MAXIM MAX1358, MAX1359, MAX1360 User Manual

General Description

The MAX1358/MAX1359/MAX1360 smart data-acquisition systems (DAS) are each based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor (µP)-based system. These devices integrate an ADC, DACs, operational amplifiers, internal 1.25V/2.048V/2.5V selectable reference, temperature sensors, analog switches, a 32kHz oscillator, a real-time clock (RTC) with alarm, a high-frequency-locked loop (FLL) clock, four user-programmable I/Os, an interrupt generator, and 1.8V and 2.7V voltage monitors in a single chip.

The MAX1358/MAX1359/MAX1360 have dual 10:1 differential input multiplexers (muxes) that accept signal levels from 0 to AVDD. An on-chip 1x to 8x programmable-gain amplifier (PGA) measures low-level signals and reduces external circuitry required.

The MAX1358/MAX1359/MAX1360 operate from a single +1.8V to +3.6V supply and consume only 1.4mA in normal mode and only 6.1µA in sleep mode.

The MAX1358 has two DACs with one uncommitted op amp; the MAX1359 has one DAC with two uncommitted op amps; and the MAX1360 has three uncommitted op amps.

The serial interface is compatible with either SPI™/QSPI™ or MICROWIRE™, and is used to power up, configure, and check the status of all functional blocks.

The MAX1358/MAX1359/MAX1360 are available in a space-saving 40-pin TQFN package and are specified over the commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.

Applications

Battery-Powered and Portable Devices

Electrochemical and Optical Sensors

Medical Instruments

Industrial Control

Data-Acquisition Systems

Features

♦ +1.8V to +3.6V Single-Supply Operation ♦ Multichannel 16-Bit Sigma-Delta ADC

10sps to 512sps Programmable Conversion Rate Self and System Offset and Gain Calibration PGA with Gains of 1, 2, 4, or 8 Unipolar and Bipolar Modes 10-Input Differential Multiplexer

♦ 10-Bit Force-Sense DACs ♦ Uncommitted Op Amps ♦ Dual SPDT Analog Switches ♦ 1.25V, 2.048V, or 2.5V Selectable Voltage

Reference

♦ Internal Charge Pump ♦ System Support

Real Time Clock and Alarm Register Internal/External Temperature Sensor Internal Oscillator with Clock Output User-Programmable I/O and Interrupt Generator VDDMonitors

♦ SPI/QSPI/MICROWIRE, 4-Wire Serial Interface ♦ Space-Saving (6mm x 6mm x 0.8mm) 40-Pin TQFN

Package

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3710; Rev 1; 8/05

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.

PART

TEMP RANGE

PINPACKAGE

PKG

CODE

MAX1358AETL*

T4066-4

MAX1358BETL

T4066-4

MAX1358ACTL*

T4066-4

MAX1358BCTL*

T4066-4

MAX1359AETL*

T4066-4

MAX1359BETL

T4066-4

MAX1359ACTL*

T4066-4

MAX1359BCTL

T4066-4

MAX1360AETL*

T4066-4

MAX1360BETL*

T4066-4

MAX1360ACTL*

T4066-4

MAX1360BCTL*

T4066-4

SPI/QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

*Future product—contact factory for availability. **EP = Exposed pad.

Pin Configurations appear at end of data sheet.

PART DACs OP AMPs

SPDT/SPST

SWITCHES

EXTERNAL ADC

INPUTS

UPIOs

MAX1358 2 1 2/2 2 4

MAX1359 1 2 2/1 2 4

MAX1360 0 3 2/0 2 4

Selector Guide

-40°C to +85°C 40 TQFN-EP**

-40°C to +85°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP**

-40°C to +85°C 40 TQFN-EP**

-40°C to +85°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP**

-40°C to +85°C 40 TQFN-EP**

-40°C to +85°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP** 0°C to +70°C 40 TQFN-EP**

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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.

AVDDto AGND .........................................................-0.3V to +4V

to DGND.........................................................-0.3V to +4V

to DV

............................................................-4V to +4V

AGND to DGND.....................................................-0.3V to +0.3V

CLK32K to DGND....................................-0.3V to (DV

+ 0.3V)

UPIO_ to DGND........................................................-0.3V to +4V

Digital Inputs to DGND ............................................-0.3V to +4V

Analog Inputs to AGND ...........................-0.3V to (AV

+ 0.3V)

Digital Output to DGND…........................-0.3V to (DV

+ 0.3V)

Analog Outputs to AGND.........................-0.3V to (AV

+ 0.3V)

Continuous Current Into Any Pin.........................................50mA

Continuous Power Dissipation (T

= +70°C)

40-Pin TQFN (derate 25.6mW/°C above +70°C) ....2051.3mW

Operating Temperature Range

MAX13_ _ CTL ....................................................0°C to +70°C

MAX13_ _ ETL .................................................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

UNITS

ADC DC ACCURACY

Noise-Free Resolution

Data rate = 10sps, PGA gain = 2; data rate = 10sps to 60sps, PGA gain = 1; no missing codes, Table 1 (Note 2)

16 Bits

Conversion Rate No missing codes, Table 1 10 512 sps

Output Noise No missing codes

µV

RMS

Integral Nonlinearity INL

Unipolar mode, AV

= 3V, data rate = 40sps, PGA gain = 1, T

= +25°C

%FSR

Uncalibrated

Unipolar Offset Error or Bipolar Zero Error (Note 3)

%FSR

Bipolar

Unipolar Offset-Error or Bipolar Zero-Error Temperature Drift (Note 4)

Unipolar

µV/°C

Uncalibrated

Gain Error (Notes 3, 5)

Data rate = 10sps, PGA = 1, calibrated

% FSR

Gain-Error Temperature Coefficient

(Notes 4, 6)

ppm/ °C

DC Positive Power-Supply Rejection Ratio

PSRR

PGA gain = 1, unipolar mode, measured by full-scale error with AV

= 1.8V to 3.6V

73 dB

ADC ANALOG INPUTS (AIN1, AIN2)

DC Input Common-Mode Rejection Ratio

CMRR PGA gain = 1, unipolar mode 85 dB

SYMBOL

MIN TYP MAX

Table 1

Data rate = 10sps, PGA gain = 1, calibrated ±0.003

A grade ±0.003

B grade ±0.004

±1.0

±2.0

±10

±0.6

±0.003

±1.0

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Normal-Mode 60Hz Rejection Ratio

Data rate = 10sps or 60sps, PGA gain = 1, unipolar mode (Note 2)

Normal-Mode 50Hz Rejection Ratio

Data rate = 10sps or 50sps, PGA gain = 1, unipolar mode (Note 2)

Absolute Input Range

Unipolar mode

-0.05 /

REF

Differential Input Range

Bipolar mode

-V

REF

ADC not in measurement mode, mux enabled, T

≤ +55°C, inputs = +0.1V to

(AV

- 0.1V)

±1

DC Input Current (Note 7)

