Model 995FET-Ticha Discrete Op Amp
Updated March 4th, 2014
Model 995FET-Ticha Datasheet and Specifications PDF
Model 995FET-Ticha Purchase Online
995FET-Ticha Discrete Operational Amplifier
The 995FET-Ticha is a high performance discrete operational amplifier
designed for professional audio applications and areas where ultra-low
noise, extremely low distortion and highly linear uncolored operation
is required. A true super matched pair FET input stage is incorporated
to provide superior sound quality and speed for exceptional audio
performance. This in combination with high output drive capability and
excellent dc performance allows use in a wide variety of demanding
applications. In addition, the 995FET’s wide output swing provides
increased headroom making it ideal for use in any audio circuit.
995FET-Ticha opamp can be operated from ±10V to ±24V power supplies.
Input cascode circuitry provides excellent common-mode rejection and
maintains low input bias current over its wide input voltage range,
minimizing distortion. The 995FET discrete op amp is unity-gain stable
and provides excellent dynamic behavior over a wide range of load
all-discrete SMT design uses an ultra-precision differential matched
FET pair specifically designed to meet the requirements of ultra-low
noise and ultra-low THD audio systems. In addition to the enhanced
input stage, the 995FET-Ticha incorporates precision temperature stable
power supply independent current sources. Supply independent current
sources allow the bias to remain locked at the optimum operating point
regardless of supply voltage.
Dual matched pair temperature stable current mirrors, dual matched pair
active current loads give the 995FET-Ticha it's outstanding power
supply rejection performance. The enhanced low distortion Class-A
output driver stage can sink or source 250mA allowing this module to
drive transformers directly. Integrated power transistor heat sinks
coupled to a anodized aluminum enclosure keeps the 995FET-Ticha
operating within a wide SOA and does not suffer from Beta droop when
driving heavy iron or heavy loads. Each amplifier is fully tested and
meets or exceeds published specifications.
of the 995FET-Ticha's high current drive capability, supporting
circuitry impedances can be scaled down within the application circuit.
This can reduce the overall system noise, without increased distortion
and provides higher headroom compliance performance.
995FET-Ticha discrete opamp was designed as an enhanced upgrade
replacement for the Millennia Media Series MM-99, MM990, Forssell
Technologies JFET-993, JFET-992, or other similar end of life or
obsolete FET based op-amp gain blocks. The pinouts conform to the
990/2520 package type, allowing direct replacement.
• Ultra Low Total Harmonic Distortion, 0.00048 THD+N @ 1kHz
• Ultra Low Noise, 1.1nV/rtHz
• High Current Output Drive (250mA into 75 ohms)
• 112dB Open Loop Gain
• +26.5dBu Output Levels (into 600 ohms)
• Standard Gain Block Footprint
• Operates over ±10V to ±24V supply rails
• Lower output offset voltage than existing counterparts
• Lower input leakage current than existing counterparts
• Class A Output Drive
• Particular emphasis on audio performance
• Designed, assembled and produced in the USA
• 3 Year Warranty
• High Input Impedance Line Amplifiers and Drivers
• High Input Impedance Buffer
• Active Filters and Equalizers
• Summing/Mixer Amplifiers
• High Performance High Input Impedance
• High Performance A/D front end preamplifier
• High Performance D/A back-end driver
Model 995FET-Ticha Discrete OpAmp Datasheet and Specifications PDF
Model 995FET-Ticha Discrete OpAmp Purchase Online
Sonic Imagery Labs Model 994Enh-Ticha- Dual Discrete Op Amp DIP8
Sonic Imagery Labs Model 990Enh-Ticha- Discrete Op Amp 990/2520
Sonic Imagery Labs Model 992Enh-Ticha- Discrete Op Amp DIP8
Contact us directly for OEM and quantity pricing.
Why Use a Discrete Operational Amplifier?
1. When the best possible distortion performance is demanded.
Most monolithic op-amps use Class-B or Class-AB output stages, and many
of them (though certainly not all) show clear crossover distortion
artifacts on the distortion residual. A discrete op-amp can dissipate
more power than a monolithic integrated circuit (IC), and so can have a
Class-A output stage, sidestepping the crossover distortion problem
2. When the best possible noise performance is required.
Super-matched precision matched pair field effect transistors can
outperform monolithic IC op-amps, particularly with low source
resistances. The most common examples are moving coil head amps,
microphone preamps, summing structures in mixing boards, balanced cable
line receivers and line drivers. These structures almost invariably use
a discrete input device, with open loop gain (for linearity) and load
driving capability provided by an ordinary op-amp which may itself have
fairly poor noise specifications.
3. When a load requires more drive current, because of its low impedance, than a monolithic op-amp can provide without overheating or current limiting. Because
discrete op-amps have high current drive capability, supporting
circuitry impedances can also be scaled down within the application
circuit. This will reduce the overall system noise, without increasing
distortion and provide higher headroom performance.
4. When a load must be driven to higher voltages than a monolithic IC can sustain between power supply rails.
Monolithic IC op-amps are mostly restricted to supply voltages of ±5 to
±18 volts. Discrete operational amplifiers provide a viable alternative
because they can operate in excess of ±24 volts.
5. When it is required to provide a low voltage supply to run a few monolithic IC op-amps. The
cost of extra transformer windings, rectifiers, filter capacitors,
regulators, and added complexity of powers supplies can be eliminated
with the use of discrete op-amps.
specifications subject to change without notice. The information
provided herein is believed to be reliable; however; Sonic Imagery Labs
assumes no responsibility for inaccuracies or omissions. Sonic Imagery
Labs does not warrant or authorize any Sonic Imagery Labs products for
use in life support devices and/ or systems.
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