HA-4905

Features:

• Fast Response Time . . . . . . . . . . . . . . . . . . . . 130ns
• Low Offset Voltage . . . . . . . . . . . . . . . .. . . . . 2.0mV
• Low Offset Current . . . . . . . . . . . . . . . . . . . . . .10nA
• Single or Dual Voltage Supply Operation
• Selectable Output Logic Levels
• Active Pull-Up/Pull-Down Output Circuit. No External




Application

• Threshold Detector
• Zero Crossing Detector
• Window Detector
• Analog Interfaces for Microprocessors
• High Stability Oscillators
• Logic System Interfaces




Pinout






Specifications

Supply Voltage (Between V+ and V- Terminals) . . . . . . . . . . . . 33V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .15V
Voltage Between V_LOGIC+ and V_LOGIC-. . . . . . . . . . . . . . . . . . .18V
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Power Dissipation (Notes 1, 2)
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:
1. Maximum power dissipation, including output load, must be designed to maintain the junction temperature below 175oC for ceramic packages,and below 150oC for plastic packages.

2. Total Power Dissipation (T.P.D.) is the sum of individual dissipation contributions of V+, V- and VLOGIC shown in curves of Power Dissipation vs Supply Voltages (see Performance Curves). The calculated T.P.D. is then located on the graph of Maximum Allowable Package Dissipation vs Ambient Temperature to determine ambient temperatureoperating limits imposed by the calculated T.P.D. (See Performance Curves). For instance, the combination of +15V, -15V, +5V, 0V (V+, V-, V_LOGIC+, V_LOGIC-) gives a T.P.D. of 350mW, the combination +15V, -15V, +15V, 0V gives a T.P.D. of 450mW.

3. _JA is measured with the component mounted on an evaluation PC board in free air.

Description

The HA-4900 series are monolithic, quad, precision comparators offering fast response time, low offset voltage, low offset current and virtually no channel-to-channel crosstalk for applications requiring accurate, high speed, signal level detection. These comparators can sense signals at ground level while being operated from either a single +5V supply (digital systems) or from dual supplies (analog networks) up to ±15V. The HA-4900 series contains a unique current driven output stage which can be connected to logic system supplies (VLOGIC+ and VLOGIC-) to make the output levels directly compatible (no external components needed) with any standard logic or special system logic levels. In combination analog/digital systems, the design employed in the HA-4900 series input and output stages prevents troublesome ground coupling of signals between analog and digital portions of the system. These comparators combination of features make them ideal components for signal detection and processing in data acquisition systems, test equipment and microprocessor/analog signal interface networks. For military grade product, refer to the HA-4902/883 data sheet.