MAX1407CAI+ Maxim Integrated Products, MAX1407CAI+ Datasheet

IC DAS 16BIT LP 28-SSOP

MAX1407CAI+

Manufacturer Part Number
MAX1407CAI+
Description
IC DAS 16BIT LP 28-SSOP
Manufacturer
Maxim Integrated Products
Type
Data Acquisition System (DAS)r
Datasheet

Specifications of MAX1407CAI+

Resolution (bits)
16 b
Sampling Rate (per Second)
60
Data Interface
Serial
Voltage Supply Source
Analog and Digital
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Number Of Converters
1
Resolution
16 bit
Interface Type
Serial (4-Wire, SPI, QSPI, Microwire)
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Power Dissipation
762 mW
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1407/MAX1408/MAX1409/MAX1414 are low-
power, general-purpose, multichannel data-acquisition
systems (DAS). These devices are optimized for low-
power applications. All the devices operate from a sin-
gle +2.7V to +3.6V power supply and consume a
maximum of 1.15mA in Run mode and only 2.5µA in
Sleep mode.
The MAX1407/MAX1408/MAX1414 feature a differential
8:1 input multiplexer to the ADC, a programmable
three-state digital output, an output to shutdown an
external power supply, and a data ready output from
the ADC. The MAX1408 has eight auxiliary analog
inputs, while the MAX1407/MAX1414 include four auxil-
iary analog inputs and two 10-bit force/sense DACs.
The MAX1414 features a 50mV trip threshold for the
signal-detect comparator while the others have a 0mV
trip threshold. The MAX1409 is a 20-pin version of the
DAS family with a differential 4:1 input multiplexer to the
ADC, one auxiliary analog input, and one 10-bit
force/sense DAC.
The MAX1407/MAX1408/MAX1414 are available in
space-saving 28-pin SSOP packages, while the
MAX1409 is available in a 20-pin SSOP package.
19-2229; Rev 0; 10/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
Medical Instruments
Industrial Control Systems
Portable Equipment
Data-Acquisition System
Automatic Testing
Robotics
Low-Power, 16-Bit Multichannel DAS with
Internal Reference,10-Bit DACs, and RTC
RESET
AGND
OUT1
________________________________________________________________ Maxim Integrated Products
AV
CPLL
WU1
WU2
FB2
FB1
REF
IN0
IN1
IN2
DO
DD
10
11
12
13
14
1
2
3
4
5
6
7
8
9
General Description
MAX1407
MAX1414
Pin Configurations
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Applications
OUT2
IN3
DV
DGND
SCLK
DIN
DOUT
INT
CLKIN
CLKOUT
FOUT
CS
DRDY
SHDN
DD
o +2.7V to +3.6V Supply Voltage Range in Standby,
o 1.15mA Run Mode Supply Current
o 2.5µA Sleep Mode Supply Current (Wake-Up, RTC,
o Multichannel 16-Bit Sigma-Delta ADC
o 10-Bit Force/Sense DACs
o Buffered 1.25V, 18ppm/°C (typ) Bandgap
o SPI™/QSPI™ or MICROWIRE™-Compatible Serial
o System Support Functions
o 28-Pin SSOP (MAX1407/MAX1408/MAX1414),
Pin Configurations continued at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX1407CAI
MAX1408CAI
MAX1409CAP
MAX1414CAI
Idle, and Run Mode (Down to 1.8V in Sleep Mode)
and Voltage Monitor Active)
Reference Output
Interface
20-Pin SSOP (MAX1409)
±1.5 LSB (typ) Integral Nonlinearity
30Hz or 60Hz Continuous Conversion Rate
Buffered or Unbuffered Mode
Gain of +1/3, +1, or +2V/V
Unipolar or Bipolar Mode
On-Chip Offset Calibration
RTC (Valid til 9999) and Alarm
High-Frequency PLL Clock Output (2.4576MHz)
+1.8V and +2.7V RESET and Power-Supply
Voltage Monitors
Signal Detect Comparator
Interrupt Generator (INT and DRDY)
Three-State Digital Output
Wake-Up Circuitry
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
28 SSOP
28 SSOP
20 SSOP
28 SSOP
PIN-PACKAGE
Features
1

Related parts for MAX1407CAI+

MAX1407CAI+ Summary of contents

Page 1

... IN2 14 15 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. o +2.7V to +3.6V Supply Voltage Range in Standby, Idle, and Run Mode (Down to 1.8V in Sleep Mode) o 1.15mA Run Mode Supply Current o 2.5µ ...

Page 2

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ABSOLUTE MAXIMUM RATINGS AV to AGND .........................................................-0. ...................................................... -0.3V to +0. Analog Inputs to AGND .........................-0.3V to +(AV Digital Inputs to DGND.............................................-0.3V ...

Page 3

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ELECTRICAL CHARACTERISTICS (continued) ( +2.7V to 3.6V, 4.7µF at REF, internal CLKOUT unless otherwise noted. Typical values are ...

