MAXIM MAX1036, MAX1039 Technical data

General Description

The MAX1036–MAX1039 low-power, 8-bit, multichannel,
analog-to-digital converters (ADCs) feature internal
track/hold (T/H), voltage reference, clock, and an
I2C-compatible 2-wire serial interface. These devices
operate from a single supply and require only 350µA at
the maximum sampling rate of 188ksps. Auto­Shutdown™ powers down the devices between conver­sions reducing supply current to less than 1µA at low
throughput rates. The MAX1036/MAX1037 have four ana­log input channels each, while the MAX1038/MAX1039
have twelve analog input channels. The analog inputs are
software configurable for unipolar or bipolar and single­ended or pseudo-differential operation.

The full-scale analog input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to VDD. The MAX1037/
MAX1039 feature a 2.048V internal reference and the
MAX1036/MAX1038 feature a 4.096V internal reference.

The MAX1036/MAX1037 are available in 8-pin SOT23
packages. The MAX1038/MAX1039 are available in 16­pin QSOP packages. The MAX1036–MAX1039 are guar­anteed over the extended industrial temperature range
(-40°C to +85°C). Refer to MAX1136–MAX1139 for 10-bit
devices and to the MAX1236–MAX1239 for 12-bit
devices.

Applications

Hand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision

Features

♦ High-Speed I2C-Compatible Serial Interface

400kHz Fast Mode

1.7MHz High-Speed Mode

♦ Single Supply

2.7V to 3.6V (MAX1037/MAX1039)

4.5V to 5.5V (MAX1036/MAX1038)

♦ Internal Reference

2.048V (MAX1037/MAX1039)

4.096V (MAX1036/MAX1038)

♦ External Reference: 1V to V

DD

♦ Internal Clock

♦ 4-Channel Single-Ended or 2-Channel Pseudo-

Differential (MAX1036/MAX1037)

♦ 12-Channel Single-Ended or 6-Channel Pseudo-

Differential (MAX1038/MAX1039)

♦ Internal FIFO with Channel-Scan Mode

♦ Low Power

350µA at 188ksps
110µA at 75ksps
8µA at 10ksps
1µA in Power-Down Mode

♦ Software Configurable Unipolar/Bipolar

♦ Small Packages

8-Pin SOT23 (MAX1036/MAX1037)
16-Pin QSOP (MAX1038/MAX1039)

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2442; Rev 1; 10/02

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.

PART TEMP RANGE

TUE

(LSB)

INPUT

INTERNAL

TOP

MARK

MAX1036EKA-T

8 SOT23-8 ±2 4 4.096 AAJE

MAX1037EKA-T

8 SOT23-8 ±2 4 2.048 AAJG

MAX1038AEEE

16 QSOP ±1 12 4.096 —

MAX1039AEEE

16 QSOP ±1 12 2.048 —

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Pin Configurations and Typical Operating Circuit appear
at end of data sheet.

查询MAX1035供应商

PIN-PACKAGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

CHANNELS

REFERENCE (V)

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= 2.7V to 3.6V (MAX1037/MAX1039), VDD= 4.5V to 5.5V (MAX1036/MAX1038). External reference, V

REF

= 2.048V

(MAX1037/MAX1039), V

REF

= 4.096V (MAX1036/MAX1038). External clock, f

SCL

= 1.7MHz, TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +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.

VDDto GND..............................................................-0.3V to +6V

AIN0–AIN11, REF to

GND ......................-0.3V to the lower of (V

DD

+ 0.3V) and +6V

SDA, SCL to GND.....................................................-0.3V to +6V

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

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SOT23 (derate 7.1mW/°C above +70°C).............567mW

16-Pin QSOP (derate 8.3mW/°C above +70°C).........666.7mW

Operating Temperature Range ...........................-40°C to +85°C

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

Storage Temperature Range .............................-60°C to +150°C

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC ACCURACY (Note 1)

