The AD8021ARZ is a Low Noise High Speed Voltage Feedback Amplifier that can be used in 16-bit resolution systems. It is designed to have both low voltage and low current noise (2.1nV/√Hz typical and 2.1pA/√Hz typical) while operating at the lowest quiescent supply current (7mA at ±5V) among today’s high speed, low noise op amps. An output disable pin allows further reduction of the quiescent supply current to 1.3mA. The AD8021 allows the user to choose the gain bandwidth product that best suits the application. It is also capable of driving a 75R line with ±3V video signals. The AD8021 is both technically superior and priced considerably less than comparable amps drawing much higher quiescent current. It is a high speed general-purpose amplifier, ideal for a wide variety of gain configurations and can be used throughout a signal processing chain and in control loops.

• Low noise
• Constant bandwidth from G = -1 to G = -10
• High speed
• 34mW or 6.7mA Typical low power for 5V supply
• Low distortion
• 1mV Maximum input offset voltage
• 0.5µV/°C Input offset voltage drift

The HCPL-7800-000E is an Isolation Amplifier for current sensing in electronic motor drives. The high CMR capability of isolation amplifier provides the precision and stability needed to accurately monitor motor current in high noise motor control environments, providing for smoother control in various types of motor control applications. In a typical implementation the motor current flows through an external resistor and the resulting analogue voltage drop is sensed by the amplifier. A differential output voltage is created on the other side of the amplifier optical isolation barrier. It is designed to ignore very high common-mode transient slew rates.

• 15kV/µs Common-mode rejection at VCM = 1000V
• Advanced sigma-delta A/D converter technology
• Compact and auto-insertable
• Fully differential circuit topology

The LTC1540IMS8#PBF is an ultralow nano-power single Comparator with built-in reference. The comparator features include less than 0.6µA supply current over the commercial temperature range, a 1.182V±2% reference, programmable hysteresis and TTL/CMOS outputs that sink and source current. The reference output can drive a bypass capacitor of up to 0.01µF without oscillation. The comparator operates from a single 2 to 11V supply or a dual ±1 to ±5.5V supply. Comparator hysteresis is easily programmed by using two resistors and the HYST pin. The comparator input operates from the negative supply to within 1.3V of the positive supply. The comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally occur when the comparator changes logic states, power supply glitches are eliminated.

• Reference output drives 0.01µF capacitor
• Input voltage range includes the negative supply
• Reference output sources Up to 1mA
• 60µs Propagation delay with 10mV overdrive
• No crowbar current
• 40mA Continuous source current
• Pin-compatible with LTC1440, MAX921, MAX931
• LTADV Part marking