MAXIM MAX1065, MAX1066 Technical data

General Description

The MAX1065/MAX1066 14-bit, low-power successive approximation analog-to-digital converters (ADCs) feature automatic power-down, a factory-trimmed internal clock, and a high-speed, 14-bit-wide (MAX1065) or byte-wide (MAX1066) parallel interface. The devices operate from a single 4.75V to 5.25V analog supply and a 2.7V to 5.25V digital supply.

The MAX1065/MAX1066 use an internal 4.096V reference or an external reference. The MAX1065/MAX1066 consume only 1.8mA at a sampling rate of 165ksps with external reference and 2.7mA with internal reference. AutoShutdown™ reduces supply current to 0.1mA at 10ksps.

The MAX1065/MAX1066 are ideal for high-performance, battery-powered, data-acquisition applications. Excellent dynamic performance and low-power consumption in a small package make the MAX1065/ MAX1066 the best choice for circuits with demanding power consumption and space requirements.

The 14-bit-wide MAX1065 is available in a 28-pin TSSOP package, and the byte-wide MAX1066 is available in a 20-pin TSSOP package. Both devices are available in either the 0°C to +70°C commercial, or the -40°C to +85°C extended temperature range.

Applications

Features

♦ 14-Bit-Wide (MAX1065) and Byte-Wide (MAX1066)

Parallel Interface

♦ High Speed: 165ksps Sample Rate

♦ Accurate: ±1LSB DNL (max), ±1LSB INL (max)

♦ 4.096V, 35ppm/°C Internal Reference

♦ External Reference Range 3.8V to 5.25V

♦ Single 4.75V to 5.25V Analog Supply Voltage

♦ 2.7V to 5.25V Digital Supply Voltage

♦ Low Supply Current

1.8mA (External Reference)

2.7mA (Internal Reference)

0.1mA AutoShutdown Mode (10ksps, External Reference)

♦ Small Footprint

28-Pin TSSOP Package (14-Bit Wide) 20-Pin TSSOP Package (Byte Wide)

MAX1065/MAX1066

Low-Power, 14-Bit Analog-to-Digital Converters

with Parallel Interface

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

ANALOG INPUT

D0–D13

EOC

REFADJ

REF

DGNDAGND

RESET

R/C

AIN

MAX1065

0.1µF 0.1µF

5V ANALOG 5V DIGITAL

0.1µF1µF

µP DATA

BUS

Typical Operating Circuit

19-2466; Rev 0; 4/02

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.

Pin Configurations appear at end of data sheet.

AutoShutdown is a registered trademark of Maxim Integrated Products, Inc.

PART

PIN-

INL

MAX1065ACUI 0°C to 70°C

±1

MAX1065BCUI 0°C to 70°C

±2

MAX1065CCUI 0°C to 70°C

±3

MAX1065AEUI

±1

MAX1065BEUI

±2

MAX1065CEUI

±3

MAX1066ACUP

0°C to 70°C

±1

MAX1066BCUP

0°C to 70°C

±2

MAX1066CCUP

0°C to 70°C

±3

MAX1066AEUP

±1

MAX1066BEUP

±2

MAX1066CEUP

±3

Temperature Sensor/Monitor

Industrial Process Control

I/O Boards

Data-Acquisition Systems

Cable/Harness Tester

Accelerometer Measurements

Digital Signal Processing

查询MAX1065供应商

TEMP RANGE

PACKAGE

28 TSSOP 28 TSSOP 28 TSSOP

-40°C to +85°C 28 TSSOP

-40°C to +85°C 28 TSSOP 20 TSSOP 20 TSSOP 20 TSSOP

-40°C to +85°C 20 TSSOP

MAX1065/MAX1066

Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AVDD= DVDD= 5V, external reference = 4.096V, C

REF

= 1µF, C

REFADJ

= 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted.

Typical values are at T

= +25°C.)

