Electronic Components Datasheet Search |
|
ALD2321DC Datasheet(PDF) 2 Page - Advanced Linear Devices |
|
ALD2321DC Datasheet(HTML) 2 Page - Advanced Linear Devices |
2 / 8 page ALD2321A/ALD2321B Advanced Linear Devices 2 ALD2321 BLOCK DIAGRAM PIN # SYMBOL FUNCTION SIGNAL PROPAGATION ALD2321 PIN IDENTIFICATION 1 OUT1 COMPARATOR 1 SINK OUTPUT OUTPUT 2 OUT1H COMPARATOR 1 SOURCE OUTPUT OUTPUT 3 -IN1 COMPARATOR 1 INVERTING INPUT INPUT 4 +IN1 COMPARATOR 1 NON-INVERTING INPUT INPUT 5 GND GROUND / V- SUPPLY - 6VE11 - VOS E-Trim COMPARATOR 1 INPUT 7VE12 + VOS E-Trim COMPARATOR 1 INPUT 8 N/C No Connect/Do Not connect externally - 9 N/C No Connect/Do Not connect externally - 10 VE22 +VOS E-Trim COMPARATOR 2 INPUT 11 VE21 - VOS E-Trim COMPARATOR 2 INPUT 12 +IN2 COMPARATOR 2 NON-INVERTING INPUT INPUT 13 -IN2 COMPARATOR 2 INVERTING INPUT INPUT 14 OUT2H COMPARATOR 2 SOURCE OUTPUT OUTPUT 15 OUT2 COMPARATOR 2 SINK OUTPUT OUTPUT 16 V+ V+ SUPPLY - The Source Output can source up to 2 mA and can be used to drive the base terminal of an external NPN bipolar device or the gate of a N-channel MOSFET device. Alternatively, the two outputs, Source Output and Sink Output, can be connected together to form a push-pull output which has the combined output capabilities of both channels. In the dual complementary output mode, each comparator can be used to drive separate loads. Due to the complementary nature of the two outputs, only one output is active at any a given time, except for a limited crossover time. When OUT (sink output) is active ON, the OUT pin is sinking current and the OUTH pin is OFF and in high impedance mode. Con- versely, if OUTH pin is ON and sourcing current, OUT pin is OFF. To configure push-pull output, simply connect OUT (sink output) pin to OUTH pin. Since each voltage comparator has its own complementary outputs, each comparator can be configured to have a different output type. For example, one comparator output can be connected as Open Drain output while the other comparator can be wired as push-pull output. If used to drive capacitive loads, the output DC current levels are at a very low level, at essentially leakage current levels, which can be a power saving feature. The ALD2321A/ ALD2321B/ ALD2321 can detect and resolve very low voltage levels at high speed, with little or no overdrive voltage. Compared with other voltage comparator devices that require 100 mV overdrive voltages, or multiple stage circuits that include input preamp, etc., the ALD2321A/ ALD2321B/ ALD2321 can perform all input to output functions in one device with minimal delay time and with as low as a 1mV signal. The ALD2321A/ ALD2321B/ ALD2321 is supplied with 4 external e-trim pins, VE11, VE12, VE21 and VE22. These pins are used for trimming of the voltage comparator offset voltages GENERAL DESCRIPTION (cont'd) at the factory, and normally should be left open unconnected. However, in some cases these pins can be used as positive/ negative feedback pins, since these pins have a positive/ negative factor on the offset voltage. For example, see TYPI- CAL APPLICATIONS section titled "Voltage Comparator With Output Feedback to Provide Hysteresis." In printed circuit board layout, it is suggested that these pins, along with no connect (N/C) pins 8 and 9, be surrounded with ground traces to prevent any possible crosstalk and noise coupling from other signal sources. Although not required for most applications, if necessary, small valued capacitors of approximately 1000 pF can be mounted at these pins to ground to further reduce noise. For information on customized trimming under different biasing and power supply conditions, please contact factory. (1) OUT1 NONINVERTING INPUT +IN 1 (4) INVERTING INPUT -IN 1 (3) (16) V+ (2) OUT1H VE11 GND (6) (7) VE12 (5) (15) OUT2 VE21 INVERTING INPUT -IN 2 (13) (14) OUT2H VE22 (11) (10) N/C (8) (9) N/C NONINVERTING INPUT +IN 2 (12) - + - + |
Similar Part No. - ALD2321DC |
|
Similar Description - ALD2321DC |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |