![AN028: Building an Auto-Ranging DMM with the ICL7103A](http://s1.studyres.com/store/data/007897560_1-001c88d32fd0cd9f63869c61b2515d48-300x300.png)
AN028: Building an Auto-Ranging DMM with the ICL7103A
... The integrator and comparator time constants are each reduced by a factor of 10 at the beginning of auto-zero if auto-ranging is required. However, the ICL7103A doesn’t enter the 3 1/2 digit mode until the input data to the 7474 is clocked into the register. This occurs 900 counts after autozero beg ...
... The integrator and comparator time constants are each reduced by a factor of 10 at the beginning of auto-zero if auto-ranging is required. However, the ICL7103A doesn’t enter the 3 1/2 digit mode until the input data to the 7474 is clocked into the register. This occurs 900 counts after autozero beg ...
LT1994 - Low Noise, Low Distortion Fully Differential Input/Output
... temperature range, otherwise specifications are at TA = 25°C. V+ = 3V, V– = 0V, VCM = VOCM = VICM = mid-supply, VSHDN = OPEN, RI = RF = 499Ω, RL = 800Ω to a mid-supply voltage (See Figure 1) unless otherwise noted. VS is defined (V+ – V–). VOUTCM is defined as (VOUT+ + VOUT–)/2. VICM is defined as (VIN+ ...
... temperature range, otherwise specifications are at TA = 25°C. V+ = 3V, V– = 0V, VCM = VOCM = VICM = mid-supply, VSHDN = OPEN, RI = RF = 499Ω, RL = 800Ω to a mid-supply voltage (See Figure 1) unless otherwise noted. VS is defined (V+ – V–). VOUTCM is defined as (VOUT+ + VOUT–)/2. VICM is defined as (VIN+ ...
Resistors
... is negligible, but if the resistance is low (or the voltage across the resistor high) a large current may pass making the resistor become noticeably warm. The resistor must be able to withstand the heating effect and resistors have power ratings to show this. Power ratings of resistors are rarely qu ...
... is negligible, but if the resistance is low (or the voltage across the resistor high) a large current may pass making the resistor become noticeably warm. The resistor must be able to withstand the heating effect and resistors have power ratings to show this. Power ratings of resistors are rarely qu ...
ADS823, ADS826: 10-Bit, 60MHz Sampling Analog-To
... are used to create a common-mode voltage (VCM) of approximately +2.5V to bias the inputs of the driving amplifier A1. Using the OPA680 on a single +5V supply, its ideal commonmode point is at +2.5V, which coincides with the recommended common-mode input level for the ADS823 and ADS826, thus obviatin ...
... are used to create a common-mode voltage (VCM) of approximately +2.5V to bias the inputs of the driving amplifier A1. Using the OPA680 on a single +5V supply, its ideal commonmode point is at +2.5V, which coincides with the recommended common-mode input level for the ADS823 and ADS826, thus obviatin ...
LTC1732-4
... LTC1732-4: replacing the battery before the timer has expired will reset the timer, thus starting a new charge cycle, provided the cell voltage of the new battery is less than 3.8V. If the new battery is greater than 3.8V, the timer will not be reset and charging will continue for the remaining port ...
... LTC1732-4: replacing the battery before the timer has expired will reset the timer, thus starting a new charge cycle, provided the cell voltage of the new battery is less than 3.8V. If the new battery is greater than 3.8V, the timer will not be reset and charging will continue for the remaining port ...
Chapter 5 - Parallel Circuits
... Two Resistors in Parallel • The total resistance for two resistors in parallel is equal to the product of the two resistors divided by the sum of the two resistors ...
... Two Resistors in Parallel • The total resistance for two resistors in parallel is equal to the product of the two resistors divided by the sum of the two resistors ...
+ R
... Two Resistors in Parallel • The total resistance for two resistors in parallel is equal to the product of the two resistors divided by the sum of the two resistors ...
... Two Resistors in Parallel • The total resistance for two resistors in parallel is equal to the product of the two resistors divided by the sum of the two resistors ...
AD7538 数据手册DataSheet 下载
... For zero offset adjustment, the DAC register is loaded with all 0s and amplifier offset (VOS) adjusted so that VOUT is 0 V. Adjusting VOUT to 0 V is not necessary in many applications, but it is recommended that VOS be no greater than (25 × 10–6) (VREF) to maintain specified DAC accuracy (see Applic ...
... For zero offset adjustment, the DAC register is loaded with all 0s and amplifier offset (VOS) adjusted so that VOUT is 0 V. Adjusting VOUT to 0 V is not necessary in many applications, but it is recommended that VOS be no greater than (25 × 10–6) (VREF) to maintain specified DAC accuracy (see Applic ...
Data Sheet
... AP3039 contains an Under Voltage Lock Out (UVLO) circuit. Two resistors R1 and R2 are connected from UVLO pin to ground and VIN pin respectively (see Figure 20). The resistor divider must be designed such that the voltage on the UVLO pin is higher than 1.25V when VIN is in the desired operating rang ...
