| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential output amplifier arrangement(DOA) that comprises two separate operational amplifiers (OA1, OA2) each having a feedback resistor (R2, R4). SOLUTION: A pair of output resistors (R1, R3) couples the output terminals (OUT1, OUT2) of the operational amplifiers (OA1, OA2) to respective output terminals (ZOUT1, ZOUT2) of the arrangement (DOA), and a pair of input terminals (R7, R8) couples input terminals (IN1, IN2) of the arrangement (DOA) to negative polarity type input terminals (INN1, INN2) of the respective operational amplifiers (OA1, OA2). The positive polarity type input terminals (INP1, INP2) of the operational amplifiers (OA1, OA2) are grounded. Two additional resistors (R5, R6) cross-couple the output terminals (ZOUT1, ZOUT2) of the arrangement (DOA) to the negative polarity type input terminals (INN2, INN1) of the cross-coupled operational amplifiers (OA1, OA2).
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