= +85°C ±5

Input Sampling Capacitance C

5pF

Input Sampling Rate

kHz

External Source Impedance at Input

See Table 3

kΩ

FORCE-SENSE DAC (MAX1358/MAX1359 only, RL = 10kΩ and CL = 200pF, FBA = OUTA and FBB = OUTB, unless otherwise noted)

Resolution Guaranteed monotonic 10 Bits Differential Nonlinearity DNL Code 3D hex to 3FF hex ±1 LSB

A grade ±2

Integral Nonlinearity INL

Code 3D hex to 3FF hex

B grade ±4

LSB

Offset Error Reference to code 52 hex ±20 mV

Offset-Error Tempco

µV/°C

Gain Error

±5 LSB

Gain-Error Tempco Excludes offset and reference drift ±1

ppm/°C

Input Leakage Current at SWA/B

SWA/B switches open (Notes 7, 8) ±1nA

±1nA

Input Leakage Current at FBA/B

FBA/B

= +0.3V to

(AV

- 0.3V)

(Note 7)

DAC Output Buffer Leakage Current

DAC buffer disabled (Note 7) ±75 nA

Input Common-Mode Voltage At FBA and FBB 0

Line Regulation AVDD = +1.8V to +3.6V 40 175

µV/V

Load Regulation I

OUT

= ±2mA, CL = 1000pF (Note 2) 0.5

µV/µA

Output Voltage Range

SYMBOL

SAMPLE

Excludes offset and voltage reference error

TA = -40°C to +85°C

TA = 0°C to +70°C ±600

TA = 0°C to +50°C ±400

MIN TYP MAX

100

AGND AV

Gain

AGND AV

21.84

Table 3

±4.4

Gain

0.35

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Output Slew Rate

52 hex to 3FF hex code swing rising or falling, R

= 10kΩ, CL = 100pF

V/ms

Output-Voltage Settling Time 10% to 90% rising or falling to ±0.5 LSB 65 µs

f = 0.1Hz to 10Hz

Input Voltage Noise

Referred to FBA/B,

f = 10Hz to 10kHz

µV

P-P

OUTA/B shorted to AGND 20

Output Short-Circuit Current

OUTA/B shorted to AV

Input-Output SWA/SWB Switch Resistance

Between SWA and OUTA, or SWB and OUTB, HFCK enabled

150 Ω

SWA/SWB Switch Turn-On/Off Time

HFCK enabled

Power-On Time Excluding reference 18 µs

EXTERNAL REFERENCE (REF)

Input Voltage Range

Input Resistance DAC on, internal REF and ADC off 2.5 MΩ

DC Input Leakage Current Internal REF, DAC, and ADC off (Note 7) 100 nA

INTERNAL VOLTAGE REFERENCE (C

REF

= 4.7µF)

A grade

AVDD ≥ +1.8V, TA = +25°C

B grade

A grade

AVDD ≥ +2.2V, TA = +25°C

B grade

A grade

2.5

Reference Output Voltage V

REF

AVDD ≥ +2.7V, TA = +25°C

B grade

2.5

15 50

A grade

REF

Output-Voltage Temperature Coefficient (Note 7)

B grade 15

ppm/oC

REF shorted to AGND 18 mA

Output Short-Circuit Current I

RSC

REF shorted to AV

90 µA

A grade 100

Line Regulation TA = +25°C

B grade 25

µV/V

SOURCE

= 0

to 500µA

1.2

Load Regulation TA = +25°C, V

REF

= 1.25V

SINK

= 0 to

50µA

1.7

µV/µA

SYMBOL

MIN TYP MAX

excludes reference noise

= 1.25V

REF

2.048V, 2.5V

AGND AV

1.237 1.25 1.263

1.213 1.25 1.288

2.027 2.048 2.068

1.987 2.048 2.109

2.475

2.425

200

100

2.525

2.575

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Long-Term Stability (Note 9) 35

ppm/

1000hrs

f = 0.1Hz to 10Hz, AVDD = 3V 50

Output Noise Voltage

f = 10Hz to 10kHz, AV

= 3V

µV

P-P

Turn-On Settling Time Buffer only, settle to 0.1% of final value

µs

TEMPERATURE SENSOR

Temperature Measurement Resolution

ADC resolution is 16-bit, 10sps

°C/LSB

TA = 0°C to +70°C

A grade

= -40oC to +85°C ±1

TA = 0°C to +70°C

Internal Temperature-Sensor Measurement Error

B grade

= -40°C to +85°C ±1

°C

TA = +25°C

TA = 0°C to +70°C ±1A grade

= -40°C to +85°C ±2

TA = 0°C to +70°C

External Temperature-Sensor Measurement Error (Note 10)

B grade

= -40°C to +85°C ±1

°C

Temperature Measurement Noise

°C

RMS

Temperature Measurement Power-Supply Rejection Ratio

0.2

°C/V

OP AMP (RL = 10kΩ connected to AV

/ 2)

Input Offset Voltage V

= 0.5V ±15 mV

Offset-Error Tempco 3

µV/oC

TA = -40°C to +85°C

±1nA

TA = 0°C to +70°C4

IN1+, IN2+, IN3+

= 0°C to +50°C2

TA = -40°C to +85°C

±1nA

TA = 0°C to +70°C20

Input Bias Current (Note 7) I

BIAS

IN1-, IN2-, IN3-

= 0°C to +50°C

Input Offset Current I

±1nA

Input Common-Mode Voltage Range

CMVR 0

AVDD -

0 ≤ VCM ≤ 75mV 60

Common-Mode Rejection Ratio CMRR

75mV < V

≤ AVDD - 0.35V 60 75

SYMBOL

TA = +32°C to +43°C ±0.50

TA = +10°C to +50°C ±0.5

I N 1 _, I N 2 _

= + 0.3V to ( AV

- 0.3V ) ( N ote 7)

D D

MIN TYP MAX

400

100

0.11

±0.5

±0.50

±0.5

0.18

0.006

±300 ±200

0.025

±600 ±400

0.35

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Power-Supply Rejection Ratio PSRR AVDD = +1.8V to +3.6V

Large-Signal Voltage Gain A

VOL

SOURCE

= 10µA

SOURCE

= 50µA

SOURCE

= 100µA

SOURCE

= 500µA

Sourcing

SOURCE

= 2m A 0.5

SINK

= 10µA

SINK

= 50µA

SINK

= 100µA

SINK

= 500µA

Maximum Current Drive ∆V

OUT

Sinking

SINK

= 2m A 0.5

Gain Bandwidth Product GBW Unity-gain configuration, CL = 1nF 80 kHz

Phase Margin

Degrees

Output Slew Rate SR CL = 200pF

V/µs

f = 0.1Hz to 10Hz 80

Input Voltage Noise

Unity-gain configuration

f = 10Hz to 10kHz

µV

P-P

OUT_

shorted to AGND 20

Output Short-Circuit Current

OUT_

shorted to AV

Power-On Time 15 µs

SPDT SWITCHES (SNO_, SNC_, SCM_, HFCK enabled)

