Maxim > Products > Analog-to-Digital Converters > MAX1227, MAX1229, MAX1231

MAX1227, MAX1229, MAX1231

12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX1227	Active: In Production. See Ordering Information for details.
MAX1229	Active: In Production. See Ordering Information for details.
MAX1231	Active: In Production. See Ordering Information for details.

Description

The MAX1227/MAX1229/MAX1231 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX1231 has 16 input channels, the MAX1229 has 12 input channels, and the MAX1227 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +3V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port.

The MAX1231 is available in 28-pin 5mm x 5mm TQFN with exposed pad and 24-pin QSOP packages. The MAX1227/MAX1229 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range.

Complete the Signal Chain! Recommended Op Amps

Data Sheet

Download	Rev 6	(PDF, 232kB)
E-Mail

An evaluation kit is available: MAX11633EVSYS, MAX11635EVSYS, MAX1231EVSYS

Key Features

Internal Temperature Sensor (±0.7°C Accuracy)
16-Entry First-In/First-Out (FIFO)
Analog Multiplexer with True Differential Track/Hold
- 16-, 12-, 8-Channel Single Ended
- 8-, 6-, 4-Channel True Differential (Unipolar or Bipolar)
Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Overtemperature
Scan Mode, Internal Averaging, and Internal Clock
Low-Power Single +3V Operation
- 1mA at 300ksps
Internal 2.5V Reference or External Differential Reference
10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface
Space-Saving 28-Pin 5mm x 5mm TQFN Package

Applications/Uses

Data Acquisition Systems
Data Logging
Industrial Control Systems
Instrumentation
Patient Monitoring
System Supervision

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)

SNR
(dB)

SINAD
(dB)

THD
(dB)

SFDR
(dB)

DNL
(±LSB)

INL
(±LSB)

Package/Pins

Budgetary Price

ADC

max

nominal

min

max

See Notes

MAX1227

300

SPI

Both

2.5

3.6

2.5

1.25

-82

MAX1229

MAX1231

See All Precision ADCs (< 5Msps) (417)

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

Functional Diagram

More Information

For 10-bit Applications, please see MAX1027, MAX1029, MAX1031

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2851 Rev 6; 2011-06-02
This page last modified: 2011-06-02