Page 4

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ELECTRICAL CHARACTERISTICS (continued) ( +2.7V to 3.6V, 4.7µF at REF, internal CLKOUT unless otherwise noted. Typical values are ...

Page 5

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ELECTRICAL CHARACTERISTICS (continued) ( +2.7V to 3.6V, 4.7µF at REF, internal CLKOUT unless otherwise noted. Typical values are ...

Page 6

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ELECTRICAL CHARACTERISTICS (continued) ( +2.7V to 3.6V, 4.7µF at REF, internal CLKOUT unless otherwise noted. Typical values are ...

Page 7

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC TIMING CHARACTERISTICS (continued) (MAX1407/MAX1408/MAX1409/MAX1414: AV PARAMETER SYMBOL TYPICAL TIMING PARAMETERS OUT1/OUT2 Turn-Off Time Sleep Voltage Monitor Timeout Period WU1 or WU2 Pulse Width Shutdown Deassert Delay FOUT Turn-On Time INT ...

Page 8

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC DOUT DOUT C LOAD 6kΩ 50pF DGND HIGH LOAD CIRCUITS FOR DISABLE TIME ( 3V, MAX1407 used, T VDD VDD A ...

Page 9

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ( 3V, MAX1407 used, T VDD VDD A MAXIMUM INL vs. V (UNIPOLAR MODE +25°C, PSEUDO-DIFFERENTIAL INPUT 2.7 2.9 ...

Page 10

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ( 3V, MAX1407 used, T VDD VDD A MAXIMUM INL vs. COMMON-MODE INPUT VOLTAGE (BIPOLAR MODE, BUFFERED MODE, V FULLY DIFFERENTIAL INPUT +25°C) 3.0 2.5 ...

Page 11

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ( 3V, MAX1407 used, T VDD VDD A GAIN ERROR vs. TEMPERATURE 0. 0.11 B 0.10 D 0.09 A 0.08 C 0.07 0.06 ...

Page 12

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ( 3V, MAX1407 used, T VDD VDD A DAC GAIN ERROR vs. TEMPERATURE 0.15 IDLE MODE 0 -0.15 -0.30 -0.45 -0.60 -0.75 -0.90 -1.05 -1.20 -1.35 INTERNAL ...

Page 13

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC ( 3V, MAX1407 used, T VDD VDD A DAC OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 1.2450 OUTPUT AT FULL SCALE NO LOAD DAC BUFFER IN UNITY GAIN 1.2445 ...

Page 14

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC MAX1407 MAX1408 MAX1409 MAX1414 1 — — — 1 — — — — 3 — — — 3 — 4 — 2 — 4 — ...

Page 15

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC MAX1407 MAX1408 MAX1409 MAX1414 — 28 — ...

Page 16

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC CS SERIAL SCLK INTERFACE DIN DOUT OUT2 OUT1 IN3 IN2 IN1 IN0 REF AV DD FB2 FB1 IN3 IN2 INPUT IN1 IN0 REF AGND *MAX1414 HAS A +50mV SIGNAL-DETECT COMPARATOR ...

Page 17

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC CS SCLK DIN DOUT IN5 IN4 IN3 IN2 IN1 IN0 REF AV DD IN7 IN6 IN3 IN2 IN1 IN0 REF AGND Figure 2. MAX1408 Functional Diagram CS SCLK INTERFACE DIN ...

Page 18

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC LX OUT RST LX MAX1833 SHDN BATT GND 10µF V BAT 4.7µ SENSOR RE CE Figure 4. MAX1407/MAX1414 Typical Application Circuit R EXT C EXT Figure ...

Page 19

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC EXT MUX EXT PIN ST Figure 6. Analog Input—Unbuffered Mode When used in unbuffered mode, the switched capacitor sampling front end of the ...

Page 20

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC 0 -20 -40 -60 -80 -100 -120 -140 -160 100 120 140 160 180 200 FREQUENCY (Hz) Figure 7. Frequency Response of the SINC 60Hz) ...

Page 21

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Internal/External Reference The MAX1407/MAX1408/MAX1409/MAX1414 have an internal low-drift +1.25V reference used for both ADC and DAC conversion. The buffered reference output can be used as a reference source for other ...

Page 22

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC CS SCLK DIN DOUT DRDY Figure 8. ADC Conversion Timing Diagram The INT pin ...

Page 23

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC clocks DOUT out of the shift register. DIN and DOUT are transferred as MSB first (data is left justified). Figure 10 shows detailed serial interface timing. All communication with the ...

Page 24

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC CS SCLK DIN DOUT Figure 11. Serial Interface 16-Bit Write Timing Diagram CS SCLK DIN DOUT ...

Page 25

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC CS SCLK DIN DOUT Figure 14. Serial Interface 8-Bit Read Timing Diagram Table 2. Register Summary and Addressing TARGET REGISTER R/W ACCESS ADC Register ...

Page 26

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) NAME MODE RATE DEFAULTS 0 0 MODE: Conversion Mode bit. A logic zero selects a normal ADC conversion, while a logic 1 selects an offset calibration conversion. ...

