전자부품 데이터시트 검색엔진 |
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AD8264 데이터시트(PDF) 7 Page - Analog Devices |
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AD8264 데이터시트(HTML) 7 Page - Analog Devices |
7 / 40 page AD8264 Rev. 0 | Page 7 of 40 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS IPP2 OPP3 IPN3 IPP3 8 7 6 5 1 4 3 2 29 30 31 32 28 34 33 27 IPN2 IPN1 OPP1 OPP2 14 13 17 12 11 18 VOH3 VGA3 VOL3 15 16 20 37 35 19 VOH1 VOH2 21 22 23 24 VGA2 VOL2 VOL1 PIN1 INDICATOR AD8264 TOP VIEW (Not to Scale) IPN4 OPP4 10 9 38 39 VOL4 VOH4 36 40 25 26 NOTES 1. EXPOSED PADDLE (PIN 0) NEEDS AN ELECTRICAL CONNECTION TO GROUND. FOR PROPER RF GROUNDING AND INCREASED RELIABILITY, THE PAD MUST BE CONNECTED TO THE GROUND PLANE. Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 0 (EP), 12, 39 COMM Ground. Exposed paddle (EP, Pin 0) needs an electrical connection to ground. For proper RF grounding and increased reliability, the pad must be connected to the ground plane. 1, 4, 7, 10 IPN1, IPN2, IPN3, IPN4 Negative Preamp Inputs for Channel 1 Through Channel 4. Normally, no external connection is needed. 2, 3, 8, 9 OPP1, OPP2, OPP3, OPP4 Preamp Output for Channel 1 Through Channel 4. This pin is internally connected to the attenuator (VGA) input, and normally, no external connection is needed. 5, 6, 11, 40 IPP1, IPP2, IPP3, IPP4 Positive Preamp Input for Channel 1 Through Channel 4. High impedance. 13, 14, 37, 38 GNH1, GNH2, GNH3, GNH4 Positive Gain Control Voltage Input for Channel 1 Through Channel 4. This pin is referenced to GNLO (Pin 36). 15 VOCM This pin sets the differential output amplifier (VOHx and VOLx) common-mode voltage. 16, 35 VPOS Positive Supply (Internally Tied Together). 17, 34 VNEG Negative Supply (Internally Tied Together). 18, 19, 32, 33 OFS1, OFS2, OFS3, OFS4 Voltage sets the differential output offset for Channel 1 through Channel 4. This is the noninverting input to the differential amplifier, and it has the same bandwidth as the inverting input (VGAx). 20, 25, 26, 31 VGA4, VGA3 VGA2, VGA1 VGA Output for Channel 1 Through Channel 4. 21, 24, 27, 30 VOL1, VOL2 VOL3, VOL4 Negative Differential Amplifier Output for Channel 1 Through Channel 4. 22, 23, 28, 29 VOH1, VOH2, VOH3, VOH4 Positive Differential Amplifier Output for Channel 1 Through Channel 4. 36 GNLO Negative Gain Control Input (Reference for GNHx Pins). |
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