MAX159BCUA+T Maxim Integrated, MAX159BCUA+T Datasheet

MAX159BCUA+T

Manufacturer Part Number

MAX159BCUA+T

Description

Analog to Digital Converters - ADC 10-Bit 108ksps 5.25V Precision ADC

Manufacturer

Maxim Integrated

Datasheet

1.MAX159BEUAT.pdf (16 pages)

Specifications of MAX159BCUA+T

Rohs

yes

Number Of Channels

Architecture

SAR

Conversion Rate

108 KSPs

Resolution

10 bit

Input Type

Pseudo-Differential

Snr

Interface Type

QSPI, Serial (SPI, Microwire)

Operating Supply Voltage

2.7 V to 5.25 V

Maximum Operating Temperature

+ 70 C

Mounting Style

SMD/SMT

Package / Case

uMAX

Maximum Power Dissipation

727 mW

Minimum Operating Temperature

0 C

Number Of Converters

Voltage Reference

5.25 V

Current page: 1 of 16
Download datasheet (238Kb)

The MAX157/MAX159 low-power, 10-bit analog-to-digi-

tal converters (ADCs) are available in 8-pin µMAX and

DIP packages. Both devices operate with a single

+2.7V to +5.25V supply and feature a 7.4µs succes-

sive-approximation ADC, automatic power-down, fast

wake-up (2.5µs), an on-chip clock, and a high-speed,

3-wire serial interface.

Power consumption is only 3.2mW (V

maximum sampling rate of 108ksps. At slower through-

put rates, the 0.2µA automatic shutdown further

reduces power consumption.

The MAX157 provides 2-channel, single-ended opera-

tion and accepts input signals from 0 to V

MAX159 accepts pseudo-differential inputs ranging

from 0 to V

through the 3-wire serial interface, which is SPI™,

QSPI™, and MICROWIRE™ compatible.

Excellent dynamic performance and low power, com-

bined with ease of use and a small package size, make

these converters ideal for battery-powered and data

acquisition applications, or for other circuits with

demanding power-consumption and space require-

ments. For pin-compatible 12-bit upgrades, see the

MAX144/MAX145 data sheet.

Battery-Powered Systems

Portable Data Logging

Isolated Data Acquisition

Process-Control Monitoring

MICROWIRE is a trademark of National Semiconductor Corp.

19-1388; Rev 0; 11/98

SPI and QSPI are trademarks of Motorola, Inc.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

TOP VIEW

( ) ARE FOR MAX159 ONLY.

CH0 (CH+)

CH1 (CH-)

REF

108ksps, Serial 10-Bit ADCs in 8-Pin µMAX

GND

. An external clock accesses data

________________________________________________________________ Maxim Integrated Products

General Description

MAX/DIP

MAX157

MAX159

Pin Configuration

Instrumentation

Test Equipment

Medical Instruments

System Supervision

Applications

SCLK

DOUT

CS/SHDN

REF

= +3.6V) at the

REF

+2.7V, Low-Power, 2-Channel,

. The

* Contact factory for availability.

MAX157ACUA

MAX157BCUA

MAX157ACPA

MAX157BCPA

MAX157AEUA

MAX157BEUA

MAX157AEPA

MAX157BEPA

MAX157AMJA

MAX157BMJA

MAX159ACUA

MAX159BCUA

MAX159ACPA

MAX159BCPA

MAX159AEUA

MAX159BEUA

MAX159AEPA

MAX159BEPA

MAX159AMJA

MAX159BMJA

Single-Supply Operation (+2.7V to +5.25V)

Two Single-Ended Channels (MAX157)

Single Pseudo-Differential Channel (MAX159)

Low Power

Internal Track/Hold

108ksps Sampling Rate

SPI/QSPI/MICROWIRE-Compatible 3-Wire

Serial Interface

Space-Saving 8-Pin µMAX Package

Pin-Compatible 12-Bit Upgrades Available

0.9mA (at 108ksps, +3V)

100µA (at 10ksps, +3V)

10µA (at 1ksps, +3V)

<0.2µA (power-down mode)

PART

-40°C to +85°C

-55°C to +125°C

-40°C to +85°C

-55°C to +125°C

0°C to +70°C

RANGE

TEMP.

Ordering Information

PIN-

PACKAGE

8 µMAX

8 Plastic DIP

8 µMAX

8 Plastic DIP

8 CERDIP*

8 µMAX

8 Plastic DIP

8 µMAX

8 Plastic DIP

8 CERDIP*

Features

(LSB)

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

±0.5

±1

INL

Related parts for MAX159BCUA+T

MAX159BCUA+T Summary of contents

Page 1

... ARE FOR MAX159 ONLY. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. +2.7V, Low-Power, 2-Channel, Single-Supply Operation (+2 ...

Page 2

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX ABSOLUTE MAXIMUM RATINGS V to GND. .............................................................-0.3V to +6V DD CH0, CH1 (CH+, CH-) to GND...................-0. REF to GND ................................................-0. Digital Inputs to GND ...............................................-0.3V to ...

Page 3

Serial 10-Bit ADCs in 8-Pin µMAX ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V 2.5V, 0.1µF capacitor at REF REF CH- = GND for MAX159 MIN PARAMETER SYMBOL CONVERSION ...

Page 4

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.25V 2.5V, 0.1µF capacitor at REF REF CH- = GND for MAX159 MIN ...

Page 5

Serial 10-Bit ADCs in 8-Pin µMAX (V = +3.0V 2.5V, 0.1µF capacitor at REF REF MAX159 +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. SUPPLY VOLTAGE 1500 REF DD R ...

Page 6

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX (V = +3.0V 2.5V, 0.1µF capacitor at REF REF MAX159 +25°C, unless otherwise noted.) A GAIN ERROR vs. SUPPLY VOLTAGE 0.2 0.1 0 -0.1 ...

Page 7

Serial 10-Bit ADCs in 8-Pin µMAX PIN NAME 1 V Positive Supply Voltage, +2.7V to +5.25V DD 2 CH0 (CH+) Analog Input, MAX157: Single-Ended (CH0); MAX159: Differential (CH+). 3 CH1 (CH-) Analog Input, MAX157: Single-Ended (CH1); MAX159: Differential (CH-). ...

Page 8

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX The capacitive digital-to-analog converter (DAC) adjusts during the remainder of the conversion cycle to restore node ZERO to 0V within the limits of 10-bit resolution. This action is equivalent to ...

Page 9

Serial 10-Bit ADCs in 8-Pin µMAX Selecting Clock Mode To start the conversion process on the MAX157/ MAX159, pull CS/SHDN low. At CS/SHDN’s falling edge, the part wakes up, the internal T/H enters track mode, and a conversion begins. ...

Page 10

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX Output Data Format Table 1 illustrates the 16-bit, serial data-stream output format for both the MAX157 and MAX159. The first three bits are always logic high (including the EOC bit ...

Page 11

Serial 10-Bit ADCs in 8-Pin µMAX Table 1. Serial Output Data Stream for Internal and External Clock Mode SCLK CYCLE 1 DOUT (Internal Clock) EOC DOUT (External Clock) 1 etc. Therefore, SNR is computed by taking the ratio of ...

Page 12

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX I/O SCK MISO V SPI DD SS Figure 8a. SPI Connections SCLK CS/SHDN DOUT* SAMPLING INSTANT *WHEN CS/SHDN IS HIGH, DOUT = HIGH -Z Figure 8c. SPI/MICROWIRE ...

Page 13

Serial 10-Bit ADCs in 8-Pin µMAX 1 SCLK CS/SHDN DOUT SAMPLING INSTANT *WHEN CS/SHDN IS HIGH, DOUT = HIGH - Z Figure 9b. QSPI Interface Timing Sequence (CPOL = CPHA = SCLK DOUT CS/SHDN MAX157 MAX159 ...

Page 14

Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX Table 2. Detailed SSPCON Register Content MAX157/MAX159 CONTROL BIT SETTINGS WCOL Bit 7 X SSPOV Bit 6 X SSPEN Bit 5 1 CKP Bit 4 0 SSPM3 Bit 3 0 ...

Page 15

Serial 10-Bit ADCs in 8-Pin µMAX Chip Information TRANSISTOR COUNT: 2,058 SUBSTRATE CONNECTED TO GND ______________________________________________________________________________________ +2.7V, Low-Power, 2-Channel, Package Information 15 ...

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 16 © ...

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