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MAX9644, MAX9645, MAX9646
Low-Power Comparators with Precision Reference in 4-Bump UCSP
Deliver Ultra-Small, Low-Power Comparator Solutions for Mobile Devices
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Status
Active: In Production.
Description
The MAX9644/MAX9645/MAX9646 are small, single comparators, ideal for a wide variety of portable electronics applications such as cell phones, media players, and notebooks that have extremely tight board space and power constraints. These comparators are offered in both a miniature 4-bump UCSP™ package with a 1mm x 1mm footprint (as small as two 0402 resistors) and a 5-pin SOT23 package.
The ICs feature an input voltage range of -0.3V to +5.5V, independent of supply voltage. These devices maintain high impedance at the inputs even when powered down (VCC or VREF = 0V). They also feature internal filtering to provide high RF immunity.
The ICs have an internal 0.2V reference. These devices feature either a push-pull or an open-drain output. They consume only 700nA (max) supply current and operate down to VCC = 1V over the extended -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX9644EVKIT, MAX9645EVKIT, MAX9646EVKIT
Key Features
- Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP
- Footprint = Two 0402 Resistors
- Also Available in a 5-Pin SOT23 Package
- Ultra-Low Operating Current (700nA max)
- -0.3V to +5.5V Input Voltage Range
- Internal 0.2V Reference Trimmed to 1% Accuracy
- 15µs Propagation Delay
- -40°C to +85°C Extended Temperature Range
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Applications/Uses
- Cell Phones
- Electronic Toys
- Notebook Computers
- Portable Media Players
- Portable Medical Devices
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Key Specifications:
| Comparators + Reference |
| Part Number |
Comp-
arators |
Thresh.
(V) |
Internal Ref. Accuracy
(%) |
tPD
(µs) |
VSUPPLY
(V) |
VSUPPLY
(V) |
ICC
(µA) |
Prog. Hyst. |
Logic Out |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
min |
max |
max |
max w/pins |
See Notes |
| MAX9644 |
1 |
0.2 |
1 |
15 |
1 |
5.5 |
1.1 |
No |
Open Drain |
-40 to +85 |
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1.1 |
$0.49 @1k |
| MAX9645 |
Open Drain |
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$0.49 @1k |
| MAX9646 |
Push-Pull |
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$0.49 @1k |
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See All Comparators + Reference (47)
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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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More Information
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Information Index
Document Ref.: 19-5803
Rev 1;
2011-11-02
This page last modified: 2011-11-02
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