MAX1157BEUI+ Datasheet MAX1157BEUI+, MAX1159AEUI+ | P1-P3

MAX1157/MAX1159/MAX1175

14-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

________________________________________________________________ Maxim Integrated Products 1

19-2653; Rev 1; 1/03

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.

General Description

The MAX1157/MAX1159/MAX1175 14-bit, low-power,

successive-approximation analog-to-digital converters

(ADCs) feature automatic power-down, a factory-trimmed

internal clock, and a 14-bit wide parallel interface. The

devices operate from a single +4.75V to +5.25V analog

supply and feature a separate digital supply input for

direct interface with +2.7V to +5.25V digital logic.

The MAX1157 accepts an analog input voltage range

from 0 to +10V while the MAX1159 accepts a bipolar

analog input voltage range of ±10V. The MAX1175

accepts a bipolar analog input voltage range of ±5V.

All devices consume only 23mW at a sampling rate

of 135ksps when using an external reference and

29mW when using the internal +4.096V reference.

AutoShutdown™ reduces supply current to 0.4mA at

10ksps. The MAX1157/MAX1159/MAX1175 are ideal for

high-performance, battery-powered data-acquisition

applications. Excellent AC performance (THD = -100dB)

and DC accuracy (±1LSB INL) make the MAX1157/

MAX1159/MAX1175 ideal for industrial process control,

instrumentation, and medical applications.

The MAX1157/MAX1159/MAX1175 are available in a

28-pin TSSOP package and are fully specified over the

-40°C to +85°C extended temperature range and the

0°C to +70°C commercial temperature range.

Applications

Temperature Sensing and Monitoring

Industrial Process Control

I/O Modules

Data-Acquisition Systems

Precision Instrumentation

Features

♦ Analog Input Voltage Range ±10V, ±5V, or 0 to 10V

♦ 14-Bit Wide Parallel Interface

♦ Single +4.75V to +5.25V Analog Supply Voltage

♦ Interfaces with +2.7V to +5.25V Digital Logic

♦ ±1LSB INL (max)

♦ ±1LSB DNL (max)

♦ Low Supply Current (MAX1159)

5.3mA (External Reference)

6.2mA (Internal Reference)

5µA AutoShutdown Mode

♦ Small Footprint

28-Pin TSSOP Package

Ordering Information

PART TEMP RANGE PIN-PACKAGE

INPUT VOLTAGE

RANGE

INL (LSB)

MAX1157ACUI 0°C to +70°C 28 TSSOP 0 to +10V ±1

MAX1157BCUI 0°C to +70°C 28 TSSOP 0 to +10V ±2

REFADJ

N.C.

DGND

RESET

REF

AGND

AIN

AGND

EOC

R/C

D13

D12

D11

D10

TSSOP

TOP VIEW

MAX1157

MAX1159

MAX1175

Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information continued at end of data sheet.

MAX1157/MAX1159/MAX1175

14-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

to AGND .........................................................-0.3V to +6V

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

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

AIN to AGND .....................................................-16.5V to +16.5V

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

+ 0.3V)

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

D_, EOC to DGND ...................................-0.3V to (DV

+ 0.3V)

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

Continuous Power Dissipation (T

= +70°C)

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

Operating Temperature Range

MAX11_ _ _CUI...................................................0°C to +70°C

MAX11_ _ _EUI ................................................-40°C to +85°C

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

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

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

ELECTRICAL CHARACTERISTICS

(AV

= DV

= +5V ±5%, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AV

, T

= T

MIN

to T

MAX

unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC ACCURACY

Resolution RES 14 Bits

Differential Nonlinearity DNL No missing codes over temperature -1 +1 LSB

MAX11_ _A -1 +1

Integral Nonlinearity INL

MAX11_ _B -2 +2

LSB

RMS noise, external reference 0.32

Transition Noise

Internal reference 0.34

LSB

RMS

MAX1159 -10 0 +10

Offset Error

MAX1157/MAX1175 -10 +10

Gain Error 0 ±0.2 %FSR

Offset Drift 16 µV/°C

Gain Drift ±1 ppm/°C

AC ACCURACY (f

= 1kHz, V

AIN

= full range, 135ksps)

Signal-to-Noise Plus Distortion SINAD 81 85 dB

Signal-to-Noise Ratio SNR 82 85 dB

Total Harmonic Distortion THD -100 -86 dB

Spurious-Free Dynamic Range SFDR 87 103 dB

ANALOG INPUT

MAX1157 0 +10

MAX1159 -10 +10

Input Range V

AIN

MAX1175 -5 +5

MAX1157/MAX1175 Normal operation 5.3 6.9 9.2

MAX1175 Shutdown mode 3

MAX1157 Shutdown mode 5.3

Normal operation 7.8 10 13.0

Input Resistance R

AIN

MAX1159

Shutdown mode 6

kΩ

MAX1157/MAX1159/MAX1175

14-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AV

= DV

= +5V ±5%, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AV

, T

= T

MIN

to T

MAX

unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MAX1157,

0 ≤ V

AIN

≤ +10V

Normal/shutdown

mode

-0.1 +2.0

Normal operation -1.8 +1.2

MAX1159,

-10V ≤ V

AIN

≤ +10V

Shutdown mode -1.8 +1.8

Normal operation -1.8 +0.4

Input Current I

AIN

MAX1175,

-5V ≤ V

AIN

≤ +5V

Shutdown mode -1.8 +1.8

MAX1159, V

AIN

= +10V, shutdown mode to

operating mode

0.5 0.7

Input Current Step at Power-Up I

MAX1175, V

AIN

= +5V, shutdown mode to

operating mode

1 1.4

Input Capacitance C

10 pF

INTERNAL REFERENCE

REF Output Voltage V

REF

4.056 4.096 4.136 V

REF Output Tempco ±35 ppm/°C

REF Short-Circuit Current I

REF-SC

±10 mA

EXTERNAL REFERENCE

REF and REFADJ Input Voltage

Range

3.8 4.2 V

REFADJ Buffer Disable Threshold

0.4

0.1

Normal mode, f

SAMPLE

= 135ksps 60 100

REF Input Current I

REF

Shutdown mode (Note 1) ±0.1 ±10

µA

REFADJ Input Current I

REFADJ

REFADJ = AV

16 µA

DIGITAL INPUTS/OUTPUTS

Output High Voltage V

SOURCE

= 0.5mA, DV

= +2.7V to +5.25V,

= +5.25V

0.4

Output Low Voltage V

SINK

= 1.6mA, DV

= +2.7V to +5.25V,

= +5.25V

0.4 V

Input High Voltage V

0.7 ×

Input Low Voltage V

0.3 ×

Input Leakage Current Digital input = DV

or 0V -1 +1 µA

Input Hysteresis V

HYST

0.2 V

Input Capacitance C

15 pF

Three-State Output Leakage I

±10 µA

Three-State Output Capacitance C

15 pF

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

MAX1157BEUI+

Mfr. #:

Buy MAX1157BEUI+

Manufacturer:

Maxim Integrated

Description:

Analog to Digital Converters - ADC 14-Bit 135ksps 4.2V Precision ADC

Lifecycle:

New from this manufacturer.

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MAX1157BEUI+

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