Texas Instruments JFE2140
The JFE2140 is a Burr-Brown™ Audio, matchedpair discrete JFET built using Texas Instruments' modern, high-performance, analog bipolar process. The JFE2140 features performance not previously available in older discrete JFET technologies. The JFE2140 offers excellent noise performance across all current ranges, where the quiescent current can be set by the user from 50 μA to 20 mA.| Part No. | JFE2140 |
|---|---|
| Datasheet | JFE2140 Download |
| Manufacturer |  Texas Instruments |
| Description | N-Channel JFET |
| Buy | Stock & Price |
FEATURES
● Ultra-low noise: – Voltage noise:● 0.9 nV/√Hz at 1 kHz, IDS = 5 mA
● 1.1 nV/√Hz at 1 kHz, IDS = 2 mA – Current noise: 1.6 fA/√Hz at 1 kHz
● Low VGS mismatch: 4 mV (max)
● Low gate current: 10 pA (max)
● Low input capacitance: 13 pF at VDS = 5 V
● High gate-to-drain and gate-to-source breakdown voltage: –40 V
● High transconductance: 30 mS
● Packages: SOIC, 2-mm × 2-mm WSON 2
APPLICATIONS
● Microphone inputs● Hydrophones and marine equipment
● DJ controllers, mixers, and other DJ equipment
● Professional audio mixer or control surface
● Guitar amplifier and other music instrument amp
● Condition monitoring sensor 3
DESCRIPTION
When biased at 5 mA, the device yields 0.9 nV/√Hz of input- D1 VCH D2 referred noise, giving ultra-low noise performance with extremely high input impedance (> 1 TΩ). In addition, the matching between JFETs is tested to ±4 mV, providing low offset and high CMRR performance for differential pair configurations. The JFE2140 also features integrated diodes connected to separate clamp nodes to provide protection without the addition of high leakage, nonlinear external diodes.
