- 制造厂商:TI
- 产品类别:放大器
- 技术类目:特殊功能放大器 - 变频器
- 功能描述:对地负载或电源负载高达 50mA 的频压转换器(带齐纳稳压器)
- 点击这里打开及下载LM2917-N的技术文档资料
- TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格
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.
- 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)
- Vs (Min) (V)
- 6
- Vs (Max) (V)
- 28
- Product type
- Frequency-to-voltage
- Operating temperature range (C)
- -40 to 85
- Rating
- Catalog
LM2917-N的完整型号有:LM2917M-8/NOPB、LM2917M/NOPB、LM2917MX-8/NOPB、LM2917MX/NOPB、LM2917N-8/NOPB、LM2917N/NOPB、LM2917M-8,以下是这些产品的关键参数及官网采购报价:
LM2917M-8/NOPB,工作温度:-40 to 85,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2917M-8/NOPB的批量USD价格:.792(1000+)
LM2917M/NOPB,工作温度:-40 to 85,封装:SOIC (D)-14,包装数量MPQ:55个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2917M/NOPB的批量USD价格:.792(1000+)
LM2917MX-8/NOPB,工作温度:-40 to 85,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2917MX-8/NOPB的批量USD价格:.66(1000+)
LM2917MX/NOPB,工作温度:-40 to 85,封装:SOIC (D)-14,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2917MX/NOPB的批量USD价格:.66(1000+)
LM2917N-8/NOPB,工作温度:-40 to 85,封装:PDIP (P)-8,包装数量MPQ:40个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网LM2917N-8/NOPB的批量USD价格:.759(1000+)
LM2917N/NOPB,工作温度:-40 to 85,封装:PDIP (N)-14,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网LM2917N/NOPB的批量USD价格:.759(1000+)
LM2917M-8,工作温度:-40 to 85,封装:SOIC (D)-8,包装数量MPQ:95个,MSL 等级/回流焊峰值温度:Level-1-235C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM2917M-8的批量USD价格:1.023(1000+)
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