Rainbow Electronics MAX1189 User Manual

MAX1179/MAX1187/MAX1189

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

Bipolar Analog Input Range

________________________________________________________________ Maxim Integrated Products 1

19-2675; 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 MAX1179/MAX1187/MAX1189 16-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, a factory­trimmed internal clock, and a 16-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 MAX1179 accepts a bipolar input voltage range of
±5V. The MAX1187 accepts an analog input voltage
range from 0 to +10V, while the MAX1189 accepts a
bipolar analog input voltage range of ±10V. 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
MAX1179/MAX1187/MAX1189 are ideal for high-perfor­mance, battery-powered data-acquisition applications.
Excellent AC performance (THD = -100dB) and DC
accuracy (±2LSB INL) make the MAX1179/MAX1187/
MAX1189 ideal for industrial process control, instrumen­tation, and medical applications.

The MAX1179/MAX1187/MAX1189 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

♦ 16-Bit Wide Parallel Interface

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

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

♦ ±2LSB INL (max)

♦ ±1LSB DNL (max)

♦ Low Supply Current (MAX1189)

5.3mA (External Reference)

6.2mA (Internal Reference)
5µA AutoShutdown Mode

♦ Small Footprint

28-Pin TSSOP Package

Ordering Information

Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information continued at end of data sheet.

TOP VIEW

D10

D11

D12

D13

D14

D15

R/C

EOC

AV

AGND

AIN

AGND

1

D8

2

D9

3

4

5

MAX1179

6

MAX1187
MAX1189

7

8

9

10

11

DD

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

D7

D6

D5

D4

D3

D2

D1

D0

DV

DD

DGND

CS

RESET

REF

REFADJ

TSSOP

PART TEMP RANGE PIN-PACKAGE

MAX1179ACUI 0°C to +70°C 28 TSSOP ±5V ±2

MAX1179BCUI 0°C to +70°C 28 TSSOP ±5V ±2

INPUT VOLTAGE

RANGE

INL (LSB)

MAX1179/MAX1187/MAX1189

16-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.

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

DV

DD

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

DD

+ 0.3V)

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

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

DD

+ 0.3V)

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

Continuous Power Dissipation (T

A

= +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

(AVDD= DVDD= +5V ±5%, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AVDD, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.)

DC ACCURACY

Resolution RES 16 Bits

Integral Nonlinearity INL

Transition Noise

Offset Error -10 0 +10 mV

Gain Error 0 ±0.2 %FSR

Offset Drift 16 µV/°C

Gain Drift ±1 ppm/°C

AC ACCURACY (fIN = 1kHz, V

Signal-to-Noise Plus Distortion SINAD 86 90 dB

Signal-to-Noise Ratio SNR 87 91 dB

Total Harmonic Distortion THD -100 -92 dB

Spurious-Free Dynamic Range SFDR 92 103 dB

ANALOG INPUT

Input Range V

Input Resistance R

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

= full range, 135ksps)

AIN

No missing codes
over temperature

MAX11_ _A -2 +2

MAX11_ _B -2 +2

MAX11_ _C -4 +4

RMS noise, external reference 0.6

Internal reference 0.75

MAX1179 -5 +5

MAX1187 0 +10

AIN

MAX1189 -10 +10

MAX1179/MAX1187 Normal operation 5.3 6.9 9.2

MAX1179 Shutdown mode 3

MAX1177 Shutdown mode 5.3

AIN

MAX1189

MAX11_ _A -1 +1

MAX11_ _B -1.0 +1.5Differential Nonlinearity DNL

MAX11_ _C -1 +2

Normal operation 7.8 10 13.0

Shutdown mode 6

LSB

LSB

LSB

V

kΩ

RMS

MAX1179/MAX1187/MAX1189

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

Bipolar Analog Input Range

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= +5V ±5%, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AVDD, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MAX1179,

-5V ≤ V

AIN

Input Current I

AIN

MAX1187,
0 ≤ V

AIN

≤ +10V

MAX1189,

-10V ≤ V

AIN

MAX1179, V

Input Current Step at Power-Up I

PU

operating mode

MAX1189, V
operating mode

Input Capacitance C

IN

INTERNAL REFERENCE

REF Output Voltage V

REF

REF Output Tempco ±35 ppm/°C

REF Short-Circuit Current I

REF-(SC

EXTERNAL REFERENCE

REF and REFADJ Input Voltage
Range

REFADJ Buffer Disable Threshold

REF Input Current I

REFADJ Input Current I

REFADJ

Normal mode, f

REF

Shutdown mode (Note 1) ±0.1 ±10

REFADJ = AV

DIGITAL INPUTS/OUTPUTS

Output High Voltage V

Output Low Voltage V

Input High Voltage V

Input Low Voltage V

OH

OL

I
AV

I
AV

IH

IL

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

SOURCE

= +5.25V

DD

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

SINK

= +5.25V

DD

Input Leakage Current Digital input = DVDD or 0V -1 +1 µA

Input Hysteresis V

Input Capacitance C

Three-State Output Leakage I

Three-State Output Capacitance C

HYST

IN

OZ

OZ

Normal operation -1.8 +0.4

≤ +5V

Shutdown mode -1.8 +1.8

Normal/shutdown
mode

Normal operation -1.8 +1.2

≤ +10V

= +5V, shutdown mode to

AIN

= +10V, shutdown mode to

AIN

SAMPLE

DD

Shutdown mode -1.8 +1.8

= 135ksps 60 100

-0.1 +2.0

1 1.4

0.5 0.7

10 pF

4.056 4.096 4.136 V

±10 mA

3.8 4.2 V

AV

DD

0.4

-

AVDD -

0.1

16 µA

-

DV

DD

0.4

0.4 V

0.7 ×

DV

DD

0.3 ×

DV

DD

0.2 V

15 pF

±10 µA

15 pF

mA

mA

V

µA

V

V

V

MAX1179/MAX1187/MAX1189

16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range

4 _______________________________________________________________________________________

Note 1: Maximum specification is limited by automated test equipment.
Note 2: To ensure best performance, finish reading the data and wait t

BR

before starting a new acquisition.