... AP3039 contains an Under Voltage Lock Out (UVLO) circuit. Two resistors R1 and R2 are connected from UVLO pin to ground and VIN pin respectively (see Figure 20). The resistor divider must be designed such that the voltage on the UVLO pin is higher than 1.25V when VIN is in the desired operating rang ...
Series and Parallel Circuits
... Here’s some information that may be of some more practical use to you. When we put resistors together like this, in series and parallel, we change the way current flows through them. For example, if we have a 10V supply across a 10kΩ resistor, Ohm’s law says we’ve got 1mA of current flowing. ...
... Here’s some information that may be of some more practical use to you. When we put resistors together like this, in series and parallel, we change the way current flows through them. For example, if we have a 10V supply across a 10kΩ resistor, Ohm’s law says we’ve got 1mA of current flowing. ...
LTC1731-8.2/LTC1731-8.4 - Lithium
... battery is not connected. A precision internal resistive divider sets the final float potential on this pin. The resistor divider is disconnected in sleep mode. CHRG (Pin 2): Open-Drain Charge Status Output. When the battery is being charged, the CHRG pin is pulled low by an internal N-channel MOSFE ...
... battery is not connected. A precision internal resistive divider sets the final float potential on this pin. The resistor divider is disconnected in sleep mode. CHRG (Pin 2): Open-Drain Charge Status Output. When the battery is being charged, the CHRG pin is pulled low by an internal N-channel MOSFE ...
SD3272-32X4-81VRS4
... The device operates in the transparent mode when REGE is low. When REGE is high, the device operates in the registered mode. In registered mode, the Address and control inputs are latched if CLK is held at a high or low logic level. The inputs are stored in the latch/flip-flop on the rising edge of ...
... The device operates in the transparent mode when REGE is low. When REGE is high, the device operates in the registered mode. In registered mode, the Address and control inputs are latched if CLK is held at a high or low logic level. The inputs are stored in the latch/flip-flop on the rising edge of ...
Squishy Circuits as a Tangible Interface
... Another project that can be done with Squishy Circuits and a microprocessor is the Squishy RGB LED Controller, shown in Figures 5 and 6. In the same manner as Squishy Sound, three separate pieces of conductive dough can be utilized as input devices which control the brightness of a cluster of three ...
... Another project that can be done with Squishy Circuits and a microprocessor is the Squishy RGB LED Controller, shown in Figures 5 and 6. In the same manner as Squishy Sound, three separate pieces of conductive dough can be utilized as input devices which control the brightness of a cluster of three ...
TKN Measuring the node energy consumption in a USB based WSN testbed
... The LTC4150 provides the signal conditioning and conversion part of our circuit, but the node still needs an interface to control the operation of the circuit. The design of the control interface is crucial, because it must ensure that the testbed can reprogram the node even if the program on the no ...
... The LTC4150 provides the signal conditioning and conversion part of our circuit, but the node still needs an interface to control the operation of the circuit. The design of the control interface is crucial, because it must ensure that the testbed can reprogram the node even if the program on the no ...
STK300 USER MANUAL
... COM 1, COM 2, COM3 and COM 4 Maximum Read and Write Timeout settings with a default of 180000 and minimum Baud rate. Serial Maximum Read and Write Timeout settings with a default of 100000. Note: If you have Time Out Errors when using the programmer you should try and increase the time outs. Voltage ...
... COM 1, COM 2, COM3 and COM 4 Maximum Read and Write Timeout settings with a default of 180000 and minimum Baud rate. Serial Maximum Read and Write Timeout settings with a default of 100000. Note: If you have Time Out Errors when using the programmer you should try and increase the time outs. Voltage ...
Few External Components Reliable and Flexible SMPS Controller
... this pin due to size limitations and technology constraints. Protection is limited by the drain--substrate junction in avalanche breakdown. To help increase the application safety against high voltage spike on that pin it is possible to insert a small wattage 1.0 kΩ series resistor between the Vin r ...
... this pin due to size limitations and technology constraints. Protection is limited by the drain--substrate junction in avalanche breakdown. To help increase the application safety against high voltage spike on that pin it is possible to insert a small wattage 1.0 kΩ series resistor between the Vin r ...
LTC1562-2 - Very Low Noise, Low Distortion Active RC Quad Universal Filter
... multiple 2nd order blocks (see Typical Applicatons). Moreover, the virtual-ground input gives each 2nd order section the built-in capability for analog operations such as gain (preamplification), summing and weighting of multiple inputs, or accepting current or charge signals directly. These Operati ...
... multiple 2nd order blocks (see Typical Applicatons). Moreover, the virtual-ground input gives each 2nd order section the built-in capability for analog operations such as gain (preamplification), summing and weighting of multiple inputs, or accepting current or charge signals directly. These Operati ...
