MAXIM MAX1062 Technical data

General Description

The MAX1062 low-power, 14-bit analog-to-digital con­verter (ADC) features a successive approximation ADC,
automatic power-down, fast 1.1µs wake-up, and a high­speed SPI™/QSPI™/MICROWIRE™-compatible inter­face. The MAX1062 operates with a single +5V analog
supply and features a separate digital supply, allowing
direct interfacing with 2.7V to 5.25V digital logic.

At the maximum sampling rate of 200ksps, the
MAX1062 consumes only 2.5mA. Power consumption is
only 12.5mW (AVDD= DVDD= 5V) at a 200ksps (max)
sampling rate. AutoShutdown™ reduces supply current
to 130µA at 10ksps and to less than 10µA at reduced
sampling rates.

Excellent dynamic performance and low power, com­bined with ease of use and small package size (10-pin
µMAX) make the MAX1062 ideal for battery-powered
and data-acquisition applications or for other circuits
with demanding power consumption and space
requirements.

Applications

Motor Control

Industrial Process Control

Industrial I/O Modules

Data-Acquisition Systems

Thermocouple Measurements

Accelerometer Measurements

Portable- and Battery-Powered Equipment

Features

♦ 14-Bit Resolution, 1LSB DNL

♦ +5V Single-Supply Operation

♦ Adjustable Logic Level (2.7V to 5.25V)

♦ Input Voltage Range: 0 to V

REF

♦ Internal Track/Hold, 4MHz Input Bandwidth

♦ SPI/QSPI/MICROWIRE-Compatible Serial Interface

♦ Small 10-Pin µMAX Package

♦ Low Power

2.5mA at 200ksps
130µA at 10ksps

0.1µA in Power-Down Mode

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

19-2203; Rev 0; 10/01

Functional Diagram appears at end of data sheet.

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.

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.

查询MAX1062供应商

PART

MAX1062ACUB 0°C to 70°C 10 µMAX ±1
MAX1062BCUB 0°C to 70°C 10 µMAX ±2
MAX1062CCUB 0°C to 70°C 10 µMAX ±3
MAX1062AEUB -40°C to 85°C 10 µMAX ±1
MAX1062BEUB -40°C to 85°C 10 µMAX ±2
MAX1062CEUB -40°C to 85°C 10 µMAX ±3

TEMP.

RANGE

PIN­PACKAGE

INL

(LSB)

TOP VIEW

REF

AV

AGND

1

2

DD

MAX1062

3

4

5

µMAX

10

AIN

9

AGND

8

DV

DD

DGNDCS

7

DOUTSCLK

6

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AVDD= DVDD= +4.75V to +5.25V, f

SCLK

= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V

REF

= +4.096V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +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

DV

DD

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

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

AIN, REF to AGND ...................................-0.3V to (AV

DD

+ 0.3V)

SCLK, CS to DGND ..................................................-0.3V to +6V

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

DD

+ 0.3V)

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

Continuous Power Dissipation (T

A

= +70°C)

10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW

Operating Temperature Ranges

MAX1062_CUB .................................................0°C to +70°C

MAX1062_EUB ..............................................-40°C to +85°C

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC ACCURACY (NOTE 1)

Resolution 14 Bits

Relative Accuracy (Note 2) INL

Differential Nonlinearity DNL No missing codes over temperature ±0.5 ±1 LSB

Transition Noise RMS noise ±0.32 LSB

Offset Error 0.2 1 mV
Gain Error (Note 3) ±0.002 ±0.01 %FSR

Offset Drift 0.4 ppm/oC

Gain Drift (Note 3) 0.2 ppm/oC

DYNAMIC SPECIFICATIONS (1kHz sine wave, 4.096Vp-p) (Note 1)

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 87 101 dB

Full-Power Bandwidth -3dB point 4 MHz

Full-Linear Bandwidth SINAD > 81dB 20 kHz

CONVERSION RATE

Conversion Time (Note 4) t

Serial Clock Frequency f

Aperture Delay 15 ns

Aperture Jitter <50 ps

Sample Rate f

Track/Hold Acquisition Time t

MAX1062A ±1
MAX1062B ±2
MAX1062C ±3

CONV

SCLK

f

S

ACQ

/ 24 200 ksps

SCLK

5 240 µs

0.1 4.8 MHz

1.1 µs

LSB

RMS

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= +4.75V to +5.25V, f

SCLK

= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V

REF

= +4.096V, TA= T

MIN

to T

MAX

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ANALOG INPUT (AIN)

