KROHN-HITE 7602
The Krohn-Hite 7602 Amplifier features 34 watts of continuous power that offers extended output power and volt age capabilities, low distortion, versa tility and the latest in hybrid CMOS power operational amplifier technology, with performance features not available in other power amplifiers.
The Krohn-Hite 7602 (and 7602M) provides 34 watts of continuous power (34 watts at dc) 34 watts of continuous power (68 watts at dc), and 282V rms (800V p-p). The frequency response is ±0.1dB to 10kHz, and the distortion contributed by the amplifier is <0.01% to 5kHz and <0.3% to 100kHz. The voltage gain can be either inverting or non-inverting and has selectable ranges from 0dB to 14dB, 14dB to 28dB and 28dB to 42dB (a voltage gain step of 5), and is continuously variable between the ranges.
Other fea tures include: modes of A, A–B and –B; common mode rejection of 80dB; in put coupling of ac or dc; a meter that is selectable to display heat sink tem peratures in °C, output peak voltage and average output current. A dc offset control is also provided that is variable from 0V to ±200V. The 7602 provides a balanced output and plus and minus voltages simultaneously.
Specifications of the 7602 include:
Frequency Range: dc to 1MHz.
Power
Volt age
Current: 910 ohm load, ±200mA peak, 141mA rms, dc to 500kHz.
Frequency Response: ±0.1dB, dc to 10kHz; ±0.25dB to 200kHz; ±0.5dB to 500kHz, 0-130V rms; ±0.5dB to 1MHz 0-80V rms.
Harmonic Distortion: <0.01% to 5kHz and 175V peak out put; <0.05% to 200V peak; <0.3% to 100kHz.
Voltage Gain: 0dB to 42dB in three ranges; 0dB to 14dB, 0dB to 28dB, 0dB to 42dB; continuously variable between ranges.
Dynamic Range: >80dB.
Hum and Noise (2MHz band width): re ferred to out put,
gain range.
Phase Shift: A input 0° ±1°, B input, 180° ±1° dc to 10kHz increasing lin early 60° lag ging at 1MHz.
Model 7602: (In verted out put rel a tive to non-in verted) 180°, –0.3° at 10kHz; 180°, –3° at 100kHz; 180°, –20° at 1MHz.
Squarewave Response
Regulation: <0.1%, No load to 1k ohm load, dc to 10kHz, rising to 2% at 1MHz.
Coupling: DC.
DC Level: Nominal zero volts; vs. temperature, 2mV/°C.
DC Off set Control (no load): 0V to ±200V.
DC Level Stability
Vs. Line:
Vs. Temperature: <0.01%/°C or 2mV/°C whichever is greater.
Internal Impedance:
Output Protection: Protected from over loads with a unique foldback limiter which keeps the out put current within safe operating regions. Kick back diodes clamp kick back voltages to the supply.
INPUT
Modes: A, A–B, –B.
Maximum Voltage (with out damage): ±200V dc referred to ground.
Maximum Common Mode: 0dB to 14dB range, ±200V peak; 14dB to 28dB range, ±40V peak; 28dB to
42dB range, ±8V peak.
Common Mode Rejection: 80dB, dc to 200Hz; 60dB to 1kHz; 40dB to 10kHz; rising to 20dB at 1MHz.
Sensitivity: ±1.6V peak.
Coupling: Direct (dc) or capacitive (ac) with low frequency cut off of approximately 1Hz.
Impedance: 1 Meg ohm in parallel with 30pF with front inputs only; 65pF with front and optional rear inputs, independent of input gain setting.
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