWN ...

Page 7

V = +2.5V 4.8MHz REF SCLK INTERNAL REFERENCE VOLTAGE vs. TEMPERATURE 2.510 2.506 2.502 2.498 2.494 2.490 -40 - TEMPERATURE (°C) GAIN ERROR vs. SUPPLY VOLTAGE 0.6 0.4 0.2 0 ...

Page 8

ADCs with FIFO, Temp Sensor, Internal Reference MAX1031 MAX1031 MAX1029 MAX1027 TQFN QSOP 2–12, 26, 1–14 — 27, 28 — — 1–10 — — — — — — 11 — — — — — ...

Page 9

CS t CSS SCLK DIN t DOE DOUT Figure 1. Detailed Serial-Interface Timing Diagram CS DIN SCLK CNVST AIN1 AIN2 AIN15 REF- REF+ Figure 2. Functional Diagram _______________________________________________________________________________________ 10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal ...

Page 10

ADCs with FIFO, Temp Sensor, Internal Reference Detailed Description The MAX1027/MAX1029/MAX1031 are low-power, seri- al-output, multichannel ADCs with temperature-sensing capability for temperature-control, process-control, and monitoring applications. These 10-bit ADCs have inter- nal track and hold (T/H) circuitry that ...

Page 11

REF AIN0-AIN15 DAC GND (SINGLE ENDED); AIN0, AIN2, AIN4…AIN14 CIN+ (DIFFERENTIAL) HOLD GND CIN- (SINGLE ENDED); AIN1, AIN3, AIN5…AIN15 HOLD (DIFFERENTIAL Figure 3. Equivalent Input Circuit In differential mode, the T/H samples the difference between two analog ...

Page 12

ADCs with FIFO, Temp Sensor, Internal Reference temperature measurement is performed before the first temperature result is read out, the old measurement is overwritten by the new result. Temperature results are in degrees Celsius (two’s complement ...

Page 13

Table 2. Conversion Register* BIT BIT FUNCTION NAME — 7 (MSB) Set select conversion register. CHSEL3 6 Analog input channel select. CHSEL2 5 Analog input channel select. CHSEL1 4 Analog input channel select. CHSEL0 3 Analog input ...

Page 14

ADCs with FIFO, Temp Sensor, Internal Reference Table 3. Setup Register* BIT NAME BIT — 7 (MSB) Set to zero to select setup register. — 6 Set select setup register. Clock mode and CNVST configuration. ...

Page 15

Select scan mode 10 to scan the same channel multiple times. Clock mode 11 disables averaging. Write to the reset register (as shown in Table 7) to clear the FIFO or to reset all registers to their ...

Page 16

ADCs with FIFO, Temp Sensor, Internal Reference Table 6. Averaging Register* BIT NAME BIT — 7 (MSB) Set to zero to select averaging register. — 6 Set to zero to select averaging register. — 5 Set to 1 ...

Page 17

Internally Timed Acquisitions and Conversions Using CNVST Performing Conversions in Clock Mode 00 In clock mode 00, the wake up, acquisition, conversion, and shutdown sequences are initiated through CNVST and performed automatically using the internal oscilla- tor. Results are added ...

Page 18

ADCs with FIFO, Temp Sensor, Internal Reference CNVST (ACQUISITION1) (ACQUISITION2) CS (CONVERSION1) SCLK DOUT EOC REQUEST MULTIPLE CONVERSIONS BY SETTING CNVST LOW FOR EACH CONVERSION. Figure 5. Clock Mode 01 (CONVERSION BYTE) DIN CS SCLK DOUT EOC THE ...

Page 19

DIN (ACQUISITION1) CS SCLK DOUT EOC EXTERNALLY TIMED ACQUISITION, SAMPLING AND CONVERSION WITHOUT CNVST. Figure 7. Clock Mode 11 clock. Scanning and averaging are disabled, and the conversion result is available at DOUT during the con- version. See Figure 7 ...

Page 20

ADCs with FIFO, Temp Sensor, Internal Reference OUTPUT CODE FULL-SCALE TRANSITION 111 110 101 011 010 00 . ...

Page 21

TOP VIEW AIN0 1 AIN1 2 AIN2 3 AIN3 4 MAX1031 AIN4 5 AIN5 6 AIN6 7 AIN7 8 AIN8 9 AIN9 10 AIN10 11 AIN11 12 QSOP Effective Number of Bits Effective number of bits (ENOB) indicates the global ...

Page 22

... 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. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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