Video signal switcher BA76N / BA76F The BA76N and BA76F are three-channel analog multiplexers with built-in mute, 6dB amplifier and 7Ω driver. The ICs designed for use in video cassette recorders, and feature a large dynamic range and wide operating frequency range. Sync-tip clamp inputs make this an ideal switch for video signals. Applications Video cassette recorders and televisions Features ) -input / -output switches. ) Built-in 6dB amplifier and 7Ω driver. ) Built-in mute. ) Sync-tip clamp inputs. ) Wide operating supply voltage range (.V.0V, BA76N) (.V 9.V, BA76F). 6) Low power consumption (00mW Typ.). 7) Excellent frequency characteristics (0MHz, 0dB Typ.). 8) Wide dynamic range (.VP-P Typ.). 9) Low interchannel crosstalk ( 6dB Typ., f =.MHz). Block diagram BA76N BA76F MUTE 6dB Amp 7Ω Driver IN MUTE 8 VOUT LA 6dB 7Ω 7 LOGIC LB LOGIC 6 IN IN GND 6 7 8 IN LA LB IN GND IN VOUT Truth table L A L (OPEN) L B L (OPEN) OUT IN L (OPEN) H IN H L (OPEN) IN H H MUTE
BA76N / BA76F Absolute maximum ratings (Ta = C) Parameter Symbol Limits Unit Power supply voltage. / 0.0 V Power dissipation Pd 900 / 0 mw Operating temperature Topr + 7 C Storage temperature Tstg + C BA76N. BA76F. Reduced by 9.0mW for each increase in Ta of C over C. Reduced by.mw for each increase in Ta of C over C. Equivalent circuits CLAMP INPUT OUTPUT IN 00 OUT Output impedance: Ω [Typ.].µA 00µA LA / LB 0k LA / LB 00 0k k
BA76N / BA76F Electrical characteristics (unless otherwise noted, Ta = V and = V) Parameter Symbol Min. Typ. Max. Unit Conditions Operating voltage..0 V BA76F is Max.9.V Supply current ICC 0.0 8. ma Maximum output level Vom.0. VP-P f = khz, THD = 0.% Voltage gain GV. 6.0 6. db f = MHz, VIN =.0VP-P Interchannel crosstalk 6 db f =.MHz, VIN =.0VP-P Frequency characteristic Cf.0 0.0 db f = 0MHz / MHz, VIN =.0VP-P L pin switch level A VTH-A.0.0.0 V L pin switch level B VTH-B.0.0.0 V Not designed for radiation resistance. Measurement circuit MUTE 6dB Amp 7Ω Driver 000µ + Ω 7Ω V P P Logic 6 7 8 SW SW SW 7µF + A 0.0µF µf µf µf OSC 0Ω µf OSC 0Ω µf OSC 0Ω µf SW SW Fig.
BA76N / BA76F Measurement conditions Parameter Current dissipation Maximum output level Voltage gain Interchannel crosstalk Frequency characteristic L pin switching level IN IN IN IN IN IN IN IN IN IN IN MUTE IN IN IN MUTE IN MUTE IN IN IN LA LB Symbol SW SW SW SW SW ICC Vom Vom Vom GV GV GV Gf Gf Gf VTH VTH Switch settings Measurement method Ammeter f = khz THD = 0.% f = MHz, V = VP-P f =.MHz, V = VP-P f = 0MHz / f = MHz, V = VP-P : Connect a distortion meter to the output, and input a f = khz sine wave. Adjust the input level until the output distortion is 0.%. This output voltage at this time multiplied by is the maximum output level Vom (VP-P). : Input a VP-P, MHz sine wave. The voltage gain is given by GV = 0 log (VOUT / VIN) + 6. : Input a VP-P,.MHz sine wave. The interchannel crosstalk is given by = 0 log (VOUT / VIN). : Input VP-P, MHz and 0MHz sine waves. The frequency characteristic is given by Gf = 0 log (VOUT (f = 0MHz) / VOUT (f = MHz)). : Input a VP-P, MHz sine wave. Reduce the L pin voltage from. The L pin switching level (VTH) is the L pin voltage at which the VOUT level drops below 0mVP-P. Electrical characteristic curves 0 OUTPUT VOLTAGE: VOUT (VP-P) = V = 9V = V VOLTAGE GAIN: Cf (db) 0 CROSSTALK: (db) 0 0 0 60 0 0 INPUT VOLTAGE: VIN (VP-P) Fig. VIN vs. VOUT (f = khz) 00k 00k M M 0M 0M 00M FREQUENCY: f (Hz) Fig. Frequency characteristics 80 00k 00k M M 0M 0M 00M FREQUENCY: f (Hz) Fig. Interchannel crosstalk Operation notes The output impedance is approximately Ω. Therefore, to ensure output matching, connect an external resistor of Ω.
BA76N / BA76F External dimensions (Units: mm) BA76N BA76F 9. ± 0..8 ± 0..0 ± 0. 8 0. ± 0..8 ± 0.. ± 0.. 8. 0.6 0. ± 0. 0.8 6. ± 0.. ± 0.. ± 0. 0. ± 0.. 0..7 0. ± 0. 0.Min. 0. SIP8 SOP8
Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex (Item 6) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix-Rev.0