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= +5V ±5%, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AVDD, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.)

TIMING CHARACTERISTICS (Figures 1 and 2)

(AVDD= +5V ±5V, DVDD= +2.7V to AVDD, external reference = +4.096V, C

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AVDD, C

LOAD

= 20pF, TA= T

MIN

to T

MAX

.)

DD

DD

AVDD

SHDN

DVDD

External reference,
135ksps

Internal reference,
135ksps

Shutdown mode, I
digital input = DV

Standby mode 3.7 mA

POWER SUPPLIES

Analog Supply Voltage AV

Digital Supply Voltage DV

Analog Supply Current I

Shutdown Supply Current I

Digital Supply Current I

Power-Supply Rejection AVDD = DVDD = +4.75V to +5.25V 3.5 LSB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Maximum Sampling Rate f

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

EOC Fall to CS Fall t

CS Rise to EOC Rise t

Bus Relinquish Time t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

S AM P LE ( M A X )

ACQ

CONV

CSH

CSL

DS

DH

DO

DV

EOC

BR

(Note 2) 40 ns

(Note 2)

DVDD = +4.75V to +5.25V 40

DVDD = +2.7V to +5.25V 60

DVDD = +4.75V to +5.25V 40

DVDD = +2.7V to +5.25V 80

DVDD = +4.75V to +5.25V 40

DVDD = +2.7V to +5.25V 80

DVDD = +4.75V to +5.25V 40

DVDD = +2.7V to +5.25V 80

MAX1187 2.9

MAX1179/MAX1189 4.0 5.3

MAX1187 3.8

MAX1179/MAX1189 5.2 6.2

+ I

AVDD

DD

DVDD = +4.75V to +5.25V 40

DV

DVDD

or 0V

= +2.7V to +5.25V 60

DD

(Note 1),

4.75 5.25 V

2.70 5.25 V

0.5 5 µA

0.75 mA

2µs

0ns

0ns

135 ksps

4.7 µs

mA

ns

ns

ns

ns

ns

MAX1179/MAX1187/MAX1189

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

Bipolar Analog Input Range

_______________________________________________________________________________________ 5

Typical Operating Characteristics

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

REF

= 10µF, C

REFADJ

= 0.1µF, V

REFADJ

= AVDD, C

LOAD

= 20pF, TA= T

MIN

to

T

MAX

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

INL vs. CODE

2.5

2.0

1.5

1.0

0.5

0

INL (LSB)

-0.5

-1.0

-1.5

-2.0

-2.5
0

CODE

600002000010000 30000 5000040000

MAX1179/87/89 toc01

DNL (LSB)

2.5

2.0

1.5

1.0

0.5

0

-0.5

-1.0

-1.5

-2.0

-2.5

DNL vs. CODE

CODE

600002000010000 30000 50000400000

4.80

4.75

4.70

MAX1179/87/89 toc02

4.65

4.60

4.55

SUPPLY CURRENT (mA)

4.50

4.45

4.40

SUPPLY CURRENT (AVDD + DVDD)

vs. TEMPERATURE

5.25V

5.0V

4.75V

f

= 135ksps

SAMPLE

SHUTDOWN MODE BETWEEN

-40 80

TEMPERATURE (°C)

CONVERSIONS

6040-20 0 20

MAX1179/87/89 toc03

SUPPLY CURRENT (AVDD + DVDD)

vs. SAMPLE RATE

10

STANDBY MODE

1

0.1

0.01

SUPPLY CURRENT (mA)

0.001

0.0001

0.01 1000

SHUTDOWN MODE

SAMPLE RATE (ksps)

GAIN ERROR

vs. TEMPERATURE

0.20

0.15

0.10

0.05

0

-0.05

GAIN ERROR (%FSR)

-0.10

-0.15

-0.20

-40 0-20 20 40 60 80

TEMPERATURE (°C)

SHUTDOWN CURRENT (AVDD + DVDD)

5.0

vs. TEMPERATURE

NO CONVERSIONS

4.5

4.0

MAX1179/87/89 toc04

3.5

3.0

2.5

2.0

1.5

1.0

SHUTDOWN SUPPLY CURRENT (µA)

0.5

0

1001010.1

-40 80

TEMPERATURE (°C)

6040-20 0 20

MAX1179/87/89 toc05

OFFSET ERROR vs. TEMPERATURE

10

MAX1189

8

6

4

2

0

-2

OFFSET ERROR (mV)

-4

-6

-8

-10

-40 80

TEMPERATURE (°C)

MAX1179/87/89 toc06

6040-20 0 20

INTERNAL REFERENCE

4.136

4.126

4.116

MAX1179/87/89 toc07

4.106

4.096

4.086

INTERNAL REFERENCE (V)

4.076

4.066

4.056

-40 0-20 20 40 60 80

vs. TEMPERATURE

TEMPERATURE (°C)

MAX1179/87/89 toc08

-100

MAGNITUDE (dB)

-120

-140

-160

-180

0

f

SAMPLE

-20

-40

-60

-80

060

FFT AT 1kHz

= 135ksps

MAX 1179/87/89 toc09

4020

FREQUENCY (kHz)