SCM_

= 0V

SCM_

= 0.5V

On-Resistance R

150

Ω

±1nA

SNO_, SNC_ Off-Leakage Current (Note 7)

)

SNO_, SNC_ = +0.5V, +1.5V; SCM_ = +1.5V, +0.5V

±2

SCM_ Off-Leakage Current (Note 7)

)

SNO_, SNC_ = +0.5V, +1.5V; SCM_ = +1.5V, +0.5V

±2

SCM_ On-Leakage Current (Note 7)

)

SNO_, SNC_ = +0.5V, +1.5V, or floating;

Input Voltage Range

Turn-On/Off Time

Break-before-make

SYMBOL

100mV ≤ V

≤ AVDD - 100mV (Note 11)

OUT_

Unity-gain configuration, CL = 1nF (Note 11)

= 0.5V to AV

SCM_

TA = 0°C to +50°C

TA = -40°C to +85°C

SNO_(OFF

SNC_(OFF

SCM_(OFF

TA = 0°C to +70°C ±600

TA = 0°C to +50°C ±400

TA = -40°C to +85°C

TA = 0°C to +70°C ±1.2

TA = 0°C to +50°C ±0.8

TA = -40°C to +85°C

SCM_(ON

tON/t

SCM_ = +1.5V, +0.5V

OFF

TA = 0°C to +70°C ±1.2

= 0°C to +50°C ±0.8

MIN TYP MAX

76.5 100

116

0.04

200

AGND AV

100

0.005

0.025

0.05

0.25

0.005

0.025

0.05

0.25

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

_______________________________________________________________________________________ 7

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Input Capacitance

SNO_, SNC_, or SCM_ = AV

or AGND;

switch connected to enabled mux input

5pF

CHARGE PUMP (10µF at REG and 10µF external capacitor between CF+ and CF-)

Maximum Output Current I

OUT

10 mA

No load 3.2 3.3 3.6

Output Voltage

OUT

= 10mA 3.0

Output Voltage Ripple

10µF external capacitor between CPOUT and DGND, I

OUT

= 10mA, excluding ESR of

external capacitor

50 mV

Load Regulation

OUT

= 10mA, excluding ESR of external

capacitor

15 20

mV/mA

REG Input Voltage Range Internal linear regulator disabled 1.6 1.8 V

REG Input Current Linear regulator off, charge pump off 3 nA

CPOUT Input Voltage Range Charge pump disabled 1.8 3.6 V

CPOUT Input Leakage Current Charge pump disabled 2 nA

SIGNAL-DETECT COMPARATOR

TSEL[2:0] = 0 hex 0

TSEL[2:0] = 4 hex 50

TSEL[2:0] = 5 hex

TSEL[2:0] = 6 hex

Differential Input-Detection Threshold Voltage

TSEL[2:0] = 7 hex

Differential Input-Detection Threshold Error

Common-Mode Input Voltage Range

Turn-On Time 50 µs

VOLTAGE MONITORS

Monitor Supply Voltage

Range

For valid reset 1.0 3.6 V

A grade

Trip Threshold (DVDD Falling)

B grade

DVDD Monitor Timeout Reset Period

1.5 s

HYSE bit set to logic 1

DVDD Monitor Hysteresis

HYSE bit set to logic 0 35

SYMBOL

MIN TYP MAX

AGND AV

1.80 1.85 1.90

1.80 1.85 1.95

100

150

200

±10

200

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

8 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

DVDD Monitor Turn-On Time 5ms

CPOUT Monitor Supply Voltage Range

1.0 3.6 V

CPOUT Monitor Trip Threshold 2.7 2.8 2.9 V

CPOUT Monitor Hysteresis 35 mV

CPOUT Monitor Turn-On Time 5ms

Internal Power-On Reset Voltage

1.7 V

32kHz Oscillator (32KIN, 32KOUT)

Clock Frequency DVDD = 2.7V

kHz

Stability DVDD = 1.8V to 3.6V, excluding crystal 25

ppm

Oscillator Startup Time

Crystal Load Capacitance 6pF

LOW-FREQUENCY CLOCK INPUT/OUTPUT (CLK32K)

Output Clock Frequency

kHz

Absolute Input to Output Clock Jitter

Cycle to cycle 5 ns

Input to Output Rise/Fall Time 10% to 90%, 30pF load 5 ns

Input/Output Duty Cycle 40 60 %

HIGH-FREQUENCY CLOCK OUTPUT (CLK)

OUT

= f

FLL

OUT

= f

FLL

/ 2, power-up default

OUT

= f

FLL

/ 4

MHz

FLL Output Clock Frequency

OUT

= f

FLL

/ 8

kHz

Cycle to cycle, FLL off

Absolute Clock Jitter

Cycle to cycle, FLL on 1

Rise and Fall Time tR/t

10% to 90%, 30pF load 10 ns

OUT

= 4.9152MHz 40 60

Duty Cycle

OUT

= 2.4576MHz, 1.2288MHz, 614.4kHz 45 55

Uncalibrated CLK Frequency Error

FLL calibration not performed ±35 %

DIGITAL INPUTS (SCLK, DIN, CS, UPIO_, CLK32K)

Input High Voltage V

0.7 x V

Input Low Voltage V

0.3 x V

SYMBOL

MIN TYP MAX

32.768

1500

32.768

4.8660 4.9152 4.9644

2.4330 2.4576 2.4822

1.2165 1.2288 1.2411

608.25 614.4 620.54

0.15

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

_______________________________________________________________________________________ 9

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

DVDD supply voltage

0.7 x

UPIO_ Input High Voltage

CPOUT supply voltage

0.7 x

DVDD supply voltage

0.3 x

UPIO_ Input Low Voltage

CPOUT supply voltage

0.3 x

Input Hysteresis V

HYS

DVDD = 3.0V

Input Current I

VIN = DGND or DVDD (Note 7)

Input Capacitance VIN = DGND or DV

10 pF

VIN = DVDD or CPOUT, pullup enabled

UPIO_ Input Current

= DVDD or CPOUT or 0V,

pullup disabled

µA

UPIO_ Pullup Current

= 0V, pullup enabled, floating UPIO

inputs are pulled up to DV

or CPOUT

with pullup enabled

0.5 2 5 µA

DIGITAL OUTPUTS (DOUT, RESET, UPIO_, CLK32K, INT, CLK)

Output Low Voltage V

SINK

= 1mA 0.4 V

Output High Voltage V

SOURCE

= 500µA

0.8 x V

±1µA

DOUT Tri-State Output Capacitance

OUT

15 pF

RESET Output Low Voltage V

SINK

= 1mA 0.4 V

RESET Output Leakage Current Open-drain output, RESET deasserted 0.1 µA

SINK

= 1mA, UPIO_ referenced to DV

0.4

UPIO_ Output Low Voltage V

SINK

= 4mA, UPIO_ referenced to CPOUT 0.4

SOURCE

= 500µA, UPIO_ referenced to

0.8 x

UPIO_ Output High Voltage V

SOURCE

= 4mA, UPIO_ referenced to

CPOUT

C P OU T

POWER REQUIREMENT

Analog Supply Voltage Range AV

1.8 3.6 V

Digital Supply Voltage Range DV

1.8 3.6 V

SYMBOL

MIN TYP MAX

CPOUT

200

±0.01 ±100

±0.01

DOUT Tri-State Leakage Current

±0.01

- 0.4

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

10 ______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DVDD= +1.8V to +3.6V, V