Resolution 8 Bits
Relative Accuracy INL (Note 2) ±1

LSB

Differential Nonlinearity DNL No missing codes over temperature ±1

LSB

Offset Error

LSB

Offset Error Temperature
Coefficient

3

ppm/°C

Gain Error (Note 3) ±1

LSB

Gain Temperature Coefficient ±1

ppm/°C

MAX1036/MAX1037

±2

Total Unadjusted Error TUE

MAX1038A/MAX1039A

±1

LSB

Channel-to-Channel Offset
Matching

LSB

Channel-to-Channel Gain
Matching

LSB

Input Common-Mode Rejection
Ratio

Pseudo-differential input mode 75 dB

DYNAMIC PERFORMANCE (f

IN(sine wave)

= 25kHz, VIN = V

REF(P-P)

, f

SAMPLE

= 188ksps, RIN = 100Ω)

Signal-to-Noise Plus Distortion

49 dB

Total Harmonic Distortion THD Up to the 5th harmonic -69 dB

Spurious-Free Dynamic Range SFDR 69 dB

Channel-to-Channel Crosstalk (Note 4) 75 dB

Full-Power Bandwidth -3dB point 2.0

MHz

Full-Linear Bandwidth SINAD > 49dB

kHz

CONVERSION RATE

Internal clock 6.1

Conversion Time (Note 5)

External clock 4.7

µs

CMRR

SINAD

t

CONV

±0.5
±0.5

±0.1

±0.5

200

±1.5

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 2.7V to 3.6V (MAX1037/MAX1039), VDD= 4.5V to 5.5V (MAX1036/MAX1038). External reference, V

REF

= 2.048V

(MAX1037/MAX1039), V

REF

= 4.096V (MAX1036/MAX1038). External clock, f

SCL

= 1.7MHz, TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Internal clock, SCAN[1:0] = 01
(MAX1036/MAX1037)

76

Internal clock, SCAN[1:0] = 00
CS[3:0] = 1011 (MAX1038/MAX1039)

77

Throughput Rate

External clock 188

ksps

Track/Hold Acquisition Time

ns

Internal Clock Frequency

MHz

External clock, fast mode 45

Aperture Delay t

AD

External clock, high-speed mode 30

ns

ANALOG INPUT (AIN0–AIN11)

Unipolar 0

Input Voltage Range, Single
Ended and Differential (Note 6)

Bipolar

V

Input Multiplexer Leakage Current

On/off-leakage current, V

AIN

_= 0 or V

DD,

no clock, f

SCL

= 0

±1µA

Input Capacitance C

IN

18 pF

INTERNAL REFERENCE (Note 7)

MAX1037/MAX1039

Reference Voltage V

REF

TA = +25°C

MAX1036/MAX1038

V

Reference Temperature
Coefficient

ppm/°C

Reference Short-Circuit Current 10 mA

Reference Source Impedance (Note 8)

Ω

EXTERNAL REFERENCE

Reference Input Voltage Range V

REF

(Note 9) 1.0

V

REF Input Current I

REF

f

SAMPLE

= 188ksps 14 30 µA

DIGITAL INPUTS/OUTPUTS (SCL, SDA)

Input High Voltage V

IH

V

Input Low Voltage V

IL

V

Input Hysteresis

V

Input Current I

IN

VIN = 0 to V

DD

±10 µA

Input Capacitance C

IN

15 pF

Output Low Voltage V

OL

I

SINK

= 3mA 0.4 V

f

SAMPLE

TC

REF

V

HYST

588

1.925 2.048 2.171

3.850 4.096 4.342

0.7 x V

DD

0.1 x V

DD

2.25

±V

±0.01

120

675

0.3 x V

V

REF

V

REF

DD

/ 2

DD

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 2.7V to 3.6V (MAX1037/MAX1039), VDD= 4.5V to 5.5V (MAX1036/MAX1038). External reference, V