Skin Response Meter
... These ICs have 10 outputs each capable of sinking current to light LEDs brightly. Up to 4 LEDs can be connected to each output serially if the supply voltage is more than 9 volts. LED does not require a series resistor since the IC can regulate output current according to the value of the Programme ...
... These ICs have 10 outputs each capable of sinking current to light LEDs brightly. Up to 4 LEDs can be connected to each output serially if the supply voltage is more than 9 volts. LED does not require a series resistor since the IC can regulate output current according to the value of the Programme ...
LM5007 - Texas Instruments
... The LM5007 Step Down Switching Regulator features all of the functions needed to implement low cost, efficient, Buck bias regulators. This high voltage regulator contains an 80-V, 0.7-A N-Channel Buck Switch. The device is easy to apply and is provided in the VSSOP-8 and the thermally enhanced WSON- ...
... The LM5007 Step Down Switching Regulator features all of the functions needed to implement low cost, efficient, Buck bias regulators. This high voltage regulator contains an 80-V, 0.7-A N-Channel Buck Switch. The device is easy to apply and is provided in the VSSOP-8 and the thermally enhanced WSON- ...
LT1641 - Positive High Voltage Hot Swap Controller
... following a short-circuit. The drop across the sense resistor is held at 12mV as the timer ramps up. Since the output did not rise bringing FB above 0.5V, the circuit turns off. ...
... following a short-circuit. The drop across the sense resistor is held at 12mV as the timer ramps up. Since the output did not rise bringing FB above 0.5V, the circuit turns off. ...
LT1711/LT1712 - Single/Dual 4.5ns, 3V/5V/±5V, Rail-to-Rail Comparators
... latches in new data on the data inputs. Note 8: Output voltage swings are characterized and tested at V + = 5V and V – = 0V. They are guaranteed by design and correlation to meet these specifications at V – = – 5V. Note 9: The input voltage range is tested under the more demanding conditions of V + ...
... latches in new data on the data inputs. Note 8: Output voltage swings are characterized and tested at V + = 5V and V – = 0V. They are guaranteed by design and correlation to meet these specifications at V – = – 5V. Note 9: The input voltage range is tested under the more demanding conditions of V + ...
Bates
... Fig. 2-17: Rheostat connected in series circuit to vary the current I. Symbol for the current meter is A, for amperes. (a) Wiring diagram with digital meter for I. (b) Schematic diagram. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
... Fig. 2-17: Rheostat connected in series circuit to vary the current I. Symbol for the current meter is A, for amperes. (a) Wiring diagram with digital meter for I. (b) Schematic diagram. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
Descriptio on
... initially 225mV in Boost and Buck-Boost modes, varying with duty cycle. Flag open drain output Pin is high impedance during normal operation Pin switches low to indicate a fault, or warning condition Digital PWM output current control Pin driven either by open Drain or push-pull 3.3V or 5V logic lev ...
... initially 225mV in Boost and Buck-Boost modes, varying with duty cycle. Flag open drain output Pin is high impedance during normal operation Pin switches low to indicate a fault, or warning condition Digital PWM output current control Pin driven either by open Drain or push-pull 3.3V or 5V logic lev ...
TDA7200 ASK/FSK Single Conversion Receiver Version 1.0
... To demodulate frequency shift keyed (FSK) signals a PLL circuit is used that is contained fully on chip. The Limiter output differential signal is fed to the linear phase detector as is the output of the 10.7 MHz center frequency VCO. The demodulator gain is typically 200µV/kHz. The passive loop fil ...
... To demodulate frequency shift keyed (FSK) signals a PLL circuit is used that is contained fully on chip. The Limiter output differential signal is fed to the linear phase detector as is the output of the 10.7 MHz center frequency VCO. The demodulator gain is typically 200µV/kHz. The passive loop fil ...
11.3 Gbps Active Back-Termination, Differential Laser Diode Driver ADN2526
... As shown in Figure 1, the ADN2526 consists of an input stage and two voltage-controlled current sources for bias and modulation. The bias current, which is available at the IBIAS pin, is controlled by the voltage applied at the BSET pin and can be monitored at the IBMON pin. The differential modulat ...
... As shown in Figure 1, the ADN2526 consists of an input stage and two voltage-controlled current sources for bias and modulation. The bias current, which is available at the IBIAS pin, is controlled by the voltage applied at the BSET pin and can be monitored at the IBMON pin. The differential modulat ...
Charlieplexing
![](https://commons.wikimedia.org/wiki/Special:FilePath/Sandorclock.jpg?width=300)
Charlieplexing is a technique for driving a multiplexed display in which relatively few I/O pins on a microcontroller are used to drive an array of LEDs. The method uses the tri-state logic capabilities of microcontrollers in order to gain efficiency over traditional multiplexing. Although it is more efficient in its use of I/O, there are issues that cause it to be more complicated to design and render it impractical for larger displays. These issues include duty cycle, current requirements and the forward voltages of the LEDs.