REF

= +1.25V, external reference, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

10µF, 10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

2.0

MAX

Everything on, charge pump unloaded, max internal temp-sensor current, clock output buffers unloaded, ADC at 512sps

1.7

Total Supply Current

All on except charge pump and temp sensor, ADC at 512sps, CLK output buffer enabled, clock output buffers unloaded

1.3

6.5

Sleep-Mode Supply Current I

SLEEP

TA = +25°C

8.3

µA

Shutdown Supply Current I

SHDN

All off

= +25°C 1.6

µA

Note 1: Devices are production tested at TA= +25°C and TA= +85°C. Specifications to TA= -40°C are guaranteed by design. Note 2: Guaranteed by design or characterization. Note 3: The offset and gain errors are corrected by self-calibration. The calibration process requires measurement to be made at

the selected data rate. The calibration error is therefore in the order of peak-to-peak noise for the selected rate.

Note 4: Eliminate drift errors by recalibration at the new temperature. Note 5: The gain error excludes reference error, offset error (unipolar), and zero error (bipolar). Note 6: Gain-error drift does not include unipolar offset drift or bipolar zero-error drift. It is effectively the drift of the part if zero-

scale error is removed.

Note 7: These specs are obtained from characterization during design or from initial product evaluation. Not production tested or

guaranteed.

Note 8: OUTA/B = +0.5V or +1.5V, SWA/B = +1.5V or +0.5V, T

= 0°C to +50°C.

Note 9: Long-term stability is characterized using five to six parts. The bandgaps are turned on for 1000hrs at room temperature

with the parts running continuously. Daily measurements are taken and any obvious outlying data points are discarded.

Note 10: All of the stated temperature accuracies assume that 1) the external diode characteristic is precisely known (i.e., ideal)

and 2) the ADC reference voltage is exactly equal to 1.25V. Any variations to this known reference characteristic and voltage caused by temperature, loading, or power supply results in errors in the temperature measurement. The actual temperature calculation is performed externally by the microcontroller (µC).

Note 11: Values based on simulation results and are not production tested or guaranteed.

AVDD = DVDD = 3.6V 1.36

AVDD = DVDD = 3.3V 1.15

NORMAL

TA = -45°C to +85°C

AVDD = DVDD = 3.0V 5.18

= DVDD = 3.6V 6.15

AVDD = DVDD = 3.0V 4.42 5.19

AVDD = DVDD = 3.6V 5.56

TA = -40°C to +85°C

1.17

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 11

OUTPUT NOISE (µV

RMS

)

RATE (sps)

GAIN = 1 GAIN = 2 GAIN = 4 GAIN = 8

10 1.820 3.286 1.345 0.660

40 3.845 3.257 1.928 0.630

50 3.065 2.317 1.631 0.625

60 2.873 2.662 1.519 0.728

200 4.525 2.910 1.397 0.519

240 6.502 2.954 1.596 0.629

400 5.300 80.068 1.686 0.436

512 119.078 282.959 281.056 28.470

Table 1. Output Noise (Notes 12, 13, and 14)

Note 12: V

REF

= ±1.25V, bipolar mode, VIN= 1.24912, PGA gain = 1, TA= +85°C.

Note 13: C

= 5pF, op-amp noise is considered to be the same as the switching noise. The increase of the op amp’s noise contri-

bution is due to large input swing (0 to 3.6V).

Note 14: Assume ±3 sigma peak-to-peak variation; noise-free resolution means no code flicker at given bits’ LSB.

PEAK-TO-PEAK RESOLUTION (Bits)

RATE (sps)

GAIN = 1 GAIN = 2 GAIN = 4 GAIN = 8

10 16.7 14.8 15.1 15.1

40 15.6 14.8 14.6 15.2

50 15.9 15.3 14.8 15.2

60 16.0 15.1 14.9 15.0

200 15.4 15.0 15.0 15.5

240 14.8 15.0 14.9 15.2

400 15.1 10.2 14.8 15.7

512 10.6 8.4 7.4 9.7

Table 2. Peak-to-Peak Resolution

EXTERNAL CAPACITANCE (pF)

PARAMETER

0 (Note 15) 50 100 500 1000 5000

Resistance (kΩ) 350 60 30 10 4 1

Table 3. Maximum External Source Impedance Without 16-Bit Gain Error

Note 15: 2pF parasitic capacitance is assumed, which represents pad and any other parasitic capacitance.

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

12 ______________________________________________________________________________________

TIMING CHARACTERISTICS (Figures 1 and 21)

(AV

= DVDD= +1.8V to +3.6V, external V

REF

= +1.25V, CLK32K = 32.768kHz (external clock), C

REG

= 10µF, C

CPOUT

= 10µF,

10µF between CF+ and CF-, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

SCLK Operating Frequency f

SCLK

010

MHz

SCLK Cycle Time t

CYC

SCLK Pulse-Width High t

40 ns

SCLK Pulse-Width Low t

40 ns

DIN to SCLK Setup t

30 ns

DIN to SCLK Hold t

0ns

SCLK Fall to DOUT Valid t

CL = 50pF, Figure 2 40 ns

CS Fall to Output Enable t

CL = 50pF, Figure 2 48 ns

CS Rise to DOUT Disable t

CL = 50pF, Figure 2 48 ns

CS to SCLK Rise Setup t

CSS

20 ns

CS to SCLK Rise Hold t

CSH

0ns

DVDD Monitor Timeout Period

DSLP

(Note 16) 1.5 s

Wake-Up (WU) Pulse Width

Minimum pulse width required to detect a wake-up event

1µs

Shutdown Delay

DPU

The delay for SHDN to go high after a valid wake-up event

1µs

The turn-on time for the high-frequency clock and FLL (FLLE = 1) (Note 17)

10 ms

HFCK Turn-On Time

DFON

If FLLE = 0, the turn-on time for the highfrequency clock (Note 18)

10 µs

CRDY to INT Delay

DFI

The delay for CRDY to go low after the HFCK clock output has been enabled (Note 19)

HFCK Disable Delay

DFOF

The delay after a shutdown command has asserted and before HFCK is disabled (Note 20)

SHDN Assertion Delay

DPD

(Note 21)

Note 16: The delay for the sleep voltage monitor output, RESET, to go high after VDDrises above the reset threshold. This is largely

driven by the startup of the 32kHz oscillator.

Note 17: It is gated by an AND function with three inputs—the external RESET signal, the internal DV

monitor output, and the

external SHDN signal. The time delay is timed from the internal LOV

going high or the external RESET going high,

whichever happens later. HFCK always starts in the low state.