REF

= 2.048V

(MAX1037/MAX1039), V

REF

= 4.096V (MAX1036/MAX1038). External clock, f

SCL

= 1.7MHz, TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER REQUIREMENTS

MAX1037/MAX1039 2.7 3.6

Supply Voltage (Note 10) V

DD

MAX1036/MAX1038 4.5 5.5

V

650

f

SAMPLE

=

188ksps

f

SAMPLE

=

75ksps

8

f

SAMPLE

=

10ksps

10

2

f

SAMPLE

=

1ksps

2.5

Supply Current I

DD

Power-down 1 10

µA

Power-Supply Rejection Ratio PSRR (Note 11)

±1

LSB/V

TIMING CHARACTERISTICS FOR 2-WIRE FAST MODE (Figures 1A and 2)

Serial Clock Frequency f

SCL

400 kHz

Bus Free Time Between a STOP
and a START Condition

t

BUF

1.3 µs

Hold Time for Start Condition

,

0.6 µs

Low Period of the SCL Clock t

LOW

1.3 µs

High Period of the SCL Clock t

HIGH

0.6 µs

Setup Time for a Repeated START
Condition (Sr)

,

0.6 µs

Data Hold Time

,

(Note 12) 0 150 ns

Data Setup Time

,

ns

Rise Time of Both SDA and SCL
Signals, Receiving

t

R

(Note 13)

300 ns

Fall Time of SDA Transmitting t

F

(Note 13)

300 ns

Setup Time for STOP Condition

,

0.6 µs

Capacitive Load for Each Bus Line

C

B

400 pF

Pulse Width of Spike Suppressed

t

SP

50 ns

TIMING CHARACTERISTICS FOR 2-WIRE HIGH-SPEED MODE (Figures 1B and 2)

Serial Clock Frequency f

SCLH

(Note 14) 1.7

MHz

Hold Time (Repeated) Start
Condition

,

ns

Low Period of the SCL Clock t

LOW

ns

High Period of the SCL Clock t

HIGH

ns

t

HD

STA

t

SU

STA

t

HD

DAT

t

SU

DAT

t

SU

STO

t

HD

STA

Internal REF, external clock 350

External REF, external clock 250

External REF, external clock 110

External REF, internal clock 150

External REF, external clock

External REF, internal clock

External REF, external clock

External REF, internal clock

100

20 + 0.1C

20 + 0.1C

160

320

120

±0.25

B

B

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 2.7V to 3.6V (MAX1037/MAX1039), VDD= 4.5V to 5.5V (MAX1036/MAX1038). External reference, V

REF

= 2.048V

(MAX1037/MAX1039), V

REF

= 4.096V (MAX1036/MAX1038). External clock, f

SCL

= 1.7MHz, TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Setup Time for a Repeated START
Condition (Sr)

ns

Data Hold Time

(Note 12) 0 150 ns

Data Setup Time

10 ns

Rise Time of SCL Signal
(Current Source Enabled)

t

RCL

(Note 13) 20 80 ns

Rise Time of SCL Signal After
Acknowledge Bit

t

RCL1

(Note 13) 20 160 ns

Fall Time of SCL Signal t

FCL

(Note 13) 20 80 ns

Rise Time of SDA Signal t

RDA

(Note 13) 20 160 ns

Fall Time of SDA Signal t

FDA

(Note 13) 20 160 ns

Setup Time for STOP Condition

ns

Capacitive Load for Each Bus Line

C

B

400 pF

Pulse Width of Spike Suppressed

t

SP

010ns

Note 1: The MAX1036/MAX1038 are tested at VDD= 5V and the MAX1037/MAX1039 are tested at VDD= 3V. All devices are config-

ured for unipolar, single-ended inputs.

Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range and

offsets have been calibrated.

Note 3: Offset nulled.
Note 4: Ground ON channel; sine wave applied to all OFF channels.
Note 5: Conversion time is defined as the number of clock cycles (8) multiplied by the clock period. Conversion time does not

include acquisition time. SCL is the conversion clock in the external clock mode.

Note 6: The absolute voltage range for the analog inputs (AIN0–AIN11) is from GND to V

DD

.

