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AM6012 데이터시트(PDF) 9 Page - NXP Semiconductors |
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AM6012 데이터시트(HTML) 9 Page - NXP Semiconductors |
9 / 11 page Philips Semiconductors Linear Products Product specification AM6012 12-Bit multiplying D/A converter August 31, 1994 784 APPLICATION CIRCUITS Figure 4. AM6012 Logic Inputs CODE FORMAT CONNECTIONS OUTPUT SCALE MSB LSB B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 IO (mA) IO (mA) VOUT Unipolar Symmetrical Offset Offset with True Zero Straight binary; one polarity with true input code, true zero output. Complementary binary; one polarity with complementary input code, true zero output. Straight offset binary; offset half-scale, symmetrical about zero, no true zero output. 1’s complement; offset half-scale, symmetrical about zero, no true zero output, MSB complemented (need inverter at B1). Offset binary; offset half- scale, true zero output. 2’s complement; offset half-scale, true zero output, MSB complemented (need inverter at B1). a – c b – g R1 = R2 = 2.5k a – g b – c R1 = R2 = 2.5k a – c b – d f – g R1 = R3 = 2.5k a – c b – d f – g R1 = R3 = 2.5k R2 = 1.25k e – a – c b – g e – a – c b – g R1 = R2 = 5k R1 = R2 = 5k R2 = 1.25k Positive full-scale Positive full-scale – LSB Zero-scale Positive full-scale Positive full-scale – LSB Zero-scale Positive full-scale Positive full-scale – LSB (+) Zero-scale (–) Zero-scale Positive full-scale Positive full-scale – LSB (+) Zero-scale (–) Zero-scale Negative full-scale – LSB Positive full-scale Positive full-scale – LSB + LSB Negative full-scale – LSB Negative full-scale Negative full-scale R 14 + V REF 1.0mA R OFF + V REF 2.0mA Zero-scale – LSB Negative full-scale + LSB Negative full-scale Positive full-scale Positive full-scale – LSB + 1 LSB Zero-scale – 1 LSB Negative full-scale + LSB Negative full-scale 1 1 1 1 1 1 1 1 1 1 1 1 3.999 0.000 9.9976 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 3.998 0.001 9.9951 0.000 3.999 0.0000 0.000 3.999 9.9976 0.001 3.998 9.9951 3.999 0.000 0.0000 1 1 1 1 1 1 1 1 1 1 1 1 3.999 0.000 9.9976 1 1 1 1 1 1 1 1 1 1 1 0 3.998 0.001 9.9927 1 0 0 0 0 0 0 0 0 0 0 0 2.000 1.999 0.0024 0 1 1 1 1 1 1 1 1 1 1 1 1.999 2.000 –0.0024 0 0 0 0 0 0 0 0 0 0 0 1 0.001 3.998 –9.9927 0 0 0 0 0 0 0 0 0 0 0 0 0.000 3.999 –9.9976 0 1 1 1 1 1 1 1 1 1 1 1 3.999 0.000 9.9976 0 1 1 1 1 1 1 1 1 1 1 0 3.998 0.001 9.9927 0 0 0 0 0 0 0 0 0 0 0 0 2.000 1.999 0.0024 1 1 1 1 1 1 1 1 1 1 1 1 1.999 2.000 –0.0024 1 0 0 0 0 0 0 0 0 0 0 1 0.001 3.998 –9.9927 1 0 0 0 0 0 0 0 0 0 0 0 0.000 3.999 –9.9976 1 1 1 1 1 1 1 1 1 1 1 1 3.999 0.000 9.9951 1 1 1 1 1 1 1 1 1 1 1 0 3.998 0.001 9.9902 1 0 0 0 0 0 0 0 0 0 0 1 2.001 1.998 0.0049 1 0 0 0 0 0 0 0 0 0 0 0 2.000 1.999 0.000 0 1 1 1 1 1 1 1 1 1 1 1 1.999 2.000 –0.0049 0 0 0 0 0 0 0 0 0 0 0 1 0.001 3.998 –9.9951 0 0 0 0 0 0 0 0 0 0 0 0 0.000 3.999 –10.000 0 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 3.998 0.001 9.9902 0 0 0 0 0 0 0 0 0 0 0 1 2.001 1.998 0.0049 0 0 0 0 0 0 0 0 0 0 0 0 2.000 1.999 0.000 1 1 1 1 1 1 1 1 1 1 1 1 1.999 2.000 –0.049 1 0 0 0 0 0 0 0 0 0 0 1 0.001 3.998 –9.9951 1 0 0 0 0 0 0 0 0 0 0 0 0.000 3.999 –10.000 AM6012 VREF(+) VREF(–) +10V REF OPTIONAL (SEE CODE TABLE) MSB LSB ROFF 5,000k Ω 2.000mA a b B12 B1 IO IO e VOUT R1 R3 R14 10k Ω R15 10k Ω f R2 c d g NE535 – + ADDITIONAL CODE MODIFICATIONS 1. Any of the offset binary codes may be complemented by reversing the output terminal pair. |
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