Note 18: If FLLE = 0, the internal signal CRDY is not generated by the FLL block and INT or INT are deasserted. Note 19: CRDY is used as an interrupt signal to inform the µC that the high-frequency clock has started. Only valid if FLLE = 1. Note 20:

DFOF

gives the µC time to clean up and go into sleep-override mode properly.

Note 21:

DPD

is greater than the HFCK delay for the MAX1358/MAX1359/MAX1360 chip to clean up before losing power.

SYMBOL

MIN TYP MAX

100

7.82

1.95

2.93

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 13

CSS

SCLK

DIN

DOUT

CSH

CYC

CSH

Figure 1. Detailed Serial-Interface Timing

LOAD

= 50pF

6kΩ

DOUT

a) FOR ENABLE, HIGH IMPEDANCE TO V

AND VOL TO V

FOR DISABLE, VOH TO HIGH IMPEDANCE

b) FOR ENABLE, HIGH IMPEDANCE TO V

AND VOH TO V

FOR DISABLE, VOL TO HIGH IMPEDANCE

DOUT

6kΩ

LOAD

= 50pF

Figure 2. DOUT Enable and Disable Time Load Circuits

Typical Operating Characteristics

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

200

300

500

400

600

700

1.8 2.42.1 2.7 3.0 3.3 3.6

DVDD SUPPLY CURRENT

vs. DV

SUPPLY VOLTAGE

MAX1358/59/60 toc01

DVDD (V)

SUPPLY CURRENT (µA)

NORMAL MODE CLK BUFFER DISABLED

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

1.8 2.42.1 2.7 3.0 3.3 3.6

MAX1358/59/60 toc02

DVDD (V)

SUPPLY CURRENT (µA)

DVDD SUPPLY CURRENT

vs. DV

SUPPLY VOLTAGE

SLEEP MODE, CLK BUFFER DISABLED 32kHz OSC, RTC, DV

MONITOR ENABLED

0.2

0.6

0.4

0.8

1.0

1.8 2.42.1 2.7 3.0 3.3 3.6

MAX1358/59/60 toc03

DVDD (V)

SUPPLY CURRENT (µA)

DVDD SUPPLY CURRENT

vs. DV

SUPPLY VOLTAGE

SLEEP MODE, ALL FUNCTIONS DISABLED

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

14 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

DVDD SUPPLY CURRENT

vs. TEMPERATURE

MAX1358/59/60 toc04

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

300

400

500

600

700

200

-40 85

DVDD = 3.0V

NORMAL MODE CLK BUFFER DISABLED

DVDD = 1.8V

1.0

0.5

2.0

1.5

2.5

3.0

-40 10-15 35 60 85

MAX1358/59/60 toc05

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

DVDD SUPPLY CURRENT

vs. TEMPERATURE

SLEEP MODE, CLK BUFFER DISABLED 32kHz OSC, RTC, DV

MONITOR ENABLED

DVDD = 3.0V

DVDD = 1.8V

DVDD SUPPLY CURRENT

vs. TEMPERATURE

MAX1358/59/60 toc06

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

0.2

0.4

0.6

0.8

1.0

-40 85

DVDD = 3.0V

SLEEP MODE, ALL FUNCTIONS DISABLED

DVDD = 1.8V

250

275

300

325

350

375

400

425

450

1.8 2.42.1 2.7 3.0 3.3 3.6

MAX1358/59/60 toc07

AVDD (V)

SUPPLY CURRENT (µA)

AVDD SUPPLY CURRENT

vs. AV

SUPPLY VOLTAGE

NORMAL MODE

1.5

2.0

3.0

2.5

3.5

4.0

1.8 2.42.1 2.7 3.0 3.3 3.6

AVDD SUPPLY CURRENT

vs. AV

SUPPLY VOLTAGE

MAX1358/59/60 toc08

AVDD (V)

SUPPLY CURRENT (µA)

SLEEP MODE, 32kHz OSC, RTC, DV

MONITOR ENABLED

1.0

1.2

1.6

1.4

1.8

2.0

1.8 2.42.1 2.7 3.0 3.3 3.6

AVDD SUPPLY CURRENT

vs. AV

SUPPLY VOLTAGE

MAX1358/59/60 toc09

AVDD (V)

SUPPLY CURRENT (µA)

SLEEP MODE, ALL FUNCTIONS DISABLED

200

225

250

275

300

325

350

375

400

-40 -15 10 35 60 85

MAX1358/59/60 toc10

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

NORMAL MODE

AVDD SUPPLY CURRENT

vs. TEMPERATURE

AVDD = 3.0V

AVDD = 1.8V

1.0

2.0

1.5

3.0

2.5

3.5

4.0

-40 10-15 35 60 85

MAX1358/59/60 toc11

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

AVDD SUPPLY CURRENT

vs. TEMPERATURE

AVDD = 3.0V

AVDD = 1.8V

SLEEP MODE, 32kHz OSC, RTC, DV

MONITOR ENABLED

AVDD SUPPLY CURRENT

vs. TEMPERATURE

MAX1358/59/60 toc12

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

1.2

1.4

1.6

1.8

2.0

1.0

-40 85

AVDD = 3.0V

SLEEP MODE, ALL FUNCTIONS DISABLED

AVDD = 1.8V

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 15

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

2.1

2.3

2.2

2.5

2.4

2.7

2.6

2.8

-40 10-15 35 60 85

INTERNAL OSCILLATOR FREQUENCY

vs. TEMPERATURE

MAX1358/59/60 toc13

TEMPERATURE (°C)

INTERNAL OSCILLATOR FREQUENCY (MHz)

A: FLL DISABLED; AVDD, DVDD = 1.8V B: FLL ENABLED C: FLL DISABLED; AV

, DVDD = 3.0V

CLK = 2.4576MHz

2.20

2.25

2.30

2.35

2.40

2.45

2.50

2.55

2.60

1.8 2.42.1 2.7 3.0 3.3 3.6

INTERNAL OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

MAX1358/59/60 toc14

AVDD, DVDD (V)

INTERNAL OSCILLATOR FREQUENCY (MHz)

FLL ENABLED

CLK = 2.4576MHz

FLL DISABLED

3.0

2.5

2.0

1.5

1.0

1.8 2.72.1 2.4 3.0 3.3 3.6

REFERENCE OUTPUT VOLTAGE

vs. SUPPLY VOLTAGE

MAX1358/59/60 toc15

AVDD (V)

REFERENCE OUTPUT VOLTAGE (V)

A: V

REF

= 1.25V

B: V

REF

= 2.048V

C: V

REF

= 2.5V

1.2510

1.2505

1.2500

1.2495

1.2490

-50 25050 150 350 450

REFERENCE OUTPUT VOLTAGE

vs. OUTPUT CURRENT

MAX1358/59/60 toc16

OUTPUT CURRENT (µA)

REF

(V)