Input Range V

Input Capacitance C

EXTERNAL REFERENCE

Input Voltage Range V

Input Current I

DIGITAL INPUTS (SCLK, CS)

Input High Voltage V

Input Low Voltage V

Input Leakage Current I

Input Hysteresis V

Input Capacitance C

DIGITAL OUTPUT (DOUT)

Output High Voltage V

Output Low Voltage V

Three-State Output Leakage
Current

Three-State Output Capacitance C

POWER SUPPLIES

Analog Supply AV

Digital Supply DV

Analog Supply Current I

Digital Supply Current I

AIN

AIN

REF

V

= 4.096V, f

REF

REF

V

= 4.096V, SCLK idle 0.01

REF

SCLK

CS = DVDD, SCLK idle 0.01

DVDD = +2.7V to +5.25V

IH

DVDD = +2.7V to +5.25V

IL

V

IN

HYST

IN

OH

OL

I

L

OUT

DD

DD

AVDD

= 0 to DV

IN

I

SOURCE

I

SINK

I

= 1.6mA, DVDD = +2.7V to +5.25V 0.4

SINK

CS = DV

CS = DV

DD

= 0.5mA, DVDD = +2.7V to +5.25V

= 10mA, DVDD = +4.75V to +5.25V 0.7

DD

DD

CS = DGND

CS = DGND,

DVDD

DOUT = all
zeros

0V

REF

40 pF

3.8 AV

= 4.8MHz 100

0.7 x

DV

DD

0.3 x

DV

±0.1 ±1 µA

0.2 V

15 pF

DV

-

DD

0.25V

±0.1 ±10 µA

15 pF

4.75 5.25 V

2.7 5.25 V

200ksps 2.0 2.5

100ksps 1.0

10ksps 0.1

1ksps 0.01

200ksps 0.6 1.0

100ksps 0.3

10ksps 0.03

1ksps 0.003

DD

DD

V

V

µA

V

V

V

V

mA

mA

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

4 _______________________________________________________________________________________

Note 1: AVDD= DVDD= +5V.
Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has

been calibrated.

Note 3: Offset and reference errors nulled.
Note 4: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5: Defined as the change in positive full scale caused by a ±5% variation in the nominal supply voltage.

MAX1062 TIMING CHARACTERISTICS (Figures 1, 2, 3, and 6)

(AVDD= DVDD= +4.75V to +5.25V, f

SCLK

= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V

REF

= +4.096V, TA= T

MIN

to T

MAX

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

(AVDD= +4.75V to +5.25V, DVDD= +2.7V to +5.25V, f

SCLK

= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V

REF

=

+4.096V, T

A

= T

MIN

to T

MAX

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

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= +4.75V to +5.25V, f

SCLK

= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V

REF

= +4.096V, TA= T

MIN

to T

MAX

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Shutdown Supply Current

Power-Supply Rejection Ratio
(Note 5)

I

+

AVDD

I

DVDD

PSRR

CS = DVDD, SCLK = idle 0.1 10 µA

AV

= DVDD = +4.75V to +5.25V, full-scale

DD

input

68 dB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Acquisition Time t

SCLK to DOUT Valid t

CS Fall to DOUT Enable t
CS Rise to DOUT Disable t
CS Pulse Width t
CS Fall to SCLK Rise Setup t
CS Rise to SCLK Rise Hold t

SCLK High Pulse Width t

SCLK Low Pulse Width t

SCLK Period t

ACQ

C

DO

DV

TR

CSW

CSS

CSH

CH

CL

CP

= 50pF 50 ns

DOUT

C

= 50pF 80 ns

DOUT

C

= 50pF 80 ns

DOUT

1.1 µs

50 ns

100 ns

0ns

65 ns

65 ns

208 ns

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Acquisition Time t

SCLK to DOUT Valid t

CS Fall to DOUT Enable t
CS Rise to DOUT Disable t
CS Pulse Width t
CS Fall to SCLK Rise Setup t
CS Rise to SCLK Rise Hold t

SCLK High Pulse Width t

SCLK Low Pulse Width t

SCLK Period t

ACQ

DO

DV

TR

CSW

CSS

CSH

CH

CL

CP

C

C

C

DOUT

DOUT

DOUT

1.1 µs

= 50pF 100 ns

= 50pF 100 ns

= 50pF 80 ns

50 ns

100 ns

0ns

65 ns

65 ns

208 ns

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(AVDD= DVDD= +5V, f

SCLK

= 4.8MHz, C

LOAD

= 50pF, V

REF

= +4.096V, TA= 25°C, unless otherwise noted.)

