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CC2531 Datasheet(PDF) 9 Page - Texas Instruments |
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CC2531 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 32 page  ADC CHARACTERISTICS CC2531 www.ti.com ........................................................................................................................................................................................ SWRS086 – SEPTEMBER 2009 TA = 25°C and VDD = 3 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input voltage VDD is voltage on AVDD5 pin 0 VDD V External reference voltage VDD is voltage on AVDD5 pin 0 VDD V External reference voltage differential VDD is voltage on AVDD5 pin 0 VDD V Input resistance, signal Using 4-MHz clock speed 197 k Ω Full-scale signal(1) Peak-to-peak, defines 0 dBFS 2.97 V Single-ended input, 7-bit setting 5.7 Single-ended input, 9-bit setting 7.5 Single-ended input, 10-bit setting 9.3 Single-ended input, 12-bit setting 10.8 ENOB(1) Effective number of bits bits Differential input, 7-bit setting 6.5 Differential input, 9-bit setting 8.3 Differential input, 10-bit setting 10.0 Differential input, 12-bit setting 11.5 Useful power bandwidth 7-bit setting, both single and differential 0–20 kHz Single-ended input, 12-bit setting, –6 dBFS –75. 2 THD(1) Total harmonic distortion dB Differential input, 12-bit setting, –6 dBFS –86. 6 Single-ended input, 12-bit setting 70.2 Differential input, 12-bit setting 79.3 Signal to nonharmonic ratio(1) dB Single-ended input, 12-bit setting, –6 dBFS 78.8 Differential input, 12-bit setting, –6 dBFS 88.9 Differential input, 12-bit setting, 1-kHz sine (0 CMRR Common-mode rejection ratio >84 dB dBFS), limited by ADC resolution Single-ended input, 12-bit setting, 1-kHz sine (0 Crosstalk >84 dB dBFS), limited by ADC resolution Offset Midscale –3 mV Gain error 0.68 % 12-bit setting, mean 0.05 DNL(1) Differential nonlinearity LSB 12-bit setting, maximum 0.9 12-bit setting, mean 4.6 INL(1) Integral nonlinearity LSB 12-bit setting, maximum 13.3 Single-ended input, 7-bit setting 35.4 Single-ended input, 9-bit setting 46.8 Single-ended input, 10-bit setting 57.5 Single-ended input, 12-bit setting 66.6 SINAD(1) Signal-to-noise-and-distortion dB (–THD+N) Differential input, 7-bit setting 40.7 Differential input, 9-bit setting 51.6 Differential input, 10-bit setting 61.8 Differential input, 12-bit setting 70.8 7-bit setting 20 9-bit setting 36 Conversion time µs 10-bit setting 68 12-bit setting 132 Power consumption 1.2 mA Internal reference voltage 1.15 V (1) Measured with 300-Hz sine-wave input and VDD as reference. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): CC2531 |
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