Precision Audio and AV Interface Products

Radio Design Labs

STA-1M Audio Line Amplifier - Mono: -14 to 14 dB Gain

  • Single-Channel Audio Line Amplifier
  • Balanced or Unbalanced Inputs and Outputs
  • Bridge a Line to Avoid Loading
  • High to Low Impedance Conversion
  • Low to High Impedance Conversion
  • Instrumentation Input to Isolate Ground Loops
  • Precisely Match Audio Levels
  • RDL® SupplyFlex™ Power Input Configuration
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The STA-1M allows bridging any audio line, adjusting the gain, and driving a balanced or unbalanced line. The circuit design allows the input to accept either balanced or unbalanced signals, of either high or low impedance. This is an instrumentation type input stage which will amplify the differential input, regardless of ground reference. The output is capable of driving either high or low impedance loads, and the output may be connected either balanced or unbalanced.

RDL's SupplyFlex power input configuration is included in the STA-1M. The power supply input may be fed from a floating (not ground-referenced) 24 Vdc power source, from a bipolar power supply (+/ 12 Vdc or +/-15 Vdc) or from a ground-referenced 24 Vdc power supply.

Applications

Input:
10 kΩ balanced or unbalanced bridge
Outputs (2):
150 Ω balanced to drive low or high-Z; 75 Ω unbalanced
Output Level:
+4 dBu nominal, (adjustable; unbalanced output 6 dB below balanced line level)
THD+N:
< 0.05%
Frequency Response:
10 Hz to 20 kHz (±0.25 dB)
Headroom above +4 dBu:
> 18 dB
CMRR:
> 50 dB at full gain (50 to 120 Hz)
Noise Below + 4dBu:
< -75 dB
Gain:
Adjustable per chart below
Input/Output    Min Gain/Max Gain
Unbal. / Balanced       -7 dB / +14 dB
Bal. / Balanced           -7 dB / +14 dB
Bal. / Unbalanced       -14 dB / +7 dB
Unbal. / Unbalanced    -14 dB / +7 dB
Ambient Operating Environment:
0° C to 55° C
Power Requirement:
GROUND-REFERENCED or FLOATING, 24 Vdc @ 50 mA
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.19 lbs.
WEEE weight:
0.136 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
Declaration of Conformity:
Format
PDF
A&E Specifications:
Format

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STICK-ON SERIES

STICK-ONs are the original application-specific modules for the A/V, recording and broadcast industries. Module functions include signal detection, switching, pre-amplification, format conversion, line driving, power amplification, mixing, distribution, gain control, equalization, routing and more. Each STICK-ON is an ultra-compact module engineered to provide higher performance and longer life than other industry products. STICK-ON modules are solid encapsulated hybrid circuits in durable industrial black plastic enclosures (1.55", 3.94 cm x 3", 7.62 cm x 0.65", 1.65 cm) with clear bold white lettering for the terminal block connections, recessed trimming controls and switches.

Since RDL first originated application-specific modules, STICK-ONs have led the industry in economical, high-performance and cost-effective long life solutions in system designs. Multiple STICK-ON modules can be interconnected to form all or part of an A/V system. A single STICK-ON module may be mounted right where its function is needed, often to add an input, output, or gain adjustment to existing equipment. STICK-ON modules allow customizing an A/V system to precisely match users’ needs. Adding STICK-ONs to an existing system can extend system life by adding updated features, resulting in considerable cost savings. A complete range of backboard and rack mounting options is available for systems comprised of multiple STICK-ON modules.

The technology used in STICK-ON modules has been regularly updated over the years to insure industry-leading performance. Functions and features provided by STICK-ONs, since their introduction, are still available today. This continuity in product offering and support makes STICK-ON modules the preferred long-term resource for system design solutions. STICK-ON SERIES modules are designed and manufactured in the U.S.A.

STA-1M STA-1M