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ALFA 1100SK2, K1100SK2, KP1100SK2 Analog Signal Sample-and-Hold ICs Datasheet
Technical datasheet for ALFA 1100SK2, K1100SK2, and KP1100SK2 analog signal sample-and-hold integrated circuits, covering electrical parameters, pin configurations, and operational diagrams.
Table of contents
Product Overview
The ALFA 1100SK2, K1100SK2, and KP1100SK2 are high-precision analog signal sample-and-hold integrated circuits. These devices are designed to capture instantaneous values of an input signal upon receiving a command at the control input and maintain a constant output voltage with high accuracy for a specified duration.
Key Features and Specifications
- External Storage Capacitor: Required for operation.
- Sampling Time: 7 µs (at 0.1% accuracy with 1000 pF capacitor).
- Aperture Delay: Maximum 180 ns.
- Input Voltage Range: ±5 V.
- Supply Voltage: Nominal ±12 V for 1100SK2A, K1100SK2, KP1100SK2; ±15 V for 1100SK2B.
- Output Protection: Short-circuit protection included.
- Compatibility: Control input is compatible with TTL/CMOS logic.
Functional Operation
When the internal switch is closed, the output of the first operational amplifier (OY1) is set such that the output voltage matches the input voltage, minus the offset voltage of OY1. The diodes and internal circuitry ensure that the offset caused by the switch and the second operational amplifier (OY2) is minimized. When the switch is opened via the control signal, the output voltage remains constant. Internal resistors and diodes prevent OY1 saturation, which reduces transition time when the switch is closed.
Operating Conditions and Safety
The devices are available in two grades (A and B) based on supply voltage requirements. It is critical to operate within the specified "Permissible Operating Mode" ranges. Exceeding the "Limit Mode" values can cause permanent damage to the integrated circuits. Ensure proper connection of the storage capacitor and adherence to the specified supply voltages for the selected grade.
Contact Information
Manufacturer: Joint Stock Company ALFA, Riga, Latvia. Website: www.alfarzpp.lv, Email: [email protected].
Official resources from the manual
Manufacturer information
Joint Stock Company ALFA
Practical help
Common problems
Output voltage drift or instability
Ensure the external storage capacitor is correctly connected and of the specified value (e.g., 1nF). Check that the control signal frequency and voltage levels are within the specified operating range.
Permanent damage to the IC
Verify that supply voltages (UП1, UП2) and input voltages (UВХ) do not exceed the values listed in the 'Limit Mode' section of the datasheet.
Before use
- Identify the specific grade (A or B) of your IC to determine the correct supply voltage (±12V or ±15V).
- Verify the pinout configuration for your specific package type (3101.8-1 or 2101.8-1).
- Ensure an appropriate external storage capacitor is available for connection to pin 6.
- Check that the control signal logic levels are compatible with TTL/CMOS standards.
- Confirm that the load resistance is within the permissible range (5-10 kOhm depending on grade).
Specs in practice
- Sampling Time (tВ)
- The time required for the output to accurately track the input signal to within 0.1%.
- Aperture Delay (tА.ЗД)
- The time delay between the control command and the actual holding of the signal.
- Supply Voltage (UП)
- The required dual-polarity power supply; must be strictly maintained to avoid damage.
Model compatibility
- Control input is compatible with standard TTL and CMOS logic levels.
- Device performance is specified for a temperature range of 0 to 70 °C.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.