2N5484 - N-Channel JFETs

Vishay 2007/11/15 09:57
FEATURES
* Excellent High-Frequency Gain: Gps 13 dB (typ) @ 400 MHz − 5485/6
* Very Low Noise: 2.5 dB (typ) @ 400 MHz − 5485/6
* Very Low Distortion
* High AC/DC Switch Off-Isolation

BENEFITS
* Wideband High Gain
* Very High System Sensitivity
* High Quality of Amplification
* High-Speed Switching Capability
* High Low-Level Signal Amplification

APPLICATIONS
* High-Frequency Amplifier/Mixer
* Oscillator
* Sample-and-Hold
* Very Low Capacitance Switches

DESCRIPTION
The 2N/SST5484 series consists of n-channel JFETs designed to provide high-performance amplification, especially at high frequencies up to and beyond 400 MHz.
The 2N series, TO-226AA (TO-92), and SST series, TO-236 (SOT-23), packages provide low-cost options and are available with tape-and-reel to support automated assembly (see Packaging Information).


2N5485
2N5486

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* Direct Upgrades to TL07x and TL08x BiFET Operational Amplifiers
* Faster Slew Rate (20 V/µs Typ) Without Increased Power Consumption
* On-Chip Offset-Voltage Trimming for Improved DC Performance and Precision Grades Are Available (1.5 mV, TL051A)

description/ordering information
 The TL05x series of JFET-input operational amplifiers offers improved dc and ac characteristics over the TL07x and TL08x families of BiFET operational amplifiers. On-chip Zener trimming of offset voltage yields precision grades as low as 1.5 mV (TL051A) for greater accuracy in dc-coupled applications.
 
 Texas Instruments improved BiFET process and optimized designs also yield improved bandwidth and slew rate without increased power consumption. The TL05x devices are pin-compatible with the TL07x and TL08x and can be used to upgrade existing circuits or for optimal performance in new designs.
BiFET operational amplifiers offer the inherently higher input impedance of the JFET-input transistors, without sacrificing the output drive associated with bipolar amplifiers. This makes them better suited for interfacing with high-impedance sensors or very low-level ac signals. They also feature inherently better ac response than bipolar or CMOS devices having comparable power consumption.

 The TL05x family was designed to offer higher precision and better ac response than the TL08x, with the low noise floor of the TL07x. Designers requiring significantly faster ac response or ensured lower noise should consider the Excalibur TLE208x and TLE207x families of BiFET operational amplifiers.
Because BiFET operational amplifiers are designed for use with dual power supplies, care must be taken to observe common-mode input voltage limits and output swing when operating from a single supply. DC biasing the input signal is required, and loads should be terminated to a virtual-ground node at mid-supply. Texas Instruments TLE2426 integrated virtual ground generator is useful when operating BiFET amplifiers from single supplies.

 The TL05x are fully specified at ±15 V and ±5 V. For operation in low-voltage and/or single-supply systems, Texas Instruments LinCMOS families of operational amplifiers (TLC-prefix) are recommended. When moving from BiFET to CMOS amplifiers, particular attention should be paid to the slew rate and bandwidth requirements, and also the output loading.

TL051ACP TL052ACP TL051ACD TL052ACD TL052ACDR TL051CP TL052CP TL054ACN TL051CD TL051CDR TL052CD TL052CDR TL054ACD TL054ACDR TL052CPSR TL054CDBR TL054CN TL054CD TL054CDR TL054CNSR TL052AIP TL052AID TL052AIDR TL054AIN TL051IP TL052IP TL051ID TL052ID TL052IDR TL054AID TL054AIDR TL054IN TL054ID TL054IDR
TAG JFET, OFFSET

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* Low Power Consumption
* Wide Common-Mode and Differential Voltage Ranges
* Low Input Bias and Offset Currents
* Output Short-Circuit Protection
* Low Total Harmonic Distortion. . . 0.003% Typ
* Low Noise Vn = 18 nV/√Hz Typ at f = 1 kHz
* High Input Impedance . . . JFET Input Stage
* Internal Frequency Compensation
* Latch-Up-Free Operation
* High Slew Rate . . . 13 V/µs Typ
* Common-Mode Input Voltage Range Includes VCC+

description/ordering information
 The JFET-input operational amplifiers in the TL07x series are similar to the TL08x series, with low input bias and offset currents and fast slew rate. The low harmonic distortion and low noise make the TL07x series ideally suited for high-fidelity and audio preamplifier applications. Each amplifier features JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a single monolithic chip.
 The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterized for operation from −40°C to 85°C. The M-suffix devices are characterized for operation over the full military temperature range of −55°C to 125°C.

 TL071A TL071B TL072 TL072A TL072B TL074 TL074A TL074B

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General Description
These are the first monolithic JFET input operational amplifiers to incorporate well matched, high voltage JFETs on the same chip with standard bipolar transistors (BI-FET™ Technology).
These amplifiers feature low input bias and offset currents/low offset voltage and offset voltage drift, coupled with offset adjust which does not degrade drift or common-mode rejection. The devices are also designed for high slew rate, wide bandwidth, extremely fast settling time,
low voltage and current noise and a low 1/f noise corner.

Features
Advantages
* Replace expensive hybrid and module FET op amps
* Rugged JFETs allow blow-out free handling compared with MOSFET input devices
* Excellent for low noise applications using either high or low source impedance—very low 1/f corner
* Offset adjust does not degrade drift or common-mode rejection as in most monolithic amplifiers
* New output stage allows use of large capacitive loads (5,000 pF) without stability problems
* Internal compensation and large differential input voltage capability

Applications
* Precision high speed integrators
* Fast D/A and A/D converters
* High impedance buffers
* Wideband, low noise, low drift amplifiers
* Logarithmic amplifiers
* Photocell amplifiers
* Sample and Hold circuits Common Features
* Low input bias current: 30pA
* Low Input Offset Current: 3pA
* High input impedance: 10¹² ohm
* Low input noise current: 0.01pA/Hz
* High common-mode rejection ratio: 100 dB
* Large dc voltage gain: 106 dB

LF155 LF156 LF256 LF257 LF355 LF356 LF357

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