Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
CS5490-ISZ Datasheet(PDF) 11 Page - Cirrus Logic |
|
CS5490-ISZ Datasheet(HTML) 11 Page - Cirrus Logic |
11 / 56 page CS5490 DS982F2 11 Notes: 5. All outputs unloaded. All inputs CMOS level. 6. Temperature accuracy measured after calibration is performed. 7. Measurement method for PSRR: VDDA = +3.3V, a 150mV (zero-to-peak) (60Hz) sinewave is imposed onto the +3.3V DC supply voltage at the VDDA pin. The “+” and “-” input pins of both input channels are shorted to GNDA. The CS5490 is then commanded to continuous conversion acquisition mode, and digital output data is collected for the channel under test. The (zero-to-peak) value of the digital sinusoidal output signal is determined, and this value is converted into the (zero-to-peak) value of the sinusoidal voltage (measured in mV) that would need to be applied at the channel’s inputs, in order to cause the same digital sinusoidal output. This voltage is then defined as Veq PSRR is (in dB): VOLTAGE REFERENCE Notes: 8. It is strongly recommended that no connection other than the required filter capacitor be made to VREF±. 9. The voltage at VREF± is measured across the temperature range. From these measurements the following formula is used to calculate the VREF temperature coefficient: 10. Specified at maximum recommended output of 1µA sourcing. VREF is a very sensitive signal, the output of the VREF circuit has a very high output impedance so that the 0.1µF reference capacitor provides attenuation even to low frequency noise, such as 50Hz noise on the VREF output. As such VREF intended for the CS5490 only and should not be connected to any external circuitry. The output impedance is sufficiently high that standard digital multi-meters can significantly load this voltage. The accuracy of the metrology IC can not be guaranteed when a multimeter or any component other than the 0.1µF capacitor is attached to VREF. If it is desired to measure VREF for any reason other than a very course indicator of VREF functionality, Cirrus recommends a very high input impedance multimeter such as the Keithley Model 2000 Digital Multimeter be used, but still cannot guarantee the accuracy of the metrology with this meter connected to VREF. Power Supplies Power Supply Currents (Active State) IA+ (VDDA = +3.3V) PSCA - 3.9 - mA Power Consumption (Note 5) Active State (VDDA = +3.3V) Stand-by State PC - - 12.9 4.5 - - mW mW Parameter Symbol Min Typ Max Unit Reference (Note 8) Output Voltage VREF +2.3 +2.4 +2.5 V Temperature Coefficient (Note 9) TCVREF -25 - ppm/°C Load Regulation (Note 10) VR -30 - mV Parameter Symbol Min Typ Max Unit PSRR 20 150 Veq ----------- log = TCVREF VREFMAX VREFMIN – VREFAVG ------------------------------------------------------------ 1 TAMAX TAMIN – ---------------------------------------------- 1.0 106 = |
Número de pieza similar - CS5490-ISZ |
|
Descripción similar - CS5490-ISZ |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes 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 |