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 +6V

DVDDto DGND.........................................................-0.3V to +6V

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

AIN, REF, REFADJ to AGND....................-0.3V to (AVDD+ 0.3V)

CS, HBEN, R/C, RESET to DGND ............................-0.3V to +6V

Digital Output (D13–D0, EOC)

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

+ 0.3V)

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

Continuous Power Dissipation (T

= +70°C)

20-Pin TSSOP (derate 10.9mW/°C above +70°C) .......879mW

28-Pin TSSOP (derate 12.8mW/°C above +70°C) .....1026mW

Operating Temperature Ranges

MAX106_ _CU_...................................................0°C to +70°C

MAX106_ _EU_ ................................................-40°C to +85°C

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

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

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

DC ACCURACY

Resolution N 14 Bits

Differential Nonlinearity DNL No missing codes over temperature ±1 LSB

Transition Noise

Offset Error 0.2 1 mV Gain Error (Note 2) ±0.002 ±0.02 %FSR

Offset Drift 0.6 ppm/°C

Gain Drift 0.2 ppm/°C

DYNAMIC PERFORMANCE (f

Signal-to-Noise Plus Distortion SINAD 81 84 dB

Signal-to-Noise Ratio SNR 82 84 dB

Total Harmonic Distortion THD -99 -86 dB

Spurious-Free Dynamic Range SFDR 87 102 dB

Full-Power Bandwidth -3dB point 4 MHz

Full-Linear Bandwidth SINAD > 81dB 20 kHz

CONVERSION RATE

Sample Rate f

Aperture Delay 40 ns

Aperture Jitter 100 ps

ANALOG INPUT

Input Range V

Input Capacitance C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

IN(SINE-WAVE)

SAMPLE

AIN

MAX106_A MAX106_B ±2Relative Accuracy (Note 1) INL MAX106_C ±3

RMS noise, includes quantization noise

= 1kHz, VIN = 4.096V

P-P

, 165ksps)

±1

0.32

165 ksps

REF

40 pF

LSB

RMS

MAX1065/MAX1066

Low-Power, 14-Bit Analog-to-Digital Converters

with Parallel Interface

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= 5V, external reference = 4.096V, C

REF

= 1µF, C

REFADJ

= 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted.

Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

INTERNAL REFERENCE

REF Output Voltage V

REF Output Tempco TC

REF Short-Circuit Current I

Capacitive Bypass at REFADJ C

Capacitive Bypass at REF C

REFADJ Input Leakage Current I

REF

REFSC

REFADJ

REF

REFADJ

EXTERNAL REFERENCE

REFADJ Buffer Disable Threshold

To power-down the internal reference

REF Input Voltage Range Internal reference disabled 3.8 AV

REF Input Current I

REF

V Shutdown mode ±0.1

DIGITAL INPUTS/OUTPUTS (CS, R/C, EOC, D0–D13, RESET, HBEN)

Input High Voltage V

Input Low Voltage V

Input Leakage Current I

Input Hysteresis V

Input Capacitance C

Output High Voltage V

HYST

SOURCE

DV AV

SINK

Output Low Voltage V

DV AV

Three-State Leakage Current I

Three-State Output Capacitance

D0–D13 ±0.1 ±10 µA

POWER REQUIREMENTS

Analog Supply Voltage AV

Digital Supply Voltage DV

Internal reference

Analog Supply Current I

AVDD

External reference

= 4.096V, f

REF

= 0 or DV

= 0.5mA,

= 2.7V to 5.25V,

= 5.25V

= 1.6mA,

= 2.7V to 5.25V,

= 5.25V

4.056 4.096 4.136 V

0.1 µF

1µF

0.4

= 165ksps 62 120

SAMPLE

0.7 x

VDD

0.4

4.75 5.25 V

2.7 AV

165ksps 2.7 3.2

100ksps 2.0

10ksps 1.0

1ksps 1.0

165ksps 1.8 2.3

100ksps 1.1

10ksps 0.1

1ksps 0.01

±35 ppm/°C ±10 mA

20 µA

±0.1 ±1 µA

0.1 V

15 pF

0.1

0.3 x

0.4 V

µA

MAX1065/MAX1066

Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= 5V, external reference = 4.096V, C

REF

= 1µF, C

REFADJ

= 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted.

Typical values are at T

= +25°C.)

TIMING CHARACTERISTICS (Figures 1 and 2)

(AVDD= 4.75V to 5.25V, DVDD= 2.7V to AVDD, external reference = 4.096V, C

REF

= 1µF, C

REFADJ

= 0.1µF, C

13–D0,

EOC

= 20pF,

= T

MIN

to T

MAX

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

Note 1: Relative accuracy is the deviation of the analog value at any code from its theoretical value after offset and gain errors have

been removed.

