MAX1177BCUP+ Datasheet MAX1177ACUP+, MAX1177AEUP+, MAX1177BCUP+ | P1-P3

General Description

The MAX1177 is a 16-bit, low-power, successive-

approximation analog-to-digital converter (ADC) featur-

ing automatic power-down, a factory-trimmed internal

clock, and a byte-wide parallel interface. The device

operates from a single +4.75V to +5.25V analog supply

and features a separate digital supply input for direct

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

The MAX1177 accepts an analog input voltage range

from 0 to +10V. It consumes no more than 26.5mW at a

sampling rate of 135ksps when using an external refer-

ence, and 31mW when using the internal +4.096V refer-

ence. AutoShutdown™ reduces supply current to

0.4mA at 10ksps.

The MAX1177 is ideal for high-performance, battery-

powered, data-acquisition applications. Excellent AC

performance (THD = -100dB) and DC accuracy (±3

LSB INL) make this device ideal for industrial process

control, instrumentation, and medical applications.

The MAX1177 is available in a 20-pin TSSOP package

and is 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

♦ Byte-Wide Parallel Interface

♦ Analog Input Voltage Range: 0 to +10V

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

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

♦ ±3 LSB INL

♦ ±1 LSB DNL

♦ Low Supply Current (max)

2.9mA (External Reference)

3.8mA (Internal Reference)

5µA AutoShutdown Mode

♦ Small Footprint

♦ 20-Pin TSSOP Package

MAX1177

16-Bit, 135ksps, Single-Supply ADC

with 0 to 10V Input Range

________________________________________________________________ Maxim Integrated Products 1

D0–D7

D8–D15

µP DATA

BUS

AGND DGND

+5V ANALOG +5V DIGITAL

ANALOG INPUT AIN

HBEN

EOC

R/C

REF

REFADJ

HIGH

BYTE

LOW

BYTE

10µF0.1µF

0.1µF0.1µF

MAX1177

Typical Operating Circuit

19-2597; Rev 0; 8/03

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.

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX1177ACUP 0°C to +70°C 20 TSSOP

MAX1177BCUP 0°C to +70°C 20 TSSOP

MAX1177CCUP 0°C to +70°C 20 TSSOP

MAX1177AEUP -40°C to +85°C 20 TSSOP

MAX1177BEUP -40°C to +85°C 20 TSSOP

MAX1177CEUP -40°C to +85°C 20 TSSOP

Pin Configuration and Functional Diagram appear at end of

data sheet.

MAX1177

16-Bit, 135ksps, Single-Supply ADC

with to 10V 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, HBEN 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)

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

Operating Temperature Ranges

MAX1177_CUP ...................................................0°C to +70°C

MAX1177_EUP ................................................-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 16 Bits

MAX1177A -1 +1

MAX1177B -1.0 +1.5

Differential Nonlinearity DNL

No missing codes

over temperature

MAX1177C -1 +2

LSB

MAX1177A -3 +3

MAX1177B -3 +3

Integral Nonlinearity INL

MAX1177C -4 +4

LSB

RMS noise, external reference 0.6

Transition Noise

Internal reference 0.75

LSB

RMS

Offset Error -10 0 +10 mV

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 85 90 dB

Signal-to-Noise Ratio SNR 86 91 dB

Total Harmonic Distortion THD -100 -92 dB

Spurious-Free Dynamic Range SFDR 92 103 dB

ANALOG INPUT

Input Range V

AIN

010V

Normal operation 5.3 6.9 9.2

Input Resistance R

AIN

Shutdown mode 5.3

kΩ

Input Current I

AIN

0 ≤ V

AIN

≤ +10V -0.1 +2.0 mA

Input Capacitance C

10 pF

MAX1177

16-Bit, 135ksps, Single-Supply ADC

with 0 to 10V 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

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

Tri-State Output Leakage I

±10 µA

Tri-State Output Capacitance C

15 pF

POWER SUPPLIES

Analog Supply Voltage AV

4.75 5.25 V

Digital Supply Voltage DV

2.70 5.25 V

External reference, 135ksps 2.9

Analog Supply Current I

AVDD

Internal reference, 135ksps 3.8

Shutdown mode (Note 1), digital input =

or 0V

0.5 5 µA

Shutdown Supply Current I

SHDN

Standby mode 3.7 mA

Digital Supply Current I

DVDD

0.75 mA

Power-Supply Rejection AV

= DV

= 4.75V to 5.25V 3.5 LSB

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

MAX1177BCUP+

Mfr. #:

Buy MAX1177BCUP+

Manufacturer:

Maxim Integrated

Description:

Analog to Digital Converters - ADC 16-Bit, 135ksps, Single-Supply ADC with 0 to 10V Input Range

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MAX1177BCUP+

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