Zakładka z wyszukiwarką danych komponentów |
|
ADS1202 Arkusz danych(PDF) 10 Page - Texas Instruments |
|
|
ADS1202 Arkusz danych(HTML) 10 Page - Texas Instruments |
10 / 25 page ADS1202 10 SBAS275B www.ti.com GENERAL DESCRIPTION The ADS1202 is a single-channel, 2nd-order, CMOS analog modulator designed for medium- to high-resolution conver- sions from dc to 39kHz with an oversampling ratio (OSR) of 256. The output of the converter (MDAT) provides a stream of digital ones and zeros. The time average of this serial output is proportional to the analog input voltage. The com- bination of an ADS1202 and a Digital Signal Processor (DSP) that is programmed to implement a digital filter results in a medium-resolution A/D converter system. This system allows flexibility with the digital filter design and is capable of A/D conversion results that have a dynamic range exceeding 85dB with OSR = 256. THEORY OF OPERATION The differential analog input of the ADS1202 is implemented with a switched capacitor circuit. This switched capacitor circuit implements a 2nd-order modulator stage, which digi- tizes the input signal into a 1-bit output stream. The sample clock (MCLK) provides the switched capacitor network and modulator clock signal for the A/D conversion process, as well as the output data-framing clock. The clock source can be internal as well as external. Different frequencies for this clock allow for a variety of solutions and signal bandwidths (however, this can only be utilized in mode 3). The analog input signal is continuously sampled by the modulator and compared to an internal voltage reference. A digital stream, which accurately represents the analog input voltage over time, appears at the output of the converter. 27 Ω +5V +5V 27 Ω 0.1 µF0.1µF 0.1 µF 10nF SPICLK SPISIMO V SSO V DD MCLK MDAT GND M0 V IN+ V IN– M1 ADS1202 DSP V DDO M FIGURE 1. Connection Diagram for the ADS1202 Delta-Sigma Modulator Including DSP. |
Podobny numer części - ADS1202 |
|
Podobny opis - ADS1202 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |