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MAX186, MAX188

Low-Power, 8-Channel, Serial 12-Bit ADCs

See MAX146 and MAX1246 for 3V Applications

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX186/MAX188 are 12-bit data-acquisition systems that combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface together with high conversion speed and ultra-low power consumption. The devices operate with a single +5V supply or dual ±5V supplies. The analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface directly connects to SPI™, QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX186/MAX188 use either the internal clock or an external serial-interface clock to perform successive-approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used.

The MAX186 has an internal 4.096V reference while the MAX188 requires an external reference. Both parts have a reference-buffer amplifier that simplifies gain trim.

The MAX186/MAX188 provide a hard-wired active-low SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the devices, and the quick turn-on time allows the MAX186/MAX188 to be shut down between every conversion. Using this technique of powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates.

The MAX186/MAX188 are available in 20-pin DIP and SO packages, and in a shrink small-outline package (SSOP), that occupies 30% less area than an 8-pin DIP. For applications that call for a parallel interface, see the MAX180/MAX181 data sheet. For anti-aliasing filters, consult the MAX274/MAX275 data sheet.

Data Sheet

Download	Rev 4	(PDF, 256kB)
E-Mail

An evaluation kit is available: MAX186EVKIT

Key Features

8-Channel Single-Ended or 4-Channel Differential Inputs
Single +5V or ±5V Operation
Low Power:
- 1.5mA (operating mode)
- 2µA (power-down mode)
Internal Track/Hold, 133kHz Sampling Rate
Internal 4.096V Reference (MAX186)
SPI-, QSPI-, MICROWIRE-, TMS320-Compatible 4-Wire Serial Interface
Software-Configurable Unipolar or Bipolar Inputs
20-Pin DIP, SO, SSOP Packages
Evaluation Kit Available

Applications/Uses

Automated Test Equipment (ATE)
Battery-Powered Applications
Data Acquisition
High-Accuracy Process Control
Medical Instruments
Portable Data Logging
Robotics

Key Specifications:

Precision ADCs (< 5Msps)

Part Number

Resolution
(bits)

Input Chan.

Conv. Rate
(ksps)

Data Bus
(bits)

Diff/S.E. Input

Internal V_REF
(V)

External V_REF
(V)

Unipolar V_IN
(V)

Bipolar V_IN
(±V)

SINAD
(dB)

THD
(dB)

SFDR
(dB)

DNL
(±LSB)

Package/Pins

Budgetary Price

ADC

max

nominal

min

max

See Notes

MAX186

133

SPI

Both

4.096

2.5

5.25

4.096

2.048

-80

MAX188

See All Precision ADCs (< 5Msps) (423)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

Application Notes

Tutorial 801		Frequently Asked Questions about Data Converters
Application Note 1108		Understanding Single-Ended, Pseudo-Differential and Fully-Differential ADC Inputs
Application Note 1918		12-Bit ADC Upgrades µC's Internal 8-Bit ADC
Tutorial 4294		Differential Gain and Phase—Why Measure It, if You Cannot See It?

Product Guides

Signal Chain (PDF)

Reliability Reports

Reliability Report:	MAX186.pdf MAX188.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Devices: 151-173 / 173

<-- Previous 1 2 3 4 Next -->

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX188CMJP			Active	CDIP(N);20 pin;218.9 mm² Outline Drawing:21-0045 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: J20-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX188DC/D			Active	DICE; Land Pattern: Not Available		See data sheet
MAX188DCAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-1*	0°C to +70°C	See data sheet
MAX188DCAP+			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX188DCAP+T			Active	SSOP;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX188DCAP-T			Active	SSOP;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX188DCPP			Active	PDIP(N);20 pin;217.1 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P20-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX188DCPP+			Active	PDIP(N);20 pin;217.1 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P20+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX188DCWP			Active	SOIC(W);20 pin;137.3 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX188DCWP+			Active	SOIC(W);20 pin;137.3 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX188DCWP+T			Active	W.SO;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX188DCWP-T			Active	W.SO;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX188DEAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-1*	-40°C to +85°C	See data sheet
MAX188DEAP+			Active	SSOP;20 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX188DEAP+T			Active	SSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX188DEAP-T			Active	SSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX188DEPP			Active	PDIP(N);20 pin;217.1 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P20-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX188DEPP+			Active	PDIP(N);20 pin;217.1 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P20+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX188DEWP			Active	SOIC(W);20 pin;137.3 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX188DEWP+			Active	SOIC(W);20 pin;137.3 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX188DEWP+T			Active	SOIC(W);20 pin;137.3 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX188DEWP-T			Active	W.SO;20 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX188DMJP			Active	CDIP(N);20 pin;218.9 mm² Outline Drawing:21-0045 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: J20-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis

Devices: 151-173 / 173

<-- Previous 1 2 3 4 Next -->

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Notes and Comments

+5V data-acquisition system with serial interface

Similar Products by Function

MAX146, MAX147	+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX1246, MAX1247	+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
See All Precision ADCs (< 5Msps) (430 Products)

Evaluation Kits

MAX186EVKIT

Evaluation Kit/Evaluation System for the MAX186

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