AVDD = 1.8V V

REF

= 1.25V

2.0472

2.0476

2.0474

2.0480

2.0478

2.0484

2.0482

2.0486

REFERENCE OUTPUT VOLTAGE

vs. OUTPUT CURRENT

MAX1358/59/60 toc17

REF

(V)

AVDD = 2.5V V

REF

= 2.048V

-50 25050 150 350 450

OUTPUT CURRENT (µA)

2.5030

2.5036

2.5034

2.5032

2.5038

2.5040

2.5042

2.5044

2.5046

2.5048

2.5050

MAX1358/59/60 toc18

REF

(V)

-50 25050 150 350 450

OUTPUT CURRENT (µA)

AVDD = 3.0V V

REF

= 2.5V

REFERENCE OUTPUT VOLTAGE

vs. OUTPUT CURRENT

0.9970

0.9975

0.9980

0.9985

0.9990

0.9995

1.0000

1.0005

1.0010

-40 -15 10 35 60 85

NORMALIZED REFERENCE OUTPUT

VOLTAGE vs. TEMPERATURE

MAX1358/59/60 toc19

TEMPERATURE (°C)

NORMALIZED REFERENCE VOLTAGE (V)

REF

= 1.25V

0.9970

0.9975

0.9980

0.9985

0.9990

0.9995

1.0000

1.0005

1.0010

-40 -15 10 35 60 85

NORMALIZED REFERENCE OUTPUT

VOLTAGE vs. TEMPERATURE

MAX1358/59/60 toc20

TEMPERATURE (°C)

NORMALIZED REFERENCE VOLTAGE (V)

REF

= 2.048V

0.9970

0.9975

0.9980

0.9985

0.9990

0.9995

1.0000

1.0005

1.0010

-40 -15 10 35 60 85

NORMALIZED REFERENCE OUTPUT

VOLTAGE vs. TEMPERATURE

MAX1358/59/60 toc21

TEMPERATURE (°C)

NORMALIZED REFERENCE VOLTAGE (V)

REF

= 2.5V

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

16 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

1s/div

REFERENCE VOLTAGE OUTPUT NOISE

(0.1Hz TO 10Hz)

50µV/div

MAX1358/59/60 toc22

REF

= +1.25V

= +1.8V

REFERENCE VOLTAGE OUTPUT

NOISE vs. FREQUENCY

MAX1358/59/60 toc23

FREQUENCY (Hz)

1k10010

1000

10k

10,000

100

REF

= 1.25V

NOISE (nV/√Hz)

REFERENCE VOLTAGE OUTPUT

NOISE vs. FREQUENCY

MAX1358/59/60 toc24

FREQUENCY (Hz)

1k10010

1000

10k

10,000

100

REF

= 2.048V

NOISE (nV/√Hz)

REFERENCE VOLTAGE OUTPUT

NOISE vs. FREQUENCY

MAX1358/59/60 toc25

FREQUENCY (Hz)

1k10010

1000

10k

10,000

100

REF

= 2.5V

NOISE (nV/√Hz)

-12

-8

-10

-4

-6

-2

-40 10-15 35 60 85

ADC MUX INPUT DC CURRENT

vs. TEMPERATURE

MAX1358/59/60 toc26

TEMPERATURE (°C)

INPUT CURRENT (µA)

AVDD = 1.8V V

AIN

= 0.5V

-0.25

-0.15

0.05

-0.05

0.15

0.25

0400200 600 800 1000

DAC INL vs. OUTPUT CODE

MAX1358/59/60 toc27

OUTPUT CODE

INL (LSB)

AVDD = 1.8V V

REF

= 1.25V

-0.25

-0.15

0.05

-0.05

0.15

0.25

0 400200 600 800 1000

DAC INL vs. OUTPUT CODE

MAX1358/59/60 toc28

OUTPUT CODE

INL (LSB)

AVDD = 2.5V V

REF

= 2.048V

-0.25

-0.15

0.05

-0.05

0.15

0.25

0 400200 600 800 1000

DAC INL vs. OUTPUT CODE

MAX1358/59/60 toc29

OUTPUT CODE

INL (LSB)

AVDD = 3.0V V

REF

= 2.5V

-0.20

-0.15

-0.10

-0.05

0.05

0.10

0.15

0.20

0400200 600 800 1000

DAC DNL vs. OUTPUT CODE

MAX1358/59/60 toc30

OUTPUT CODE

DNL (LSB)

AVDD = 1.8V V

REF

= 1.25V

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 17

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

-0.20

-0.15

-0.10

-0.05

0.05

0.10

0.15

0.20

0 400200 600 800 1000

DAC DNL vs. OUTPUT CODE

MAX1358/59/60 toc31

OUTPUT CODE

DNL (LSB)

AVDD = 2.5V V

REF

= 2.048V

-0.20

-0.15

-0.10

-0.05

0.05

0.10

0.15

0.20

0400200 600 800 1000

DAC DNL vs. OUTPUT CODE

MAX1358/59/60 toc32

OUTPUT CODE

DNL (LSB)

AVDD = 3.0V V

REF

= 2.5V

1.240

1.242

1.244

1.246

1.248

00.501.00 1.500.25 0.75 1.25 1.75 2.00

DAC OUTPUT VOLTAGE

vs. OUTPUT SOURCE CURRENT

MAX1358/59/60 toc33

SOURCE CURRENT (mA)

DAC OUTPUT VOLTAGE (V)

CODE = 3FF hex AV

= 1.8V, 3.0V

0.05

0.10

0.15

0.20

0.25

0.30

DAC OUTPUT VOLTAGE

vs. OUTPUT SINK CURRENT

MAX1358/59/60 toc34

DAC OUTPUT VOLTAGE (V)

00.501.00 1.500.25 0.75 1.25 1.75 2.00 SOURCE CURRENT (mA)

CODE = 020 hex

AVDD = 1.8V

AVDD = 3.0V

650

640

630

610

600

1.8 2.72.1 2.4 3.0 3.3 3.6

DAC OUTPUT VOLTAGE

vs. ANALOG SUPPLY VOLTAGE

MAX1358/59/60 toc35

AVDD (V)

DAC OUTPUT VOLTAGE (mV)

CODE = 200 hex

620

622

626

624

628

630

-40 10-15 35 60 85

DAC OUTPUT VOLTAGE

vs. TEMPERATURE

MAX1358/59/60 toc36

TEMPERATURE (°C)

DAC OUTPUT VOLTAGE (mV)

AVDD = 3.0V

AVDD = 1.8V

REF

= 1.25V

CODE = 200 hex

-5

-3

-4

-1

-2

-40 10-15 35 60 85

DAC FBA/B INPUT BIAS CURRENT

vs. TEMPERATURE

MAX1358/59/60 toc37

TEMPERATURE (°C)

INPUT BIAS CURRENT (µA)

AVDD = 1.8V V

AIN

= 0.5V

1s/div

DAC OUTPUT NOISE

(0.1Hz TO 10Hz)

