Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - AD converter (ADC) External , Internal TSSOP 28

General Description

The MAX1165/MAX1166 16-bit, low-power, successive-

approximation analog-to-digital converters (ADCs) fea-

ture automatic power-down, factory-trimmed internal

clock, and a 16-bit wide (MAX1165) or byte wide

(MAX1166) parallel interface. The devices operate from

a single +4.75V to +5.25V analog supply and a +2.7V

to +5.25V digital supply.

The MAX1165/MAX1166 use an internal 4.096V refer-

ence or an external reference. The MAX1165/MAX1166

consume only 1.8mA at a sampling rate of 165ksps with

external reference and 2.7mA with internal reference.

AutoShutdown™ reduces supply current to 0.1mA at

10ksps.

The MAX1165/MAX1166 are ideal for high-perfor-

mance, battery-powered, data-acquisition applications.

Excellent dynamic performance and low power con-

sumption in a small package make the MAX1165/

MAX1166 ideal for circuits with demanding power con-

sumption and space requirements.

The 16-bit wide MAX1165 is available in a 28-pin

TSSOP package and the byte wide MAX1166 is avail-

able in a 20-pin TSSOP package. Both devices are

available in either the 0°C to +70°C commercial, or the

-40°C to +85°C extended temperature range.

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Applications

Temperature Sensor/Monitor

Industrial Process Control

I/O Boards

Data-Acquisition Systems

Cable/Harness Tester

Accelerometer Measurements

Digital Signal Processing

Features

♦ 16-Bit Wide (MAX1165) and Byte Wide (MAX1166)

Parallel Interface

♦ High Speed: 165ksps Sample Rate

♦ Accurate: ±2.5 LSB INL, 16 Bit No Missing Codes

♦ 4.096V, 25ppm/°C Internal Reference

♦ External Reference Range: +3.8V to +5.25V

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

♦ +2.7V to +5.25V Digital Supply Voltage

♦ Low Supply Current

1.8mA (External Reference)

2.7mA (Internal Reference)

0.1µA (10ksps, External Reference)

♦ Small Footprint

28-Pin TSSOP Package (16-Bit Wide)

20-Pin TSSOP Package (Byte Wide)

MAX1165/MAX1166

Low-Power, 16-Bit Analog-to-Digital Converters

with Parallel Interface

________________________________________________________________

Maxim Integrated Products

MAX1165

0.1µF0.1µF

+5V ANALOG +5V DIGITAL

ANALOG INPUT AIN

R/C

EOC

REF

D0–D15

REFADJ

RESET

AGND DGND

0.1µF

4.7µF

µP DATA

BUS

Typical Operating Circuit

19-2551; Rev 2; 8/08

For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Pin Configurations and Functional Diagram appear at end of

data sheet.

PART TEMP RANGE

PIN-

PACKAGE

INL

MAX1165ACUI 0°C to +70°C 28 TSSOP ±2

MAX1165BCUI 0°C to +70°C 28 TSSOP ±2

MAX1165CCUI 0°C to +70°C 28 TSSOP ±4

MAX1165AEUI -40°C to +85°C 28 TSSOP ±2.5

MAX1165BEUI -40°C to +85°C 28 TSSOP ±2.5

MAX1165CEUI -40°C to +85°C 28 TSSOP ±4

Ordering Information continued at end of data sheet.

Ordering Information

Summary of content (15 pages)