Note 7: When AIN_/REF is configured to be an internal reference (SEL[2:1] = 11), decouple AIN_/REF to GND with a 0.01µF capacitor.
Note 8: The switch connecting the reference buffer to AIN_/REF has a typical on-resistance of 675Ω.
Note 9: ADC performance is limited by the converter’s noise floor, typically 1.4mV

P-P

.

Note 10: Electrical characteristics are guaranteed from V

DD(min)

to V

DD(max)

. For operation beyond this range, see the Typical

Operating Characteristics.

Note 11: Power-supply rejection ratio is measured as:

, for the MAX1037/MAX1039 where N is the number of bits (8) and V

REF

= 2.048V.

Power-supply rejection ratio is measured as:

, for the MAX1036/MAX1038 where N is the number of bits (8) and V

REF

= 2.048V.

Note 12: A master device must provide a data hold time for SDA (referred to V

IL

of SCL) in order to bridge the undefined region of

SCL’s falling edge (Figure 1).

Note 13: C

B

= total capacitance of one bus line in pF. tRand tFmeasured between 0.3VDDand 0.7VDD. Minimum specification is

tested at +25°C with C

B

= 400pF.

Note 14: f

SCLH

must meet the minimum clock low time plus the rise/fall times.

VVVV

V

VV

FS FS

N

REF

55 45

2

55 45

..

..

()−()

[]

×

−

VVVV

V

VV

FS FS

N

REF

33 27

2

33 27

..

..

()−()

[]

×

−

tSU,

STA

tHD,

DAT

tSU,

DAT

tSU,

STO

160

160

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

6 _______________________________________________________________________________________

Typical Operating Characteristics

(VDD= 3.3V (MAX1037/MAX1039), VDD= 5V (MAX1036/MAX1038), f

SCL

= 1.7MHz, external clock (33% duty cycle), f

SAMPLE

= 188ksps,

single ended, unipolar, TA= +25°C, unless otherwise noted.)

150

250

200

350

300

400

450

SUPPLY CURRENT

vs. VOLTAGE

MAX1036 toc01

VDD (V)

I

DD

(µA)

2.5 3.5 4.03.0 4.5 5.0 5.5

A) INTERNAL 4.096V

REF

B) INTERNAL 2.048V

REF

C) EXTERNAL 4.096V

REF

D) EXTERNAL 2.048V

REF

A

C

B

D

150

250

200

350

300

400

450

-40 85

SUPPLY CURRENT
vs. TEMPERATURE

MAX1036 toc02

TEMPERATURE (°C)

I

DD

(µA)

10-15 35 60

INTERNAL 4.096V

REF

INTERNAL 2.048V

REF

EXTERNAL 4.096V

REF

EXTERNAL 2.048V

REF

0

1

3

2

4

5

2.5 3.53.0 4.0 4.5 5.0 5.5

SHUTDOWN SUPPLY CURRENT

vs.

SUPPLY VOLTAGE

MAX1036 toc03

VDD (V)

I

DD

(µA)

SDA = SCL = V

DD

0

1

3

2

4

5

-40 10-15 35 60 85

SHUTDOWN SUPPLY CURRENT

vs.

TEMPERATURE

MAX1036 toc04

TEMPERATURE (°C)

I

DD

(µA)

SDA = SCL = V

DD

V

DD

= 5V

V

DD

= 3.3V

0

100

50

200

150

300

250

350

0203010 40 50 60

AVERAGE SUPPLY CURRENT vs.

CONVERSION RATE (INTERNAL CLOCK)

MAX1036 toc05

CONVERSION RATE (ksps)

AVERAGE I

DD

(µA)

A) INTERNAL REF ALWAYS ON
B) INTERNAL REF AUTOSHUTDOWN
C) EXTERNAL REF

A

C

B

INTERNAL CLOCK MODE

f

SCL

= 1.7MHz

0

150

100

50

300

250

200

450

400

350

500

0 10050 150 200

AVERAGE SUPPLY CURRENT VS.

