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AS7331 数据表(PDF) 34 Page - OSRAM GmbH |
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AS7331 数据表(HTML) 34 Page - OSRAM GmbH |
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34 / 72 page  Document Feedback AS7331 Functional Description Datasheet • PUBLIC DS001047 • v4-00 • 2023-Mar-24 71 │ 33 TIME(1) 0 1 2 3 4 5 6 7 16x 21250.00 10625.00 5312.50 2656.25 1328.13 664.06 332.03 166.02 8x 42500.00 21250.00 10625.00 5312.50 2656.25 1328.13 664.06 332.03 4x 85000.00 42500.00 21250.00 10625.00 5312.50 2656.25 1328.13 664.06 2x 170000.00 85000.00 42500.00 21250.00 10625.00 5312.50 2656.25 1328.13 1x 340000.00 170000.00 85000.00 42500.00 21250.00 10625.00 5312.50 2656.25 (1) TIME (TCONV) – given by CREG1:TIME = 0 … 7 dec, NCLK – number of clock cycle within conversion time TCONV, RESOL – Resolution of internal A/D conversion, GAIN = 1x given by CREG1:GAIN = 11 dec up to GAIN = 2048x given by CREG1:GAIN = 0 dec (see Figure 48). (2) Basic sensitivity of the UVA-channel. Figure 28: UVA- Channel (λ = 315 nm – 410 nm) Programmable FSR and LSB of the Detectable Input Light Irradiance Ee TIME(1) 8 9 10 11 12 13 14 15 NCLK (1) 262144 524288 1.05E+06 2.10E+06 4.19E+06 8.39E+06 1.68E+07 1024 TCONV[s] (1) 0.256 0.512 1.024 2.048 4.096 8.192 16.384 0.001 RESOL[bit](1) 18 19 20 21 22 23 24 10 GAIN(1) FSR [µW/cm²] of detectable irradiance Ee (channel A) 2048x 42.50 21.25 10.63 5.31 2.66 1.33 0.66 170.00 1024x 85.00 42.50 21.25 10.63 5.31 2.66 1.33 340.00 512x 170.00 85.00 42.50 21.25 10.63 5.31 2.66 680.00 256x 340.00 170.00 85.00 42.50 21.25 10.63 5.31 1360.00 128x 680.00 340.00 170.00 85.00 42.50 21.25 10.63 2720.00 64x 1360.00 680.00 340.00 170.00 85.00 42.50 21.25 5440.00 32x 2720.00 1360.00 680.00 340.00 170.00 85.00 42.50 10880.00 16x 5440.00 2720.00 1360.00 680.00 340.00 170.00 85.00 21760.00 8x 10880.00 5440.00 2720.00 1360.00 680.00 340.00 170.00 43520.00 4x 21760.00 10880.00 5440.00 2720.00 1360.00 680.00 340.00 87040.00 2x 43520.00 21760.00 10880.00 5440.00 2720.00 1360.00 680.00 174080.00 1x 87040.00 43520.00 21760.00 10880.00 5440.00 2720.00 1360.00 348160.00 GAIN(1) LSB [nW/cm²] – least significant bit of FSR (channel A) 2048x 0.65 0.32 0.16 0.08 0.04 0.02 0.01 166.02 1024x 1.30 0.65 0.32 0.16 0.08 0.04 0.02 332.03 512x 2.59 1.30 0.65 0.32 0.16 0.08 0.04 664.06 256x 5.19 2.59 1.30 0.65 0.32 0.16 0.08 1328.13 128x 10.38 5.19 2.59 1.30 0.65 0.32 0.16 2656.25 64x 20.75 10.38 5.19 2.59 1.30 0.65 0.32 5312.50 32x 41.50 20.75 10.38 5.19 2.59 1.30 0.65 10625.00 |
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