Page 27

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Table 4. Positive Mux Decoding POSITIVE MUX INPUT MAX1407/MAX1414 MAX1408 REF REF OUT1 IN4 IN0 IN0 IN1 IN1 IN2 IN2 IN3 IN3 OUT2 IN5 Table 5. ...

Page 28

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) OFF15 OFF14 OFF13 OFF7 OFF6 OFF5 The Offset register contains the 16-bit result from the most recently completed ADC offset calibration. The data format is two’s complement ...

Page 29

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) NAME WU2 WU1 DEFAULT 0 0 WU2: Wake-Up2 status bit. When WU2 is pulled low, WU2 is set to a logic 1. Reading the Status register clears ...

Page 30

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Table 7. Common Mask Bits Combinations ALARM REGISTER MASK BITS (BIT 7) AL_SEC AL_MIN M_HOUR ...

Page 31

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) NAME M_HR 12/24 DEFAULT 0 0 M_HR: Alarm mask bit. A logic 1 masks out the hour alarm comparator. 12/24: 12/24-hour mode bit. A logic 1 selects ...

Page 32

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) NAME WE — DEFAULT 0 0 WE: Write Enable bit. WE must be set to “1” before any write operation to the clock and the alarm register. ...

Page 33

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC FIRST BIT (MSB) NAME — 10MIN2 DEFAULT 0 0 10MIN[2:0]: These are the 10 minute bits (0–50 min- utes) of the RTC. FIRST BIT (MSB) NAME — 12/24 DEFAULT 0 ...

Page 34

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC 10MO: This is the 10 month bit (10–12 months) MONTH JAN 10MO MO[3:0] 01h MONTH JUL 10MO MO[3:0] 07h FIRST BIT (MSB) NAME — — DEFAULT 0 0 DAY[2:0]: These ...

Page 35

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Table 8. Related Bit Values During Specified Mode CIRCUIT BLOCK BIT INITIAL POWER-UP 32kHz Oscillator CH 0 (oscillator is on) RTC CH 0 (RTC is on) Low V Voltage 1 ...

Page 36

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC DA1E: DAC1 Power Enable. A logic 1 powers DAC1, while a logic 0 powers it down. The output buffer goes high impedance in power-down mode. FIRST BIT (MSB) SHDE NAME ...

Page 37

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Applications Information Alarm and RTC Programming Three write operations are needed for every update of the ALARM and RTC registers. First set the WE bit of the Alarm/Clock_CTRL Register to ...

Page 38

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC RESET t DSLP (OPEN-DRAIN 32kHz CLOCK LO HI WU1,WU2 (INT. PULLUP SHDN LO HI FOUT (2.4576MHz INT ...

Page 39

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Table 9. Power States of Individual Blocks at Different Modes of Operation CIRCUIT BLOCKS Serial Interface Wake-Up Circuitry Crystal Oscillator RTC with Alarm RESET Voltage Monitor Low V Voltage Monitor ...

Page 40

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC MAX1407/MAX1409/MAX1414 DAC 1 REF DAC 2 AGND DGND THE MAX1409 HAS ONE DAC V = 1.25V REF Figure 16. Unipolar Output Circuit MAX1407/MAX1409/MAX1414 FB1 DAC 1 FB2 REF DAC 2 ...

Page 41

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC Table 11. Unipolar Code Table DAC CONTENTS ANALOG OUTPUT MSB LSB 1111 1111 11 +V 1000 0000 01 +V 1000 0000 00 +V (512/1024 REF 0111 1111 11 ...

Page 42

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC V+ MAX640 SHDN LBI VFB GND V BAT E1* 33µF *ONE TRANSISTOR (9V), ONE J CELL (6V), OR FOUR ALKALINE CELLS Figure 21. Power-Supply Circuit Using MAX640 Step-Down DC-DC Converter ...

Page 43

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC MAX1407 MAX1409 MAX1414 REF OUT1 10-BIT DAC IN0 AUX. IN1 VOLTAGE IN2 INPUTS IN3 BAND BUF GAP ALL I/O AVAILABLE AS INPUTS TO ADC AND COMPARATOR. MAX1409 HAS IN0, OUT1, ...

Page 44

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC REF R L Figure 27. Thermistor Application Circuit CJC THERMOCOUPLE R JUNCTION 4.7µF Figure 28. Thermocouple Application Circuit maintain the reference electrode bias voltage by virtue of ...

Page 45

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC REF Figure 29. Strain-Gauge Application Circuit Thermocouple Measurement Figure 28 shows a thermocouple connected to the dif- ferential inputs ...

Page 46

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC the placement of the crystal on the PC board layout to insure that extra clock “ticks” do not couple onto the crystal pins important to place the ...

Page 47

Low-Power, 16-Bit Multichannel DAS with Internal Reference,10-Bit DACs, and RTC LX OUT RST DC-DC CONVERTER BATT SHDN GND SHDN IN0 REF V BAT IN1 OUT1 FB1 WE SENSOR FB2 RE CE OUT2 ______________________________________________________________________________________ Typical Operating Circuit CPLL ...

Page 48

... 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. 48 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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