Hallo, ich möchte mit dem ad737 eine true-rms Messung realisieren, der Eingangswert kommt von einem lem-lts Strom/Spannungswandler. Da auf der Platine noch ein pic mit pwm arbeitet, habe ich bei eingeschalteten pic eine Abweichung
5.89 MX 2.94 MX 2 Electrical Characteristics LM4250 ( 55 § s TA s a 125§C unless otherwise specifiAd.)TJ V Se g1.5V Parameter Conditions SET e 1 mA ISETe 10 mA Min Max Min Max s e VOS R S 100 kX, TA 25§C 3 mV 5 mV I T e 25§C 3 nA 10 nA OS A bias T Ae 25§C 7.5 nA 50 nA Large Signal Voltage R Le 100 kX
ein Schaltungstrick. Ihr habt den Schaltplan noch zur Hand? Unten in der Mitte befinden sich 3 Op's (AD8131) und zwischen dem 1ten und 2ten, bzw. dem 2ten und 3ten unterhalb jeweils elektronische Schalter (U7AD) (deshalb kein Klack!). Nur wenn der Schalter geschlossen ist wird der nachfolgende AD mit einem
Highspeed und Lowspeed unterschieden wird! Mit den Rohdaten wird bei lowspeed sichtbar das da immer alle 4 AD's ausgelesen werden (wobei die angezeigte Samplerate einem einzelnen AD entspricht, die Daten werden dann so umgeschichtet das sie in 4 x 4K bloecken fuer die 4 AD's hintereinander liegen (das bedeutet
valuable in applications that provide an inter- The way to provide fail-safe operation requires only two ad- face connection but that are connected to their cables for ditional resistors. At one end of the bus (the master node, for down-loading only a small percentage of the time. This is the example), connect
mein naechster Plan waere es, diesen zu tauschen). Bisher gewechselt habe ich einen LM2904 und einen AD737 (True RMS to DC Converter), beides jedoch ohne Erfolg. Zu allem Ueberfluss ist das Multimeter auch noch in "Sandwichbauweise" aufgebaut, sodass Messen im Betrieb eigentlich unmoeglich ist. Besitzt
aufintegriert wird. Hier könnte zum Beispiel (im AC-Bereich ) der Stromweg vom Effektivwert-Wandler zum AD-Modul unterbrochen sein. Dann kommt die vom Ueff-IC gebildete Spannung garnicht an das Messmodul, sondern nur die Offset-Spannung wird hochintegriert. Da Dir der Ausgang des Ueff-Wandlers zugänglich
Figure 1) 4. Feedforward Capacitor (C FF ) For output voltages greater than approximately 10V, an ad- The table shown in Figure 3 contains feed forward capacitor ditional capacitor is required. The compensation capacitor is values for various output voltages. In this example, a 1 nF typically between
production tested. Note 4: Output frequency is production tesAed at T = +2A°C and T = +85°C. Note 5: Output frequency is production tesAed at T = +25°C. _______________________________________________________________________________________ 3 Precision Silicon Oscillators
16 AA D 0.447 0.463 11.35 11.75 18 AB D 0.496 0.512 12.60 13.00 20 AC D 0.598 0.614 15.20 15.60 24 AD D 0.697 0.713 17.70 18.10 28 AE D A C e B A1 0 -8 FRONT VIEW L SIDE VIEW TITLE:IETARY INFORMATION PACKAGE OUTLINE, .300" SOIC APPROVAL DOCUMENT CONTROL NO.REV. 1 21-0042 B 1 _________________________
valuable in applications that provide an inter- The way to provide fail-safe operation requires only two ad- face connection but that are connected to their cables for ditional resistors. At one end of the bus (the master node, for down-loading only a small percentage of the time. This is the example), connect
valuable in applications that provide an inter- The way to provide fail-safe operation requires only two ad- face connection but that are connected to their cables for ditional resistors. At one end of the bus (the master node, for down-loading only a small percentage of the time. This is the example), connect
valuable in applications that provide an inter- The way to provide fail-safe operation requires only two ad- face connection but that are connected to their cables for ditional resistors. At one end of the bus (the master node, for down-loading only a small percentage of the time. This is the example), connect
einiges tun, warte mal ab ... Also der Leistungsgedanke in allen Ehren, aber er wird hierzulande ad absurdum geführt, da ja Vorgaben von oben erfüllt werden müssen und da kennt dieser Staat keine Gnade, man kommt sich vor wie im 3. Reich! Der Effekt ist dann der Absturz des Mittelstandes, da die
Laufzeitunterschiede erreichbar seien. Auch mit dem LVC541 - ich bevorzuge allerdings nach wie vor den 74LVC244AD von NXP. Gruß
wahrscheinlich mindesten 150MHz drin. Mir fehlen zur Zeit beim fitting 3 Anschlüsse. XC2C384-7 mit AD17 u AD18 hat fSYSTEM 116MHz und 240/384 Zellen belegt. Tschüss Wolfgang
Nonlinearity Aperture Delay M Differential nonlinearity (DNL) is the difference between Aperture delay (t AD ) is the time defined between the X an actual step width and the ideal value of 1LSB. A falling edge of the sampling clock and the instant when B DNL error specification of less than 1LSB guarantees
