LM2917N
| Parameters | |
|---|---|
| Mount | Through Hole |
| Mounting Type | Through Hole |
| Package / Case | 14-DIP (0.300, 7.62mm) |
| Number of Pins | 14 |
| Packaging | Tube |
| JESD-609 Code | e0 |
| Pbfree Code | no |
| Part Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 14 |
| ECCN Code | EAR99 |
| Type | Frequency to Voltage |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| HTS Code | 8542.39.00.01 |
| Subcategory | Analog Special Function Converters |
| Technology | BIPOLAR |
| Terminal Position | DUAL |
| Number of Functions | 1 |
| Supply Voltage | 12V |
| Terminal Pitch | 2.54mm |
| Frequency | 5kHz |
| Base Part Number | LM2917 |
| Pin Count | 14 |
| Output Voltage | 8.3V |
| Temperature Grade | INDUSTRIAL |
| Max Supply Voltage | 28V |
| Min Supply Voltage | 12V |
| Bandwidth | 10 kHz |
| Linearity | ±0.3% |
| Height | 3.3mm |
| Length | 19.05mm |
| Width | 6.35mm |
| Radiation Hardening | No |
| REACH SVHC | No SVHC |
| RoHS Status | Non-RoHS Compliant |
| Lead Free | Contains Lead |
LM2917N Description
The LM2917N is a monolithic frequency-to-voltage converter with a high gain op-amp designed to operate a relay, lamp, or another load when the input frequency reaches or exceeds a selected rate. The tachometer uses a charge pump technique and offers frequency doubling for low-ripple, full-input protection in two versions (8-pin LM2907 and LM2917), and its output swings to the ground for a zero frequency input.
The LM2917N is fully compatible with the tachometer and has a floating transistor as its output. This feature allows either a ground or supply referred load of up to 50 mA. The collector may be taken above VCC up to a maximum VCE of 28 V.
LM2917N Features
Ground Referenced Tachometer Input Interfaces Directly With Variable Reluctance Magnetic Pickups
Op Amp Has Floating Transistor Output
50-mA Sink or Source to Operate Relays, Solenoids, Meters, or LEDs
Frequency Doubling For Low Ripple
Tachometer Has Built-In Hysteresis With Either Differential Input or Ground Referenced Input
+0.3% Linearity (Typical)
Ground-Referenced Tachometer is Fully Protected From Damage Due to Swings Above Vcc and Below Ground
LM2917N Applications
Speedometers
Over- and Under-Speed Sensing
Frequency-to-Voltage Conversion (Tachometer)
Speed Governors
Cruise Control
Breaker Point Dwell Meters
Hand-Held T tachometers
Automotive Door Lock Control
Clutch Control
Horm Control
Touch or Sound Switches