MAX148 - Maxim Integrated

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

MAX148
Manufacturer

Maxim Integrated
ChipWorker Part#

CW481514936
RoHS

Lead free / RoHS Compliant
Description

2.7V to +5.25V, Low-Power, 8Channel, Serial 10Bit ADCs
Documentation

Datasheet

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MAX148 Specifications

Attribute	Attribute Value

Part Number	MAX148
Manufacturer	Maxim Integrated
ChipWorker Part#	CW481514936
Documentation	Datasheet
Case/Package	SSOP-20
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RoHS	RoHS Compliant

Product Description

Description
The MAX148/MAX149 10-bit data-acquisition systems combine an 8-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 sample to 133ksps. Both devices’ 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 MAX148/MAX149 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.
The MAX149 has an internal 2.5V reference, while the MAX148 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 MAX148/MAX149, 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 MAX148/MAX149 are available in 20-pin PDIP and 20-pin SSOP packages.
For 4-channel versions of these devices, see the MAX1248/MAX1249 data sheet.

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