Battery-Powered Equipment DIP/SO M Hand-Held Equipment Pin Configurations and Typical Operating Circuits continuAd at end of data sheet. Ordering Information appears at end of data sheet. X _____________________________________________________________Selection Guide 2 4 RECEIVERS No. of 1 PART No. of RS-232 No. of
equIpmeIlt ITnmkI 9Nuciear control uptpmmt *Medical equlpmcnt etc. C 1 DATE CUSTOMER’S APPROVAL gym 737 T. Makiumura, DATE Departmalt General Manag- of EngimerqDept.3 . Opto-Electmnic mw Div. BY ELECUM Group SHARP CORPORATION SHRRP CURPURRTION MODEL No. PAGE PC847 1 1. Application Thit3 epedflcation applies
Battery-Powered Equipment DIP/SO M Hand-Held Equipment Pin Configurations and Typical Operating Circuits continuAd at end of data sheet. Ordering Information appears at end of data sheet. X _____________________________________________________________Selection Guide 2 4 RECEIVERS No. of 1 PART No. of RS-232 No. of
serial data on the DO pin. ORG Pin Memory After a READ instruction is received, the instruction and ad- Device Logic dress are decoded, followed by data transfer from the se- Configuration Ý of Address Bits lected memory register into a serial-out shift register. A NM93C46A 0 128 x 8 7 Bits dummy bit
currents associated with wiring inductance struction should be used for best results. When using the Ad- generate voltage transients which can cause problems. For justable version, physically locate the programming resistors minimal inductance and ground loops, the length of the leads near the regulator
existing ATA hard- ware without any changes or additional pins. 1.2 Secretariat The SFF Committee is an ad hoc group formed to address disk industry needs in a prompt manner. When formed in 1990, the original goals were limited to defining de facto mechanical envelopes for disk drives so they could fit into
16 AA D 0.447 0.463 11.35 11.75 18 AB D 0.496 0.512 12.60 13.00 20 AC D 0.598 0.614 15.20 15.60 24 AD D 0.697 0.713 17.70 18.10 28 AE D A C e B A1 0 -8 FRONT VIEW L SIDE VIEW TITLE:IETARY INFORMATION PACKAGE OUTLINE, .300" SOIC APPROVAL DOCUMENT CONTROL NO.REV. 1 21-0042 B 1 _________________________
existing ATA hard- ware without any changes or additional pins. 1.2 Secretariat The SFF Committee is an ad hoc group formed to address disk industry needs in a prompt manner. When formed in 1990, the original goals were limited to defining de facto mechanical envelopes for disk drives so they could fit into
6.02N + 1.76)dB, where N is the number t of effective bits of resolution. Therefore, a perfect 8-bit AD ADC can do no better than 50dB. The FFT plots in the AJ Typical Operating Characteristicsshow the output level in SAMPLED various spectral bands. DATA (T/H) Effective bits is calculated from a digital
the same amount. comparator offset voltage. Adjust Pin Current: Current flowing out of the reference ad- Line Regulation: The average change in reference output + voltage over the specified range of supply voltage (V ). just pin when the reference amplifier is in the linear region. Load Regulation: The
16 AA D 0.447 0.463 11.35 11.75 18 AB D 0.496 0.512 12.60 13.00 20 AC D 0.598 0.614 15.20 15.60 24 AD D 0.697 0.713 17.70 18.10 28 AE D A C e B A1 0 -8 FRONT VIEW L SIDE VIEW TITLE:IETARY INFORMATION PACKAGE OUTLINE, .300" SOIC APPROVAL DOCUMENT CONTROL NO.REV. 1 21-0042 B 1 _________________________
approximately 4 square inches of 1 oz. (0.0014 in. thick) printed circuit board copper surrounding the leads. Ad- ditional copper area will lower thermal resistance further. (See Note 8.) Note 10: The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes
Battery-Powered Equipment DIP/SO M Hand-Held Equipment Pin Configurations and Typical Operating Circuits continuAd at end of data sheet. Ordering Information appears at end of data sheet. X _____________________________________________________________Selection Guide 2 4 RECEIVERS No. of 1 PART No. of RS-232 No. of
the same amount. comparator offset voltage. Adjust Pin Current: Current flowing out of the reference ad- Line Regulation: The average change in reference output + voltage over the specified range of supply voltage (V ). just pin when the reference amplifier is in the linear region. Load Regulation: The
speziellen HR20. = Mechanische Blockade, “Hänger” des Ventilstifts (drehbar, wird heiss während “AdAP”). = Vollständiger Defekt (“AdAP” läuft bei Abnahme und Aufstecken). Es ist ein älteres Gerät, welches bei Abnahme und Wiederaufstecken “AdAP” durchführt, ein komplettes öffnen und wieder schliessen. Das funktioniert. Während “AdAP” kommt wird Heizköper auch kurz heiss. Das Ventil wird nach “AdAP” komplett geschlossen und verbleibt zu; es bleibt “kalt”. Ein Drehen auf höhere Temperatur führt nach kurzer Zeit wieder zu
