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LM2907MX/NOPB ACTIVE

Frequency to Voltage Converter for ground or supply referred load up to 50-mA

US ECCN: EAR99 US/Local Export Classification Number

NEW - Custom reel may be available
Inventory: 80,624  
 

Quality information

RoHS Yes
REACH Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
SOIC (D) | 14 2,500 | LARGE T&R
Custom reel may be available
-40 to 85
Package | Pins SOIC (D) | 14
Package qty | Carrier: 2,500 | LARGE T&R
Custom reel may be available
Operating temperature range (°C) -40 to 85
View TI packaging information

Features for the LM2907-N

  • 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
  • Output Swings to Ground For Zero Frequency Input
  • Easy to Use×VOUT = fIN × VCC × R1 × C1
  • Zener Regulator on Chip allows Accurate and Stable Frequency to Voltage or Current Conversion (LM2917)

Description for the LM2907-N

The LM2907 and LM2917 devices are monolithic frequency-to-voltage converters with a high gain op amp designed to operate a relay, lamp, or other 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 ground for a zero frequency input.

The op amp 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.

The two basic configurations offered include an 8-pin device with a input and an internal connection between the tachometer output and the op amp noninverting input. This version is well suited for single speed or frequency switching or fully buffered frequency-to-voltage conversion applications.

The more versatile configurations provide differential tachometer input and uncommitted op amp inputs. With this version the tachometer input may be floated and the op amp becomes suitable for active filter conditioning of the tachometer output.

Both of these configurations are available with an active shunt regulator connected across the power leads. The regulator clamps the supply such that stable frequency-to-voltage and frequency-to-current operations are possible with any supply voltage and a suitable resistor.

Pricing


Qty Price (USD)
1-99 1.539
100-249 1.271
250-999 0.913
1,000+ 0.687

Additional package qty | carrier options

Package qty | Carrier 55 | TUBE
Inventory 4,068
Qty | Price (USD) 1ku | 0.825 1-99 1.848 100-249 1.526 250-999 1.096 1,000+ 0.825