Sonic Imagery Labs 252AP Discrete OpAmp API2520 drop-in upgrade replacement

Description

DESCRIPTION:
Model 252AP Discrete Operational Amplifier
No other Discrete Op-Amp on the market comes even close to our fully tested specifications.
This auction is for Qty(1) Brand New! Fully tested and assembled discrete opamp, ready to drop in and go!
This unit is available with 2 pin lengths, Standard 0.30" long or Retro/Vintage 0.50" long, Let us know at time of purchase which pin length you want. See Application Note AN-18 for more details.
Model 252AP Datasheet and Specifications PDF
Model 252AP 990Enh-Ticha and 995FET-Ticha Mechanical Options Application Note AN-18
Height, Pin Length OPTION's and socketing dimensions for both standard product and retro-clone or vintage upgrades.
General Description:
Model 252AP Discrete Operational Amplifier
The Sonic Imagery Labs Model 252AP is a high performance discrete operational amplifier designed for professional audio applications and areas where ultralow noise and low distortion is required. The 252AP is best suited for use in circuits with medium to high source impedances and with microphone input transformers with high turns ratios (> 1:4).
The Model 252AP is a modern re-engineering and redesign of the classic 2520 discrete op-amp. It was designed as an enhanced higher performance upgrade replacement with a focus on superior AC and DC performance. The pinouts conform to the 2520/990 package, allowing direct replacement.
The all-discrete SMT design is similar to the API2520 basic topology but has been redesigned to use an ultra-precision differential super-matched input transistor pair specifically designed to meet the requirements of ultra-low noise and ultra-low THD audio systems. A variant (252AP-ULN) is also available for ultra damn low noise applications. (0.560nV/rtHz at 1kHz) Unlike the original API2520 design, the 252AP can incorporate two precision matched pair transistors as the differential input stage. A total of 4 matched devices, for ultra-ultra low noise applications. These devices are selected by the manufacturer at final test to Sonic Imagery Labs noise, Vos, Ic and Vbe matching specifications.
DC perfomance is easily a magnitude better than previous counterparts. With an offset voltage of better than ±35uV (at Av1) and input leakage better than <30nA, the Sonic Imagery Labs Model 252AP is well suited for DC coupled audio applications in which output offset errors cannot be tolerated.
In addition to the enhanced input stage, and unlike the original API2520 devices, the Sonic Imagery Labs 252AP uses precision temperature stable power supply independent current sources. Supply independent current sources allow the bias of the input and matched pair differential VAS stage to remain locked at the optimum operating point regardless of power supply voltage.
Another feature not found in the original API2520 design is the addition of matched pair active current loads which gives the Model 252AP differential input and VAS stage it’s outstanding (PSRR) power supply noise rejection ratio performance.
The Sonic Imagery Labs 252AP can be operated from ±10V to ±25V power supplies. The redesigned input stage circuitry provides outstanding common-mode rejection and maintains low input bias current over its wide input voltage range, minimizing distortion. The 252AP is unity-gain stable and provides outstanding dynamic behavior over a wide range of load conditions.
Integrated power transistor heatsinks coupled to a anodized aluminum enclosure keeps the Sonic Imagery Labs 252AP operating within a wide safe operating area (SOA) and does not suffer from Beta droop when driving heavy loads. Each amplifier is individually fully tested and meets or exceeds published specifications.
Features:
• Ultra Low Total Harmonic Distortion, 0.0003 THD+N @ 1kHz
• Ultra Low Noise 0.92nV/rtHz typical@1Khz Rs=150 ohm
• High Current Output Drive (250mA peak)
• +28dBu Output Levels (into 600 ohms)
• Standard Gain Block Footprint
• Operates over ±10V to ±28V supply rails
• Much lower output offset voltage than existing counterparts
• Lower input leakage current than existing counterparts
• Particular emphasis on audio performance
• Designed, assembled and produced in the USA
• 3 Year Warranty
Applications:
• Low Impedance Line Amplifiers and Drivers
• Active Filters and Equalizers
• Summing/Mixer Amplifiers
• High Performance Microphone Preamplifiers
• High Performance A/D and D/A front end Preamplifier
• High Performance D/A I-V convertors
• High Current Buffer Amplifier
Specifications:
Model 252AP Datasheet and Specifications PDF
Model 252AP 990Enh-Ticha and 995FET-Ticha Mechanical Options Application Note AN-18
Height, Pin Length OPTION's and socketing dimensions for both standard product and retro-clone or vintage upgrades.
DOMESTIC SHIPPING AND HANDLING:
Shipping and handling charges: Items can be shipped
First Class Parcel for .25
tracking or
USPS Flat Rate Priority Mail for .75
with tracking
.
INTERNATIONAL SHIPPING AND HANDLING:
USPS First Class International Parcel ---> for .25
USPS International Flat Rate Priority Mail ---> for .45
CANADA and MEXICO ships
USPS International Flat Rate Priority Mail .95
, customs tracking to the border. All other countries- Contact us directly if you would rather use your own FEDEX, DHL or UPS carrier account.
CONDITIONS OF SALE:
Please read our terms carefully. Failure to understand our terms and conditions will delay your shipment of your items. If you live in California, you must pay sales tax. All items are sold with a 14 day satisfaction, money back, guarantee. Payment is due within 10 business days of auction's end. California residents must add 8.75% sales tax.
PAYMENT INFO:
We accept Visa, Mastercard, American Express and Discover thru our PAYPAL account.  Payments from outside the US should be payable in US Dollars.
See Also
Sonic Imagery Labs Model
992Enh-Ticha- Discrete Op Amp
DIP8
Sonic Imagery Labs Model
994Enh-Ticha- Dual Discrete Op Amp
DIP8
Sonic Imagery Labs Model
995FET-Ticha- FET Discrete Op Amp
990/2520
Sonic Imagery Labs Model
990Enh-Ticha- Discrete Op Amp
990/2520
Sonic Imagery Labs Model
312A VCA Module -Voltage Controlled Amplifier
Sonic Imagery Labs Model
898B 16 Channel Level Translator -Balanced - Unbalanced Cable Driver
Contact us directly for OEM and quantity pricing.