50µV/div

MAX1358/59/60 toc38

AVDD = +1.8V V

REF

= +1.25V

DAC CODE = 3FF hex

DAC OUTPUT

NOISE vs. FREQUENCY

MAX1358/59/60 toc39

FREQUENCY (Hz)

1k10010

1000

10k

10,000

100

DAC CODE = 3FF hex V

REF

= 2.5V

NOISE (nV/√Hz)

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

18 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

40µs/div

DAC LARGE-SIGNAL OUTPUT

STEP RESPONSE

MAX1358/59/60 toc40

REF

= +1.25V

= +3.0V

2V/div

OUT_ 1V/div

OP-AMP INPUT OFFSET VOLTAGE

vs. TEMPERATURE

MAX1358/59/60 toc41

TEMPERATURE (°C)

INPUT OFFSET VOLTAGE (mV)

603510-15

6.3

6.6

6.9

7.2

7.5

6.0

-40 85

AVDD = 1.8V

VCM = 0.5V

AVDD = 3.0V

-40 10-15 35 6085

MAX1358/59/60 toc42

TEMPERATURE (°C)

INPUT BIAS CURRENT (pA)

OP-AMP INPUT BIAS CURRENT

vs. TEMPERATURE

AVDD = 1.8V V

= 0.5V

-2

-40 -15 10 35 60 85

MAX1358/59/60 toc43

TEMPERATURE (°C)

INPUT BIAS CURRENT (pA)

OP-AMP INPUT BIAS CURRENT

vs. TEMPERATURE

AVDD = 3.0V V

= 0.5V

150

100

200

250

00.500.750.25 1.00 1.25 1.50 1.75 2.00

OP-AMP OUTPUT VOLTAGE

vs. OUTPUT SINK CURRENT

MAX1358/59/60 toc44

SINK CURRENT (mA)

OUTPUT VOLTAGE (mV)

UNITY GAIN, V

IN_

+ = 0V

AVDD = 1.8V

AVDD = 3.0V

2.80

2.84

2.92

2.88

2.96

3.00

00.500.750.25 1.00 1.25 1.50 1.75 2.00

OP-AMP OUTPUT VOLTAGE

vs. OUTPUT SOURCE CURRENT

MAX1358/59/60 toc45

SOURCE CURRENT (mA)

OUTPUT VOLTAGE (V)

AVDD = 3.0V UNITY GAIN, V

IN_

+ = AV

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 19

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

1.8 2.72.1 2.4 3.0 3.3 3.6

OP-AMP OUTPUT VOLTAGE

vs. AV

SUPPLY VOLTAGE

MAX1358/59/60 toc48

AVDD (V)

OUTPUT VOLTAGE (mV)

500.2

500.4

500.6

500.8

501.0

500.0

UNITY GAIN, V

IN_

+ = 0.5V

= 10k

Ω

MAX1358/59/60 toc49

FREQUENCY (Hz)

1k10010

1000

10k

10,000

100

NOISE (nV/√Hz)

OP-AMP OUTPUT NOISE

vs. FREQUENCY

UNITY GAIN, V

IN_

+ = 0.5V

0 1.00.5 1.5 2.0 2.5 3.0

SPDT ON-RESISTANCE

vs. V

COM

VOLTAGE

MAX1358/59/60 toc50

COM

(V)

(Ω)

AVDD = 3.0V

AVDD = 1.8V

110

130

150

01.00.5 1.5 2.0 2.5 3.0

SPST ON-RESISTANCE

vs. V

COM

VOLTAGE

MAX1358/59/60 toc51

COM

(V)

(Ω)

AVDD = 3.0V

AVDD = 1.8V

1.60

1.65

1.70

1.75

1.80

OP-AMP OUTPUT VOLTAGE

vs. OUTPUT SOURCE CURRENT

MAX1358/59/60 toc46

OUTPUT VOLTAGE (V)

UNITY GAIN, V

IN_

+ = AV

= 1.8V

00.500.750.25 1.00 1.25 1.50 1.75 2.00 SOURCE CURRENT (mA)

OP-AMP OUTPUT VOLTAGE

vs. TEMPERATURE

MAX1358/59/60 toc47

TEMPERATURE (°C)

OUTPUT VOLTAGE (mV)

603510-15

500.2

500.4

500.6

500.8

501.0

500.0

-40 85

AVDD = 1.8V

AVDD = 3.0V

UNITY GAIN, V

IN_

+ = 0.5V

= 10k

Ω

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

20 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

SPDT ON-RESISTANCE

vs. TEMPERATURE

MAX1358/59/60 toc52

TEMPERATURE (°C)

(Ω)

603510-15

-40 85

AVDD = 3.0V

COM

= 1mA

AVDD = 1.8V

100

-40 10-15 35 60 85

MAX1358/59/60 toc53

TEMPERATURE (°C)

(Ω)

SPST ON-RESISTANCE

vs. TEMPERATURE

AVDD = 1.8V, 3.0V I

COM

= 1mA

SPDT/SPST ON/OFF-LEAKAGE

CURRENT vs. TEMPERATURE

MAX1358/59/60 toc54

TEMPERATURE (°C)

LEAKAGE CURRENT (pA)

603510-15

100

0.1

-40 85

ON-LEAKAGE

OFF-LEAKAGE

AVDD = 1.8V V

= 0V

1.8 2.4 2.72.1 3.0 3.3 3.6

SPDT/SPST SWITCHING TIME

vs. AV

SUPPLY VOLTAGE

MAX1358/59/60 toc55

AVDD (V)

SWITCHING TIMES (ns)

OFF

SPDT/SPST SWITCHING TIME

vs. TEMPERATURE

MAX1358/59/60 toc56

TEMPERATURE (°C)

SWITCHING TIMES (ns)

603510-15

-40 85

AVDD = 1.8V

OFF

SPDT/SPST SWITCHING TIME

vs. TEMPERATURE

MAX1358/59/60 toc57

TEMPERATURE (°C)

SWITCHING TIMES (ns)

603510-15

-40 85

AVDD = 3.0V

OFF

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 21

Typical Operating Characteristics (continued)

(DVDD= AV

= 1.8V, REF = +1.25V C

CPOUT

= 10µF, TA= +25°C, unless otherwise noted.)

