The Datron 4600 Transconductance Amplifier extends the current sourcing capabilities of Datron calibrators and standards, delivering precision current generation up to 11A DC or RMS AC. It operates in two modes: Slave Mode integrates with Datron 4700 series calibrators for automated control via the Autocal technique, while Solo Mode functions as a standalone amplifier driven by external voltage sources. The unit converts voltage input to current output at a 1:1 transfer characteristic (1A output per 1V input). This dual-mode architecture suits calibration laboratories and metrology applications requiring high-current generation with verifiable accuracy across frequency ranges from 10 Hz to 20 kHz.
## Technical Specifications
**Current Output**
• Maximum DC current: 11A
• Maximum AC RMS current: 11A
• Compliance voltage: >2V
• Input impedance: 300 kΩ in parallel with 100 pF
• Input isolation: 100V pk (input to chassis)
**DC Current Accuracy**
• Slave Mode: ±80 ppm output ±500 µA (90-day, 23°C ±1°C)
• Solo Mode: ±125 ppm (0 to 11A, 90-day ±1°C); Temperature coefficient 7 ppm/°C (23°C ±10°C)
**AC Current Accuracy**
• Slave Mode: ±(330 ppm output + 1.1 mA) at 10 Hz–1 kHz; ±(0.1% output + 1.4 mA) at 1–5 kHz
• Solo Mode: ±430 ppm (0.9–11A, 10 Hz–5 kHz). Frequency-dependent: +(200 ppm output + 1.1 mA) 10 Hz–1 kHz; ±(700 ppm output + 1.4 mA) 1–5 kHz; ±(1400 ppm output + 6 mA) 5–10 kHz; +(0.54% output + 33 mA) 10–20 kHz. Temperature coefficients: 10 ppm/°C (5 kHz)
**AC Performance**
• Total harmonic distortion: 0.1% (10 Hz–1 kHz), 0.5% (1–5 kHz), 1.0% (5–10 kHz), 1.5% (10–20 kHz)
• Frequency range: 10 Hz to 5 kHz (standard); 10 Hz to 20 kHz (extended)
## Key Features
• Transfer characteristic of 1A output per 1V input in Solo Mode
• Programmable output via calibrator front panel or IEEE-488 interface (Slave Mode)
• Autocal-based automated recalibration capability
• Requires specific lead kit (Datron Part Number 440151) for Slave Mode operation
## Compatibility & Integration
Slave Mode supports Datron 4700 series calibrators (firmware 5.0 and above), including models 4707, 4705, and 4708. Solo Mode operates with any suitable external voltage source.
