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MAX548A, MAX549A, MAX550A
+2.5V to +5.5V, Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package
Dual, Serial, Voltage-Output DACs in a µMAX Package
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Status
Active: In Production.
Description
The MAX548A/MAX549A/MAX550A serial, 8-bit voltage-output digital-to-analog converters (DACs) operate from a single +2.5V to +5.5V supply. Their ±1LSB TUE specification is guaranteed over temperature. Operating current (supply current plus reference current) is typically 75µA per DAC with VDD = 2.5V. In shutdown, the DAC is disconnected from the reference, reducing current drain to less than 1µA. The MAX548A/MAX549A allow each DAC to be shut down independently.
The 10MHz, 3-wire serial interface is compatible with SPI™/QSPI™ and Microwire™ interface standards. Double-buffered inputs provide flexibility when updating the DACs; the input and DAC registers can be updated individually or simultaneously.
The MAX548A is a dual DAC with an asynchronous load input; it uses VDD as the reference input. The MAX549A is a dual DAC with an external reference input. The MAX550A is a single DAC with an external reference input and an asynchronous load input.
The MAX548A/MAX549A/MAX550A's low power consumption and small µMAX® and DIP packages make these devices ideal for portable and battery-powered applications.
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Data Sheet
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Key Features
- +2.5V to +5.5V Single-Supply Operation
- ±1LSB (max) TUE
- Power-On Reset Clears All Registers to Zero
- Low Operating Current:
- 150µA (MAX548A/MAX549A, VREF = +2.5V)
- 75µA (MAX550A, VREF = +2.5V)
- 1µA Shutdown Mode
- 10MHz, 3-Wire Serial Interface Compatible with SPI/QSPI and Microwire
- µMAX Package-50% Smaller than 8-Pin SO
- Independent Shutdown of DACs (MAX548A/MAX549A)
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Applications/Uses
- Battery-Powered Applications
- Comparator-Level Settings
- Digital Gain and Offset Control
- GaAs Amp Bias Control
- General Purpose
- VCXO Control
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Key Specifications:
| Precision DACs (4-12 Bits) |
| Part Number |
Power-On Reset State |
Resolution
(bits) |
Channels |
Output Type |
Reference |
Interface |
Supply Range
(V) |
Supply Range
(V) |
Oper. Temp.
(°C) |
Budgetary Price |
| min |
max |
See Notes |
| MAX548A |
Zero-Scale |
8 |
2 |
Voltage- Unbuffered |
Ext. |
Serial - SPI |
2.5 |
5.5 |
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$2.35 @1k |
| MAX549A |
Zero-Scale |
2 |
$2.35 @1k |
| MAX550A |
- |
1 |
$1.97 @1k |
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See All Precision DACs (4-12 Bits) (268)
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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.
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Diagram
Functional Diagram
Didn't Find What You Need?
Information Index
Document Ref.: 19-1206
Rev 0;
1997-03-01
This page last modified: 2009-08-17
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