HS-1412RH

• Electrically Screened to SMD # 5962-96834
• QML Qualified per MIL-PRF-38535 Requirements
• MIL-PRF-38535 Class V Compliant
• User Programmable For Closed-Loop Gains of +1, -1 or +2 Without Use of External Resistors
• Standard Operational Amplifier Pinout
• Low Supply Current . . . . . . . . . . . . 5.9mA/Op Amp (Typ)
• Excellent Gain Accuracy . . . . . . . . . . . . . . . 0.99V/V (Typ)
• Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . .340MHz (Typ)
• Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . .1155V/s (Typ)
• High Input Impedance . . . . . . . . . . . . . . . . . . . 1M (Typ)
• Excellent Gain Flatness (to 50MHz). . . . . . ±0.02dB (Typ)
• Fast Overdrive Recovery . . . . . . . . . . . . . . . . <10ns (Typ)
• Total Gamma Dose. . . . . . . . . . . . . . . . . . . . 300kRAD(Si)
• Latch Up . . . . . . . . . . . . . . . . . . . . . None (DI Technology)

The HS-1412RH features a novel design which allows the user to select from three closed loop gains, without any external components. The result is a more flexible product, fewer part types in inventory, and more efficient use of board space. Implementing a quad, gain of 2, cable driver with this IC eliminates the eight gain setting resistors, which frees up board space for termination resistors.

Like most newer high performance amplifiers, the HS-1412RH is a current feedback amplifier (CFA). CFAs offer high bandwidth and slew rate at low supply currents, but can be difficult to use because of their sensitivity to feedback capacitance and parasitics on the inverting input (summing node). The HS-1412RH eliminates these concerns by bringing the gain setting resistors on-chip. This yields the optimum placement and value of the feedback resistor, while minimizing feedback and summing node parasitics. Because there is no access to the summing node, the PCB parasitics do not impact performance at gains of +2 or -1 (see "Unity Gain  Considerations" for discussion of parasitic impact on unity gain performance).

The HS-1412RH's closed loop gain implementation provides better gain accuracy, lower offset and output impedance, and better distortion compared with open loop buffers

The HS-1412RH is a radiation hardened quad closed loop buffer featuring user programmable gain and high speed performance. Manufactured on Intersil's proprietary complementary bipolar UHF-1 (DI bonded wafer) process, this device offers wide -3dB bandwidth of 340MHz, very fast slew rate, excellent gain flatness and high output current. These devices are QML approved and are processed and screened in full compliance with MIL-PRF-38535.

A unique feature of the pinout HS-1412RH allows the user to select a voltage gain of +1, -1, or +2, without the use of any external components. Gain selection is accomplished via connections to the inputs, as described in the "Application  Information" section. The result is a more flexible product,  fewer part types in inventory, and more efficient use of board space.

Compatibility with existing op amp pinouts HS-1412RH provides flexibility  to upgrade low gain amplifiers, while decreasing component count. Unlike most buffers, the standard pinout provides an  pgrade path should a higher closed loop gain be needed at a future date.

Specifications for Rad Hard QML devices are controlledby the Defense Supply Center in Columbus (DSCC). The SMD numbers listed here must be used when ordering. Detailed Electrical Specifications for these devices are contained in SMD 5962-96834. A "hot-link" about HS-1412RH is provided on our homepage for downloading.