Details, datasheet, quote on part number: HA4600CB
PartHA4600CB
CategoryAnalog & Mixed-Signal Processing
Description480MHz, Video Buffer With Output Disable
CompanyIntersil Corporation
DatasheetDownload HA4600CB datasheet
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Features, Applications

The is a very wide bandwidth, unity gain buffer ideal for professional video switching, HDTV, computer monitor routing, and other high performance applications. The circuit features very low power dissipation (105mW Enabled, 1mW Disabled), excellent differential gain and phase, and very high off isolation. When disabled, the output is switched to a high impedance state, making the HA4600 ideal for routing matrix equipment and video multiplexers. The HA4600 also features fast switching and symmetric slew rates. A typical application for the HA4600 is interfacing Intersil's wide range of video crosspoint switches. For applications requiring a tally output (enable indicator), please refer to the HA4201 data sheet.

Features

Micro Package Available. SOT-23 Low Power Dissipation. 105mW Symmetrical Slew Rates. 1700V/s 0.1dB Gain Flatness. 250MHz Off Isolation (100MHz). 85dB Differential Gain and Phase. 0.01%/0.01 Degrees High ESD Rating. >1800V TTL Compatible Enable Input Improved Replacement for GB4600

Applications
Professional Video Switching and Routing Video Multiplexers

PART NUMBER (BRAND) HA4600CP TEMP. RANGE (oC) to 70 PACKAGE 8 Ld PDIP 8 Ld SOIC 8 Ld SOIC Tape and Reel PKG. NO. E8.3 M8.15

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright Intersil Corporation 2000

Voltage Between V+ and V-. 12V Input Voltage. VSUPPLY Digital Input Current (Note 2). 25mA Output Current. 20mA ESD Rating Human Body Model (Per MIL-STD-883 Method 3015.7). 1800V

Thermal Resistance (Typical, Note 1) JA (oC/W) PDIP Package. 130 SOIC Package. 170 SOT-23 Package. 210 Maximum Junction Temperature (Die). 175oC Maximum Junction Temperature (Plastic Package). 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC (SOIC and SOT-23 - Lead Tips Only)

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES: JA is measured with the component mounted on an evaluation PC board in free air. If an input signal is applied before the supplies are powered up, the input current must be limited to this maximum value.

Electrical Specifications VSUPPLY = 10k, VEN = 2.0V, Unless Otherwise Specified

PARAMETER DC SUPPLY CHARACTERISTICS Supply Voltage Supply Current (VOUT = 0V) VEN = 2V VEN = 2V VEN = 0.8V VEN = 0.8V ANALOG DC CHARACTERISTICS Output Voltage Swing without Clipping VOUT = VIN VIO 70 0 Output Current Input Bias Current Output Offset Voltage Output Offset Voltage Drift (Note 3) SWITCHING CHARACTERISTICS Turn-On Time Turn-Off Time DIGITAL DC CHARACTERISTICS Input Logic High Voltage Input Logic Low Voltage EN Input Current AC CHARACTERISTICS Insertion Loss -3dB Bandwidth = 21pF Full dB MHz to 4V Full A ns Full 25 Full A mV V/oC Full mA A TEST CONDITIONS TEMP. (oC) MIN TYP MAX UNITS

Electrical Specifications VSUPPLY = 10k, VEN = 2.0V, Unless Otherwise Specified (Continued)

PARAMETER 0.1dB Flat Bandwidth TEST CONDITIONS = 21pF Input Resistance Input Capacitance Enabled Output Resistance Disabled Output Capacitance Differential Gain (Note 3) Differential Phase (Note 3) Off Isolation VEN 1VP-P, 100MHz, VEN = 21pF Total Harmonic Distortion (Note 3) Disabled Output Resistance NOTE: 3. This parameter is not tested. The limits are guaranteed based on lab characterization, and reflect lot-to-lot variation. TEMP. (oC) 25 Full 25 Full MIN 200 TYP MAX 0.02 UNITS MHz pF % Degrees dB V/s % M

The is a unity gain buffer that is optimized for high performance video applications. The output disable function makes it ideal for the matrix element in small, high input-tooutput isolation switchers and routers. This buffer contains no feedback or gain setting resistors, so the output is a true high impedance load when the IC is disabled (EN = 0). The HA4600 also excels as an input buffer for routers with a large number of outputs (i.e. each input must connect to a large number of outputs) and delivers performance superior to most video amplifiers at a fraction of the cost. As an input buffer, the HA4600's low input capacitance and high input resistance provide excellent video terminations when used with an external 75 resistor.

The frequency response of this circuit depends greatly on the care taken in designing the PC board. The use of low inductance components such as chip resistors and chip capacitors is strongly recommended, while a solid ground plane is a must! Attention should be given to decoupling the power supplies. A large value (10F) tantalum in parallel with a small value (0.1F) chip capacitor works well in most cases. Keep input and output traces as short as possible, because trace inductance and capacitance can easily become the performance limiting items.

Most applications utilizing the HA4600 require a series output resistor, RS, to tune the response for the specific load capacitance, CL, driven. Bandwidth and slew rate degrade as CL increases (as shown in the Electrical Specification table), so give careful consideration to component placement to minimize trace length. As an example, -3dB bandwidth decreases to 160MHz for 0. In big matrix configurations where CL is large, better


 

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