SP Amp Transconductance Amplifier Single ±5.25V 14-Pin PDIP N

The MAX435 are high-speed, wideband trans conductance amplifiers (WTAs) with true differential, high-impedance inputs. Their unique architecture provides accurate gain without negative feedback, eliminating closed-loop phase shift a primary cause of circuit oscillation in conventional high-speed amplifiers. The output of the WTA is a current that is proportional to the applied differential input voltage, providing inherent short-circuit protection for the outputs. Circuit gain is set by the ratio of two impedances and an internally set current gain factor (K). The current output and the absence of negative feedback allow the differential output MAX435 to achieve a bandwidth of 275MHz, an 800V/µs slew rate, and a 1% settling time of 18ns to a 0.5V step input. The amplifiers offer exceptional wideband common-mode rejection, with a CMRR of 53dB at 10MHz. 3000/ input offset voltage offers a level of DC precision rarely found in high-speed op amps. Unlike current-feedback amplifiers, the MAX435 have fully symmetrical, high-impedance inputs that tolerate wide differential input voltages without destructive failure or amplifier saturation, virtually eliminating overload recovery time. The unique performance features of these WTAs suit them for a wide variety of applications, such as high-speed instrumentation amplifiers and wideband, high-gain band pass amplifiers. And, with its differential output, the MAX435 can be used in high-speed differential line driver and receiver applications.

• 275MHz Bandwidth
• 850V/µs Slew Rate
• 18ns Settling Time to 1%
• 53dB CMRR at 10MHz
• Low Noise, 7nV/vHz at 1kHz
• No Feedback
• True Differential High-Impedance Inputs
• Shutdown Capability: 450µA