Note 2: Offset nulled. Note 3: Maximum specification is limited by automated test equipment. Note 4: Defined as the change in positive full scale caused by a ±5% variation in the nominal supply. Note 5: To ensure best performance, finish reading the data and wait t

before starting a new acquisition.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Digital Supply Current I

DVDD

D0–D13 = all zeros

Full power-down Shutdown Supply Current (Note 3)

SHDN

REF and REF

buffer enabled

(standby mode)

Power-Supply Rejection Ratio (Note 4)

PSRR AV

165ksps 0.5 0.7

100ksps 0.3

10ksps 0.03

1ksps 0.003

AVDD

DVDD

AVDD

DVDD

= 5V, ±5%, full-scale input 68 dB

0.05 5 mA

0.5 5 µA

1.0 1.2 mA

0.5 5 µA

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Acquisition Time t

Conversion Time t

CS Pulse Width High t

CS Pulse Width Low t

R/C to CS Fall Setup Time t

R/C to CS Fall Hold Time t

CS to Output Data Valid t

HBEN Transition To Output Data Valid (MAX1066 only)

EOC Fall To CS Fall t

CS Rise To EOC Rise t

Bus Relinquish Time (Note 5)

ACQ

CONV

CSH

CSL

DO1

EOC

(Note 5) 40 ns

= 4.75V to 5.25V 40

(Note 5)

DVDD

= 2.7V to 4.74V 60

DVDD

= 4.75V to 5.25V 40

= 2.7V to 5.25V 60

= 4.75V to 5.25V 40

= 2.7V to 4.74V 80

= 4.75V to 5.25V 40

= 2.7V to 4.74V 80

= 4.75V to 5.25V 40

= 2.7V to 4.74V 80

= 4.75V to 5.25V 40

= 2.7V to 4.74V 80

1.1

4.7

0ns

µs

MAX1065/MAX1066

Low-Power, 14-Bit Analog-to-Digital Converters

with Parallel Interface

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(AVDD= DVDD= 5V, external reference = 4.096V, C

REF

= 1µF, C

REFADJ

= 0.1µF, TA = +25°C, unless otherwise noted.)

DNL vs. OUTPUT CODE

1.0

0.8

0.6

0.4

0.2

DNL (LSB)

-0.2

-0.4

-0.6

-0.8

-1.0 0 16384

OUTPUT CODE

+ I

AVDD

SUPPLY CURRENT

DVDD

1228881924096

2.0

1.5

1.0

MAX1065/MAX1066 toc01

0.5

INL (LSB)

-0.5

-1.0

-1.5

-2.0

vs. TEMPERATURE

3.5

3.0

2.5

2.0

1.5

SUPPLY CURRENT (mA)

1.0

0.5

-40

SAMPLE RATE = 165ksps

806040200-20

TEMPERATURE (°C)

5.0

4.5

4.0

3.5

MAX1065/MAX1066 toc04

3.0

2.5

2.0

1.5

SHUTDOWN CURRENT (µA)

1.0

0.5

INL vs. OUTPUT CODE

0 16384

OUTPUT CODE

+ I

AVDD

DVDD

vs. TEMPERATURE

-40

TEMPERATURE (°C)

1228881924096

SHUTDOWN CURRENT

806040200-20

MAX1065/MAX1066 toc02

0.1

0.01

SUPPLY CURRENT (mA)

0.001

0.0001

0.01 1000

4.136

4.126

4.116

MAX1065/MAX1066 toc05

4.106

4.096

4.086

INTERNAL REFERENCE (V)

4.076

4.066

4.056

-40

+ I

AVDD

SUPPLY CURRENT

DVDD

vs. SAMPLE RATE

CONVERSION RATE (ksps)

INTERNAL REFERENCE

vs. TEMPERATURE

TEMPERATURE (°C)

MAX1065/MAX1066 toc03

1001010.1

MAX1065/MAX1066 toc06

806040200-20

OFFSET ERROR vs. TEMPERATURE

1000

800

600

400

200

-200

OFFSET ERROR (µV)

-400

-600

-800

-40

TEMPERATURE (°C)

SINAD vs. FREQUENCY

SAMPLE RATE = 165ksps

0.1 100 FREQUENCY (kHz)

101

MAX1065/MAX1066 toc07

806040200-20

0.020

GAIN ERROR vs. TEMPERATURE

0.015

0.010

0.005

-0.005

GAIN ERROR (%FSR)

-0.010

-0.015

-0.020

-40

TEMPERATURE (°C)

MAX1065/MAX1066 toc08

806040200-20

100

SINAD (dB)

MAX1065/MAX1066 toc09

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