CONVERSION RATE (EXTERNAL CLOCK)

MAX1036 toc06

CONVERSION RATE (ksps)

AVERAGE I

DD

(µA)

A

C

B

A) INTERNAL REF ALWAYS ON
B) INTERNAL REF AUTOSHUTDOWN
C) EXTERNAL REF

EXTERNAL CLOCK MODE

f

SCL

= 1.7MHz

0.9900

0.9925

0.9950

0.9975

1.0000

1.0025

1.0050

1.0075

1.0100

4.00 4.504.25 4.75 5.00 5.25 5.50

NORMALIZED 4.096V REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

MAX1036 toc7

VDD (V)

V

REF

NORMALIZED

0.980

0.985

0.990

0.995

1.000

1.005

1.010

1.015

1.020

-40 -15 10 35 60 85

INTERNAL 4.096V REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1036 toc08

TEMPERATURE (°C)

V

REF

NORMALIZED

0.9900

0.9925

0.9950

0.9975

1.0000

1.0025

1.0050

1.0075

1.0100

2.5 3.53.0 4.0 4.5 5.0 5.5

INTERNAL 2.048V REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

MAX1036 toc09

VDD (V)

V

REF

NORMALIZED

MAX1036–MAX1039

2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs

_______________________________________________________________________________________ 7

0.980

0.985

0.990

0.995

1.000

1.005

1.010

1.015

1.020

-40 -15 10 35 60 85

INTERNAL 2.048V REFERENCE VOLTAGE

vs. TEMPERATURE

MAX1036 toc10

TEMPERATURE (°C)

V

REF

NORMALIZED

-0.5

-0.2

-0.3

-0.4

-0.1

0

0.1

0.2

0.3

0.4

0.5

0 10050 150 200 250 300

DIFFERENTIAL NONLINEARITY

vs. DIGITAL CODE

MAX1036 toc11

DIGITAL OUTPUT CODE

DNL (LSB)

-0.5

-0.2

-0.3

-0.4

-0.1

0

0.1

0.2

0.3

0.4

0.5

0 10050 150 200 250 300

INTEGRAL NONLINEARITY

vs. DIGITAL CODE

MAX1036 toc12

DIGITAL OUTPUT CODE

INL (LSB)

-120

-80

-100

-40

-60

-20

0

0 100k

FFT PLOT

MAX1036 toc13

FREQUENCY (Hz)

AMPLITUDE (dBc)

40k20k 60k 80k

f

SAMPLE = 188ksps

f

IN = 25kHz

0

0.3

0.2

0.1

0.4

0.5

0.6

0.7

0.8

0.9

1.0

2.5 3.53.0 4.0 4.5 5.0 5.5

OFFSET ERROR vs. SUPPLY VOLTAGE

MAX1036 toc14

VDD (V)

OFFSET ERROR (LSB)

V

REF

= 2.048V

0

0.3

0.2

0.1

0.4

0.5

0.6

0.7

0.8

0.9

1.0

-40 10-15 35 60 85

OFFSET ERROR vs. TEMPERATURE

MAX1036 toc15

TEMPERATURE (°C)

OFFSET ERROR (LSB)

VDD = 3.3V
V

REF

= 2.048V

-0.1

-0.07

-0.08

-0.09

-0.06

-0.05

-0.04

-0.03

-0.02

-0.01

0

2.5 3.53.0 4.0 4.5 5.0 5.5

GAIN ERROR vs. SUPPLY VOLTAGE

MAX1036 toc16

VDD (V)

GAIN ERROR (LSB)

V

REF

= 2.048V

Typical Operating Characteristics (continued)

(VDD= 3.3V (MAX1037/MAX1039), VDD= 5V (MAX1036/MAX1038), f

SCL

= 1.7MHz, external clock (33% duty cycle), f

SAMPLE

= 188ksps,

single ended, unipolar, TA= +25°C, unless otherwise noted.)