REF5025AIDGKR集成電路（IC）的電壓基準(zhǔn)規(guī)格書PDF中文資料

REF5025AIDGKR屬于集成電路（IC）的電壓基準(zhǔn)。由德州儀器制造生產(chǎn)的REF5025AIDGKR電壓基準(zhǔn)產(chǎn)品屬于基準(zhǔn)電壓源系列，可通過相對較不穩(wěn)定的電源提供穩(wěn)定的電勢，電壓值始終保持恒定，以便在測量、控制和類似應(yīng)用中用作比較的標(biāo)準(zhǔn)。其功能行為可能與用于大功率調(diào)節(jié)的線性穩(wěn)壓器相似，但基準(zhǔn)電壓源器件卻不適合用于此類用途。用作比較標(biāo)準(zhǔn)時，若輸出電流容量或?qū)嶋H負(fù)載電流增大，其性能通常會降低。

1 Features

? Low temperature drift (maximum):

– Enhanced-grade (New): 2.5ppm/°C

– High-grade: 3ppm/°C

– Standard-grade: 8ppm/°C

? High accuracy (maximum):

– Enhanced-grade: 0.025%

– High-grade: 0.05%

– Standard-grade: 0.1%

? Low noise:

– Enhanced-grade: 0.5μVPP/V

– High/Standard-grade: 3μVPP/V

? Excellent long-term stability:

– 22ppm after first 1000 hours (SOIC-8)

– 50ppm after first 1000 hours (VSSOP-8)

? Wide input voltage support:

– Enhanced-grade: 42V

– High/Standard-grade: 18V

? High-output current: ±10mA

? Temperature range: -40°C to 125°C

2 Applications

? Precision data acquisition systems

? Semiconductor test equipment

? Industrial process controls

? Medical instrumentation

? Pressure and temperature transmitters

? Lab and field instrumentation

3 Description

The REF50xx is a family of low-noise, low-drift, very

high precision voltage references. These references

are capable of both sinking and sourcing current, and

have excellent line and load regulation.

Excellent temperature drift (2.5ppm/°C) and high

accuracy (0.025%) are achieved using proprietary

design techniques. These features, combined with

very low flicker noise (0.5μVPP/V), make the REF50xx

family an excellent choice for use in high-precision

data acquisition systems. REF50 family is available in

enhanced grade (REF50xxEI), high grade (REF50xxI)

and standard grade (REF50xxAI). The reference

voltages are offered in 8-pin SOIC and VSSOP

packages and are specified from –40°C to 125°C.

The REF50xxEI supports wide supply voltage rating

of 42V with ultra-low IQ of 340μA. The wide supply

range allows for direct connection to the battery or

field supply. This also protects the device in case of

power supply IC failure.