Datenblatt-Suchmaschine für elektronische Bauteile |
|
AD7942BRM-RL7 Datenblatt(PDF) 1 Page - Analog Devices |
|
AD7942BRM-RL7 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 24 page 14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/QFN AD7942 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2005–2008 Analog Devices, Inc. All rights reserved. FEATURES 14-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.4 LSB typical, ±1 LSB maximum (±0.0061% of FSR) SINAD: 85 dB @ 20 kHz THD: −100 dB @ 20 kHz Pseudo differential analog input range 0 V to VREF with VREF up to VDD No pipeline delay Single-supply 2.3 V to 5.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface Serial interface SPI-/QSPI -/MICROWIRE-/ DSP-compatible Daisy-chaining for multiple ADCs and busy indicator Power dissipation 1.25 mW @ 2.5 V/100 kSPS, 3.6 mW @ 5 V/100 kSPS 1.25 μW @ 2.5 V/100 SPS Standby current: 1 nA 10-lead package: MSOP and 3 mm × 3 mm QFN (LFCSP) Pin-for-pin compatible with the 16-bit AD7685 APPLICATIONS Battery-powered equipment Data acquisition Instrumentation Medical instruments Process controls APPLICATION DIAGRAM AD7942 REF GND VDD IN+ IN– VIO SDI SCK SDO CNV 1.8V TO VDD 3- OR 4-WIRE INTERFACE (SPI, DAISY CHAIN, CS) 0.5V TO 5V 2.5V TO 5V 0V TO VREF Figure 1. GENERAL DESCRIPTION The AD7942 is a 14-bit, charge redistribution, successive approxi- mation PulSAR ® ADC that operates from a single power supply, VDD, between 2.3 V to 5.5 V. It contains a low power, high speed, 14-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, it samples an analog input, IN+, between 0 V to VREF with respect to a ground sense, IN−. The reference voltage, VREF, is applied externally and is set up to be the supply voltage. Its power scales linearly with the throughput. The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is com- patible with 1.8 V, 2.5 V, 3 V, or 5 V logic using a separate supply (VIO). The AD7942 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) package yet fits in the same size footprint as the 8-lead MSOP or SOT-23. Operation for the AD7942 is specified from −40°C to +85°C. Table 1. MSOP, QFN (LFCSP)/SOT-23, 14-/16-/18-Bit ADCs Type 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ≥1000 kSPS ADC Driver 14-Bit AD7940 AD79421 AD79461 16-Bit AD7680 AD76851 AD76861 AD79801 ADA4941-x AD7683 AD76871 AD76881 AD79831 ADA4841-x AD7684 AD7694 AD76931 18-Bit AD76911 AD76901 AD79821 ADA4941-x AD79841 ADA4841-x 1 Pin-for-pin compatible to the AD7942. |
Ähnliche Teilenummer - AD7942BRM-RL7 |
|
Ähnliche Beschreibung - AD7942BRM-RL7 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller 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 |