20µs/div

CHARGE-PUMP OUTPUT

VOLTAGE RIPPLE

MAX1358/59/60 toc63

DVDD = +1.8V I

LOAD

= 10mA

CPOUT 20mV/div AC-COUPLED

-0.20

-0.10

-0.15

-0.05

0.05

0.10

-40 10-15 35 6085

MAX1358/59/60 toc58

TEMPERATURE (°C)

% DEVIATION

VOLTAGE SUPERVISOR THRESHOLD

vs. TEMPERATURE

DVDD SUPERVISOR

CPOUT SUPERVISOR

3.0

3.2

3.1

3.4

3.3

3.5

3.6

0426810

CHARGE-PUMP OUTPUT VOLTAGE

vs. OUTPUT CURRENT

MAX1358/59/60 toc59

OUTPUT CURRENT (mA)

CPOUT VOLTAGE (V)

DVDD = 1.8V

3.10

3.14

3.22

3.18

3.26

3.30

-40 10-15 35 60 85

CHARGE-PUMP OUTPUT VOLTAGE

vs. TEMPERATURE

MAX1358/59/60 toc60

TEMPERATURE (°C)

CPOUT VOLTAGE (V)

DVDD = 3.0V

DVDD = 1.8V

OUT

= 10mA

100

084121620

CHARGE-PUMP OUTPUT RESISTANCE

vs. CAPACITANCE

MAX1358/59/60 toc61

CF (µF)

OUTPUT RESISTANCE (Ω)

DVDD = 1.8V I

OUT

= 10mA

0426810

CHARGE-PUMP OUTPUT VOLTAGE

RIPPLE vs. OUTPUT CURRENT

MAX1358/59/60 toc62

OUTPUT CURRENT (mA)

OUTPUT VOLTAGE RIPPLE (mV)

DVDD = 1.8V

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

22 ______________________________________________________________________________________

MAX1358

NAME FUNCTION

111CLK Clock Output. Default is 2.457MHz output clock for µC.

222UPIO2

User-Programmable Input/Output 2. See the UPIO2_CTRL Register section for functionality.

333UPIO3

User-Programmable Input/Output 3. See the UPIO3_CTRL Register section for functionality.

444UPIO4

User-Programmable Input/Output 4. See the UPIO4_CTRL Register section for functionality.

555DOUT

Serial-Data Output. Data is clocked out on SCLK’s falling edge. High impedance when CS is high, when UPIO/SPI passthrough mode is enabled, DOUT mirrors the state of UPIO1.

666SCLK Serial-Clock Input. Clocks data in and out of the serial interface.

777DIN Serial-Data Input. Data is clocked in on SCLK’s rising edge.

888CS

Active-Low Chip-Select Input. Data is not clocked into DIN unless CS is low. When CS is high, DOUT is high impedance. High impedance when CS is high, when UPIO/SPI passthrough mode is enabled, DOUT mirrors the state of UPIO1.

999INT

Programmable Active-High/Low Interrupt Output. ADC, UPIO wake-up, alarm, and voltage-monitor events.

10 10 10

32kHz Clock Input/Output. Outputs 32kHz clock for µC. Can be programmed as an input by enabling the IO32E bit to accept an external 32kHz input clock. The RTC, PWM, and watchdog timer always use the internal 32kHz clock derived from the 32kHz crystal.

11 11 11

Active-Low Open-Drain Reset Output. Remains low while DVDD is below the 1.8V voltage threshold and stays low for a timeout period (t

DSLP

) after DVDD rises above

the 1.8V threshold. RESET also pulses low when the watchdog timer times out and holds low during POR until the 32kHz oscillator stabilizes.

12 12 12

32kHz Crystal Output. Connect external 32kHz watch crystal between 32KIN and 32KOUT.

13 13 13 32KIN

32kHz Crystal Input. Connect external 32kHz watch crystal between 32KIN and 32KOUT.

14 14 14 SNO1 Analog Switch 1 Normally Open Terminal. Analog input to mux.

15 15 15 SCM1 Analog Switch 1 Common Terminal. Analog input to mux.

16 16 16 SNC1 Analog Switch 1 Normally Closed Terminal. Analog input to mux (open on POR).

17 17 17 SNO2 Analog Switch 2 Normally Open Terminal. Analog input to mux.

18 18 18 SCM2 Analog Switch 2 Common Terminal. Analog input to mux (open on POR).

19 19 19 SNC2 Analog Switch 2 Normally Closed Terminal. Analog input to mux.

20 20 20 OUT1 Amplifier 1 Output. Analog input to mux.

21 21 21 IN1- Amplifier 1 Inverting Input. Analog input to mux.

22 22 22 IN1+ Amplifier 1 Noninverting Input

23 23 — SWA DACA SPST Shunt Switch Input. Connects to OUTA through a SPST switch.

24 24 — FBA DACA Force-Sense Feedback Input. Analog input to mux.

Pin Description

MAX1359 MAX1360

CLK32K

RESET

32KOUT

MAX1358/MAX1359/MAX1360

16-Bit Data-Acquisition Systems with ADC, DACs,

UPIOs, RTC, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 23

MAX1358

NAME FUNCTION

25 25 — OUTA DACA Force-Sense Output. Analog input to mux.

26 26 26 AGND Analog Ground

27 27 27 AV

Analog Supply Voltage. Also ADC reference voltage during AVDD measurement. Bypass to AGND with 10µF and 0.1µF capacitors in parallel as close to the pin as possible.

28 — — SWB DACB SPST Shunt Switch Input. Connects to OUTB through an SPST switch.

29 — — FBB DACB Force-Sense Feedback Input. Analog input to mux.

30 — — OUTB Force-Sense DACB Ouput. Analog input to mux.

31 31 31 AIN2

Analog Input 2. Analog input to mux. Inputs have internal programmable current source for external temperature measurement.

32 32 32 AIN1

Analog Input 1. Analog input to mux. Inputs have internal programmable current source for external temperature measurement.

33 33 33 REF

Reference Input/Output. Output of the reference buffer amplifier or external reference input. Disabled at power-up to allow external reference. Reference voltage for ADC and DACs.

34 34 34 REG

Linear Voltage-Regulator Output. Charge-pump-doubler input voltage. Bypass REG with a 10µF capacitor to DGND for charge-pump regulation.

35 35 35 CF-

36 36 36 CF+

Charge-Pump Flying Capacitor Terminals. Connect an external 10µF (typ) capacitor between CF+ and CF-.

37 37 37

C har g e- P um p Outp ut. C onnect an exter nal 10µF ( typ ) r eser voi r cap aci tor b etw een C P OU T and D G N D . Ther e i s a l ow thr eshol d d i od e b etw een D V

D D

and C P OU T. When

the char g e p um p i s d i sab l ed , C P OU T i s p ul l ed up w i thi n 300m V ( typ ) of D V

D D

38 38 38 DV

Digital Supply Voltage. Bypass to DGND with 10µF and 0.1µF capacitors in parallel as close to the pin as possible.

39 39 39 DGND

Digital Ground. Also ground for cascaded linear voltage regulator and chargepump doubler.

40 40 40 UPIO1 U ser - P r og r am m ab l e Inp ut/O utp ut 1. S ee the U P IO1_C TRL Reg i ster for functionality.

——23IN3+ Amplifier 3 Noninverting Input

——24IN3- Amplifier 3 Inverting Input. Analog input to mux.

——25OUT3 Amplifier 3 Output. Analog input to mux.

—2828IN2+ Amplifier 2 Noninverting Input

—2929IN2- Amplifier 2 Inverting Input. Analog input to mux.

—3030OUT2 Amplifier 2 Output. Analog input to mux.

———EPE xp osed P ad . Leave unconnected or connect to AGN D .

Pin Description (continued)

MAX1359 MAX1360

CPOUT

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