MAX1248, MAX1249 +2.7V to +5.25V, Low-Power, 4-Channel, Serial, 10-Bit ADCs in QSOP-16

Description

The MAX1248/MAX1249 10-bit data-acquisition systems combine a 4-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and their analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1248/MAX1249 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

The MAX1248 has an internal 2.5V reference, while the MAX1249 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage adjustment range.

These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX1248/MAX1249, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.

The MAX1248/MAX1249 are available in a 16-pin DIP and a very small QSOP that occupies the same board area as an 8-pin SO.

For 8-channel versions of these devices, see the MAX148/MAX149 datasheet.

Key Features

Applications/Uses

4-Channel Single-Ended or 2-Channel Differential Inputs
Single +2.7V to +5.25V Operation
Internal 2.5V Reference (MAX1248)
Low Power:
- 1.2mA (133ksps, +3V supply)
- 54µA (1ksps, +3V supply)
- 1µA (power-down mode)
SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
Software-Configurable Unipolar or Bipolar Inputs
16-Pin QSOP Package (same area as 8-pin SO)

	Battery-Powered Applications
	Data Acquisition
	Medical Instruments
	Pen Digitizers
	Portable Data Logging
	System Supervision

Key Specifications: Precision ADCs (< 5Msps)

Part Number

ADC Resolution (Bits)

Input Channels

Conv. Rate (ksps)

Max. Conv. Time (µs)

Data Bus (Bits)

Ref. (V)

Diff. In

Supply Voltage (V)

Typ. Supply Current (mA)

Typ. Power (mW)

Low Power Mode

Standby Mode

EV-Kit

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX1248

133

Serial

Ext
Int +2.5

Yes

3
3.3

1.2

3.6

Yes

Ceramic DIP/16
PDIP/16
QSOP/16

-40 to +85
-55 to +125
0 to +70

$3.40 @ 1k

MAX1249

Ext

3
3.3
5

0.8

$3.95 @ 1k

See All Precision ADCs (< 5Msps) (301)

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.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX1249xxxE.pdf

		Request Reliability Report for:

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-52 of 52

MAX1248

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1248ACPE+

0°C to +70°C

See data sheet

MAX1248BEPE+

-40°C to +85°C

See data sheet

MAX1248AEPE+

-40°C to +85°C

See data sheet

MAX1248AMJE

Ceramic DIP;16 pin;
Dwg: 21-0045A (PDF)
Use pkgcode/variation: J16-3*

-55°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BMJE

Ceramic DIP;16 pin;
Dwg: 21-0045A (PDF)
Use pkgcode/variation: J16-3*

-55°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248ACPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BCPE+

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248BCPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248AEPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BEPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BCEE-T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BCEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248ACEE-T

0°C to +70°C

See data sheet

MAX1248BCEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

0°C to +70°C

See data sheet

MAX1248ACEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

0°C to +70°C

See data sheet

MAX1248ACEE+T

0°C to +70°C

See data sheet

MAX1248ACEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248BCEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248AEEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248AEEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248BEEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248BEEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1248AEEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

-40°C to +85°C

See data sheet

MAX1248AEEE-T

-40°C to +85°C

See data sheet

MAX1248BEEE-T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1248BEEE

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1249BMJE

Ceramic DIP;16 pin;
Dwg: 21-0045A (PDF)
Use pkgcode/variation: J16-3*

-55°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249AMJE

Ceramic DIP;16 pin;
Dwg: 21-0045A (PDF)
Use pkgcode/variation: J16-3*

-55°C to +125°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249ACPE+

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BCPE+

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249ACPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249BCPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249BEPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249AEPE

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249AEPE+

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BEPE+

PDIP;16 pin;
Dwg: 21-0043D (PDF)
Use pkgcode/variation: P16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BCEE-T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

0°C to +70°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249BCEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BCEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249ACEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

0°C to +70°C

See data sheet

MAX1249ACEE+T

0°C to +70°C

See data sheet

MAX1249ACEE-T

0°C to +70°C

See data sheet

MAX1249BCEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

0°C to +70°C

See data sheet

MAX1249ACEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

0°C to +70°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BEEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+5*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249BEEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+5*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249AEEE+T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1249AEEE

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

-40°C to +85°C

See data sheet

MAX1249AEEE-T

QSOP;13 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-1*

-40°C to +85°C

See data sheet

MAX1249BEEE

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249BEEE-T

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16-5*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1249AEEE+

QSOP;16 pin;
Dwg: 21-0055H (PDF)
Use pkgcode/variation: E16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

Related Products

MAX148, MAX149 +2.7V to +5.25V Low-Power 8-Channel Serial 10-Bit ADCs
MAX157, MAX159 +2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX
MAX1246, MAX1247 +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16