PAGE 1
9-2551; Rev 2; 8/08 Low-Power, 16-Bit Analog-to-Digital Converters with Parallel Interface The MAX1165/MAX1166 16-bit, low-power, successiveapproximation analog-to-digital converters (ADCs) feature automatic power-down, factory-trimmed internal clock, and a 16-bit wide (MAX1165) or byte wide (MAX1166) parallel interface. The devices operate from a single +4.75V to +5.25V analog supply and a +2.7V to +5.25V digital supply. The MAX1165/MAX1166 use an internal 4.096V reference or an external reference.
PAGE 2
MAX1165/MAX1166 Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface ABSOLUTE MAXIMUM RATINGS AVDD to AGND .........................................................-0.3V to +6V DVDD to DGND ........................................-0.3V to (AVDD + 0.3V) AGND to DGND.....................................................-0.3V to +0.3V AIN, REF, REFADJ to AGND....................-0.3V to (AVDD + 0.3V) CS, HBEN, R/C, RESET to DGND ............................-0.
PAGE 3
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface (AVDD = DVDD = +5V, external reference = +4.096V, CREF = 4.7µF, CREFADJ = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
MAX1165/MAX1166 Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface ELECTRICAL CHARACTERISTICS (continued) (AVDD = DVDD = +5V, external reference = +4.096V, CREF = 4.7µF, CREFADJ = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 5
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface (AVDD = +4.75V to +5.25V, DVDD = +2.7V to AVDD, external reference = +4.096V, CREF = 4.7µF, CREFADJ = 0.1µF, CLOAD = 20pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA= +25°C.) PARAMETER SYMBOL CS Rise to EOC Rise CONDITIONS tEOC Bus Relinquish Time (Note 6) tBR MIN TYP MAX VDVDD = 4.75V to 5.25V 40 VDVDD = 2.7V to 5.25V 80 VDVDD = 4.75V to 5.25V 40 VDVDD = 2.7V to 5.
PAGE 6
Typical Operating Characteristics (continued) (AVDD = DVDD = +5V, external reference = +4.096V, CREF = 4.7µF, CREFADJ = 0.1µF, TA = +25°C, unless otherwise noted.) GAIN ERROR vs. TEMPERATURE 0.015 400 200 0 -200 -400 0.010 80 70 0.005 0 60 50 40 -0.005 30 -0.010 -600 20 -800 -0.015 10 -1000 -0.020 0 -40 -20 0 20 40 80 60 -40 -20 TEMPERATURE (°C) 0 20 40 60 -40 SFDR (dB) THD (dB) -30 -50 -60 -70 -80 -90 -100 1 0.1 10 100 MAX1165/66 toc11 SAMPLE RATE = 165ksps 0.
PAGE 7
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface PIN NAME FUNCTION MAX1165 MAX1166 MAX1165 MAX1166 1 1 D8 D4/D12 Three-State Digital Data Output 2 2 D9 D5/D13 Three-State Digital Data Output 3 3 D10 D6/D14 Three-State Digital Data Output 4 4 D11 D7/D15 5 — D12 — Three-State Digital Data Output 6 — D13 — Three-State Digital Data Output 7 — D14 — Three-State Digital Data Output 8 — D15 — Three-State Digital Data Output (MSB) Three-State Digital
PAGE 8
MAX1165/MAX1166 Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface Analog Input DVDD The equivalent input circuit is shown in Figure 4. A switched capacitor digital-to-analog converter (DAC) provides an inherent T/H function. The single-ended input is connected between AIN and AGND.
PAGE 9
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface REF +5V DIGITAL TRACK ZERO CSWITCH 3pF AVDD ANALOG INPUT µP DATA BUS DVDD HOLD AGND D0–D7 OR D8–D15 AIN CAPACITIVE DAC AIN 0.1µF 0.1µF CDAC = 32pF RIN 800Ω HOLD TRACK AUTOZERO RAIL MAX1166 EOC R/C CS HIGH BYTE HBEN REF Figure 4. Equivalent Input Circuit REFADJ AGND DGND 0.1µF 4.7µF LOW BYTE Figure 3.
PAGE 10
MAX1165/MAX1166 Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface ACQUISITION CS CONVERSION DATA OUT CS REF POWERDOWN BIT CONVERSION ACQUISITION R/C R/C EOC EOC REF AND BUFFER REF AND BUFFER DATA OUT REF POWERDOWN BIT Figure 6. Selecting Shutdown Mode Figure 5. Selecting Standby Mode Selecting Standby or Shutdown Mode The MAX1165/MAX1166 have a selectable standby or low-power shutdown mode.
PAGE 11
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface For optimal performance, buffer the reference through an op amp and bypass REF with a 1µF capacitor. Consider the MAX1165/MAX1166s’ equivalent input noise (38µVRMS) when choosing a reference. Reading a Conversion Result EOC is provided to flag the microprocessor when a conversion is complete. The falling edge of EOC signals that the data is valid and ready to be output to the bus. D0–D15 are the parallel outputs of the MAX1165/ MAX1166.
PAGE 12
MAX1165/MAX1166 Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface Layout, Grounding, and Bypassing For best performance, use printed circuit boards. Do not run analog and digital lines parallel to each other, and do not lay out digital signal paths underneath the ADC package. Use separate analog and digital ground planes with only one point connecting the two ground systems (analog and digital) as close to the device as possible.
PAGE 13
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface HBEN* REFADJ AVDD AGND DVDD DGND 5kΩ REFERENCE OUTPUT REGISTERS 16 OR 8* 16 OR 8* D0–D15 OR D0/D7–D8/D15* REF AIN CAPACITIVE DAC MAX1165 MAX1166 AGND RESET** SUCCESSIVEAPPROXIMATION REGISTER AND CONTROL LOGIC CLOCK CS EOC R/C * BYTE WIDE (MAX1166 ONLY) **16-BIT WIDE (MAX1165 ONLY) Ordering Information (continued) TEMP RANGE PINPACKAGE INL MAX1166ACUP 0°C to +70°C 20 TSSOP ±2 MAX1166BCUP 0°C to +70°C 20 TSSOP ±2
PAGE 14
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface MAX1165/MAX1166 Pin Configurations TOP VIEW D8 1 28 D7 D4/D12 1 20 D3/D11 D9 2 27 D6 D5/D13 2 19 D2/D10 D10 3 26 D5 D6/D14 3 18 D1/D9 D11 4 25 D4 D7/D15 4 17 D0/D8 MAX1166 24 D3 R/C 5 23 D2 EOC 6 D14 7 22 D1 AVDD 7 14 CS D15 8 21 D0 AGND 8 13 HBEN D12 5 D13 6 MAX1165 R/C 9 20 DVDD AIN 9 EOC 10 19 DGND AGND 10 AVDD 11 18 CS AGND 12 17 RESET AIN 13 16 DVDD 15 DGND 12 REF 11 REFADJ TSSOP 16 REF
PAGE 15
Low-Power, 16-Bit Analog-to-Digital Converter with Parallel Interface PAGES CHANGED REVISION NUMBER REVISION DATE 0 7/02 Initial release 1 2/07 Modified specifications due to inclusion of reference buffer 1–4, 13, 15 2 8/08 Modified specifications for GBD at -40°C 1, 2, 3, 13 DESCRIPTION — Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.