LM2485NA datasheet(3/8 Pages) NSC

Part #	LM2485NA

Description	220V Triple Bias Clamp with G1 Blank Amplifier

Download	8 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

Logo

3 / 8 page

Test Circuits

Figure 2 shows the test circuit used to evaluate the LM2485 clamp amplifier. A high impedance voltmeter (>10M

Ω) is used to

measure the DC voltages at the V

OUT output pins. Figure 3 shows the test circuit used to evaluate the LM2485 blanking amplifier.

An oscilloscope and a scope probe are used to measure the pulse amplitude at the VB

OUT output pin.

Typical Performance Characteristics

(V

CC = 220V, VBB =8V, VBIN = 0V–5V Logic Pulse at 8.6% duty cycle, Pin 12 floated, Pin 13 grounded, Test Circuits - Figure 2

and Figure 3)

20103434

FIGURE 2. Clamp Amplifier Test Circuit

20103437

FIGURE 3. Blanking Amplifier Test Circuit

20103435

FIGURE 4. V

OUT vs. VIN

20103438

FIGURE 5. VB

OUT (40VP-P)

www.national.com

3

Similar Part No. - LM2485NA

Manufacturer	Part #	Datasheet	Description
National Semiconductor ...	LM248	388Kb / 15P	Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)
STMicroelectronics	LM248	139Kb / 9P	FOUR UA741 QUAD BIPOLAR OPERATIONAL AMPLIFIERS November 1997
Texas Instruments	LM248	399Kb / 12P	[Old version datasheet] QUADRUPLE OPERATIONAL AMPLIFIERS
STMicroelectronics	LM248	97Kb / 5P	QUAD BIPOLAR OPERATIONAL AMPLIFIERS
Texas Instruments	LM248-N	1Mb / 22P	[Old version datasheet] LM148/LM248/LM348 Quad 741 Op Amps

Manufacturer	Part #	Datasheet	Description
National Semiconductor ...	LM2479	78Kb / 4P	120V Triple Bias Clamp
	LM2480	84Kb / 4P	80V Triple Bias Clamp
	LM2483	706Kb / 8P	180V Triple Bias Clamp
	LM2481	451Kb / 8P	145V Triple Bias Clamp
	LM2457	839Kb / 14P	Monolithic Triple 7.5nS CRT Driver With Integrated Clamp and G1 Blanking
	LM2453	823Kb / 14P	Monolithic Triple 6 nS CRT Driver With Integrated Clamp and G1 Blanking
	LM2476	1Mb / 12P	Monolithic Triple Channel 6.5 ns High Gain CRT Driver and Bias Clamp
Texas Instruments	LM2476	1Mb / 16P	[Old version datasheet] Monolithic Triple Channel 6.5 ns High Gain CRT Driver and Bias Clamp
National Semiconductor ...	LMV111	337Kb / 9P	Operational Amplifier with Bias Network
National Semiconductor ...	LM2425	1Mb / 11P	220V Monolithic Triple Channel 10 MHz CRT DTV Driver