CA3040

The RCA CA3040 is a monolithic silicon integrated circuit designed to meet the requirements of a wide variety of applications requiring high gain and wide bandwidth. The cascode-connected differential amplifier achieves a double-ended gain of 37 dB with a typical 3 d8 bandwidth of 55 MHz.Emitter-Follower input and output stages provide the desirable high input impedance and output impedance for coupling to other circuits.

The CA3040 has the following features include:(1)high differential push-pull voltage gain-37 dB typ.; (2)single-ended voltage gain-31 dB typ.; (3)wide [3dB] bandwidth-55 MHz typ.; (4)balanced input and output; (5)high input resistance -150 k typ.; (6)low output resistance -125 typ.The CA3040 includes two biasing options, allowing the user to optimize his design over the entire military temperature range of -55 to +125°C. Bias Mode A yields a substantially constant voltage at the output terminals for applications using DC coupling to succeeding stages or requiring maximum dynamic range overthetemperature range. DC output voltage varies less than 0.1 volt (typically) over the entire temperature range while gain varies ±2 dB.

The absolute maximum ratings of the CA3040 are:(1)disspation:450mW;(2)storage temperature range:-65 to +150°C;(3)operating temperature range:-55 to +125°C.The  CA3040 is designed to provide  flexibility in the selection of  power  supply  configurations and to provide the circuit designer the choice between two modes of temperature-compensated performance.Mode A,which  provides constant DC output voltage, is recommended for most applications.The control of the operating point provided by this mode maintains the dynamic range  of the device while gain variation over most of the range is less than 11 dB. Mode B provides constant gain for applications where this consideration is critical,but  will exhibit a reduction  of dynamic range at the temperature extremes.

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