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LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR

SLCS148 ­ SEPTEMBER 2005

LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
www.ti.com
SLCS148 - SEPTEMBER 2005
FEATURES
D PACKAGE (TOP VIEW)
1OUT 2OUT VCC 2IN - 2IN + 1IN - 1IN +
3OUT 4OUT GND 4IN + 4IN - 3IN + 3IN -
DESCRIPTION / ORDERING INFORMATION
The LP2901 is a low-power quadruple differential comparator. The device consists of four independent voltage comparators designed specifically to operate from a single power supply and, typically, to draw 60-µA drain current over a wide range of voltages. Operation from split power supplies also is possible, and the ultra-low power-supply drain current is independent of the power-supply voltage. Applications include limit comparators, simple analog-to-digital converters, pulse generators, square-wave generators, time-delay generators, voltage-controlled oscillators, multivibrators, and high-voltage logic gates. The LP2901 is designed specifically to interface with the CMOS logic family. The ultra-low power-supply current makes these products desirable in battery-powered applications. The LP2901 is characterized for operation from -40°C to 85°C. ORDERING INFORMATION
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com / sc / package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 - SEPTEMBER 2005
www.ti.com
SCHEMATIC DIAGRAM (EACH COMPARATOR)
VCC 0.2 µA
0.2 µA
Absolute Maximum Ratings (1)
over operating free-air temperature range (unless otherwise noted)
Dissipation Ratings
www.ti.com
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 - SEPTEMBER 2005
Recommended Operating Conditions
Electrical Characteristics
Output leakage current VID ICC (1) (2) (3) (4) Differential input voltage Supply current
Full range is -40°C to 125°C. VIO is measured over the full common-mode input voltage range. Because of the p-n-p input stage, the direction of the current is out of the device. This current essentially is constant (i.e., independent of the output state). No loading change exists on the reference or input lines as long as the common-mode input voltage range is not exceeded. The output sink current is a function of the output voltage. These devices have a bimodal output section that allows them to sink (via a Darlington connection) large currents at output voltages greater than 1.5 V and smaller currents at output voltages less than 1.5 V.
Switching Characteristics
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 - SEPTEMBER 2005
www.ti.com
APPLICATION INFORMATION
Figure 1 shows the basic configuration for using the LP2901 comparator. Figure 2 shows the diagram for using it as a CMOS driver.
Figure 1. Basic Comparator
1 / 4 LP2901
1 / 4 SN54 / 74LS00 or 1 / 4 SN54 / 74ALS1000A
Figure 3. Output-Section Schematic Diagram
www.ti.com
LP2901-Q1 LOW-POWER QUAD DIFFERENTIAL COMPARATOR
SLCS148 - SEPTEMBER 2005
PACKAGE OPTION ADDENDUM
www.ti.com
12-Sep-2006
PACKAGING INFORMATION
Orderable Device LP2901IDRQ1
Status (1) ACTIVE
Package Type SOIC
Package Drawing D
Pins Package Eco Plan (2) Qty 14 2500 Pb-Free (RoHS)
Lead / Ball Finish CU NIPDAU
MSL Peak Temp (3) Level-2-250C-1 YEAR / Level-1-235C-UNLIM
The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device.
Addendum-Page 1
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