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ENICSF2811PBKA 数据表(PDF) 145 Page - Texas Instruments |
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ENICSF2811PBKA 数据表(HTML) 145 Page - Texas Instruments |
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145 / 172 page  ac R s ADCIN0 C 10 pF p C 1.25 pF h Switch Typical Values of the Input Circuit Components: Switch Resistance (R ): 1 k on W 1 kW Sampling Capacitor (C ): 1.25 pF h Parasitic Capacitance (C ): 10 pF p Source Resistance (R ): 50 s W 28x DSP Source Signal R on TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 6-45. AC Specifications PARAMETER MIN TYP MAX UNIT SINAD Signal-to-noise ratio + distortion 62 dB SNR Signal-to-noise ratio 62 dB THD (100 kHz) Total harmonic distortion –68 dB ENOB (SNR) Effective number of bits 10.1 Bits SFDR Spurious free dynamic range 69 dB 6.30.3 Current Consumption for Different ADC Configurations Table 6-46. Current Consumption for Different ADC Configurations (at 25-MHz ADCCLK)(1) IDDA (TYP) (2) IDDAIO (TYP) IDD1 (TYP) ADC OPERATING MODE/CONDITIONS Mode A (Operational Mode): 40 mA 1 µA 0.5 mA • BG and REF enabled • PWD disabled Mode B: • ADC clock enabled 7 mA 0 5 µA • BG and REF enabled • PWD enabled Mode C: • ADC clock enabled 1 µA 0 5 µA • BG and REF disabled • PWD enabled Mode D: • ADC clock disabled 1 µA 0 0 • BG and REF disabled • PWD enabled (1) Test Conditions: • SYSCLKOUT = 150 MHz • ADC module clock = 25 MHz • ADC performing a continuous conversion of all 16 channels in Mode A (2) IDDA – includes current into VDDA1/VDDA2 and AVDDREFBG Figure 6-39. ADC Analog Input Impedance Model Copyright © 2001–2012, Texas Instruments Incorporated Electrical Specifications 145 Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 |
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