INL vs. OUTPUT CODE

1.0

0.8

0.6

0.4

0.2

0

INL (LSB)

-0.2

-0.4

-0.6

-0.8

-1.0
0 16384

OUTPUT CODE

SINAD VS. FREQUENCY

100

90

80

70

60

50

SINAD (dB)

40

30

20

f

10

0

= 200kHz

SAMPLE

0.1 100101
FREQUENCY (kHz)

13107983065533276

MAX1062 toc01

MAX1062 toc04

1.0

0.8

0.6

0.4

0.2

0

DNL (LSB)

-0.2

-0.4

-0.6

-0.8

-1.0
0 16384

110

100

90

80

70

60

50

SFDR (dB)

40

30

20

10

0

0.1 100101

DNL vs. OUTPUT CODE

OUTPUT CODE

SFDR VS. FREQUENCY

f

= 200kHz

SAMPLE

FREQUENCY (kHz)

MAX1062 FFT

0

-20

MAX1062 toc02

-40

-60

-80

MAGNITUDE (dB)

-100

-120

13107983065533276

-140
04020 60 8010 5030 70 90 100

FREQUENCY (kHz)

THD VS. FREQUENCY

0

f

= 200kHz

SAMPLE

-10

-20

MAX1062 toc05

-30

-40

-50

-60

THD (dB)

-70

-80

-90

-100

-110

0.1 100101

FREQUENCY (kHz)

MAX1062 toc03

MAX1062 toc06

SUPPLY CURRENT

10

1

0.1

0.01

SUPPLY CURRENT (mA)

0.001

0.0001

0.01 0.1 1 10 100 1000

VS. CONVERSION RATE

CONVERSION RATE (kHz)

3.5

3.0

MAX1062 toc07

2.5

2.0

1.5

SUPPLY CURRENT (mA)

1.0

0.5

0

4.75 4.954.85 5.05 5.15 5.25

SUPPLY CURRENT

VS. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.5

3.0

MAX1062 toc08

2.5

2.0

1.5

SUPPLY CURRENT (mA)

1.0

0.5

0

SUPPLY CURRENT VS. TEMPERATURE

MAX1062 toc09

AVDD = DVDD= +5V

-40 10-15 35 60 85

TEMPERATURE (°C)

MAX1062

14-Bit, +5V, 200ksps ADC with 10µA Shutdown

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(AVDD= DVDD= +5V, f

SCLK

= 4.8MHz, C

LOAD

= 50pF, V

REF

= +4.096V, TA= 25°C, unless otherwise noted.)

0

4

2

8

6

12

10

14

18

16

20

4.75 4.85 4.95 5.05 5.15 5.25

MAX1062 toc10

SUPPLY VOLTAGE (V)

I

SHDN

(nA)

SHUTDOWN SUPPLY CURRENT

VS. SUPPLY VOLTAGE

0

150

100

50

200

250

300

350

400

450

-40 10-15 35 60 85

SHUTDOWN SUPPLY CURRENT

VS. TEMPERATURE

MAX1062 toc11

TEMPERATURE (°C)

I

SHDN

(nA)

AVDD = DVDD = +5V

-1000

-400

-600

-800

-200

0

200

400

600

800

1000

4.75 4.954.85 5.05 5.15 5.25

OFFSET ERROR

VS. ANALOG SUPPLY VOLTAGE

MAX1062 toc12

SUPPLY VOLTAGE (V)

OFFSET ERROR (µV)

-1000

-400

-600

-800

-200

0

200

400

600

800

1000

-40 10-15 35 60 85

OFFSET ERROR VS. TEMPERATURE

MAX1062 toc13

TEMPERATURE (°C)

OFFSET ERROR (µV)

-0.020

-0.015

-0.010

-0.005

0

0.005

0.010

0.015

0.020

4.75 4.85 4.95 5.05 5.15 5.25

GAIN ERROR

VS. ANALOG SUPPLY VOLTAGE

MAX1062 toc14

SUPPLY VOLTAGE (V)

GAIN ERROR (%)

-0.020

-0.015

-0.010

-0.005

0

0.005

0.010

0.015

0.020

-40 -15 10 35 60 85

GAIN ERROR VS. TEMPERATURE

MAX1062 toc15

TEMPERATURE (°C)

GAIN ERROR (%)