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NE5517D Datasheet(PDF) 11 Page - NXP Semiconductors |
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NE5517D Datasheet(HTML) 11 Page - NXP Semiconductors |
11 / 13 page Philips Semiconductor Product data NE5517/NE5517A/ AU5517 Dual operational transconductance amplifier 2002 Dec 06 11 APPLICATION HINTS To hold the transconductance gM within the linear range, IABC should be chosen not greater than 1 mA. The current mirror ratio should be as accurate as possible over the entire current range. A current mirror with only two transistors is not recommended. A suitable current mirror can be built with a PNP transistor array which causes excellent matching and thermal coupling among the transistors. The output current range of the DAC normally reaches from 0 to –2 mA. In this application, however, the current range is set through RREF (10 kΩ) to 0 to –1 mA. I DACMAX + 2 @ V REF R REF + 2 @ 5V 10k W + 1mA 4 6 3 – + NE5517 5 11 1 7 8 VIN R4 = R2/ /R3 +VCC VC R2 R3 R1 RL RS +VCC INT VOUT –VCC IOUT IABC TYPICAL VALUES: R1 = 47k R2 = 10k R3 = 200Ω R4 = 200Ω RL = 100k RS = 47k INT SL00315 Figure 10. 4 3 – + NE5517/A 11 +VCC 8 VOUT1 –VCC 13 6 14 – + NE5517/A 9 VC RS VOUT2 –VCC VIN1 VIN2 30k 10k 10k RIN RIN RP +VCC RD 15k 1 16 12 10k RL 5.1k +VCC INT INT +VCC 10k RL 10 IABC IABC 15 15k RP +VCC RD 1k RC 1k SL00316 Figure 11. Gain-Controlled Stereo Amplifier |
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