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92 Threads found on edaboard.com: Low Power Clock
100mV RMS in an 8 ohm speaker produces a power output of only 1.25mW which is almost nothing. The low power of 81mW in an 8 ohm speaker is produced by an RMS voltage of 0.8V. A cheap clock radio can produce 500mW which is 2V RMS in 8 ohms. - - - Updated - - - A speaker produces a strong resonance. It is damp
clk_p and clk_n are differential clock pairs and most probably they are supplied off the FPGA chip from the circuit board. It is commented in the code snippet what is clk_p and clk_n. IBUFDS_inst : IBUFDS generic map ( DIFF_TERM => FALSE, -- Differential Termination IBUF_low_PWR => TRUE, -- low power (...)
I have a signal on the input of an IC that is held high by a pull-up resistor. The same signal is connected to the output of a D-flip flop. This enables me to clock a 0-value on to the flip flop output and drive the signal in question low. Driving the signal in question low will result in VCC to the D flip-flop driving the signal to be cut (...)
This 60W to 72W watt load at half power will also dissipate 50% of the power in the MOSFET. Not good. A slow rising PWM from 0 to 100% with 8 bit resolution might be better. with 12 V LEDs driven with a 30A Mosfet for low drop voltage from logic gate levels. This might be done with 3 clocks. 1) a step (...)
One issue with manually powering off the LCD, when it is powered up again it will require a delay in the order of 30ms to 50ms for the display controller chipset (HD44780 compatible) to fully initialize and be ready to accept input from the microcontroller. A better approach would be to utilize a couple of BJTs or MOSFETs in between the (...)
Hi, 1) the 0.4mA Active Current is @ 1MHz clock, if you use higher clock speeds , you will use more power. 2) For using this with a simple 9V battery, you need a low Quiescent current regulator , not a normal one. For Example : LM2936-5.0 (5V) , LT1521 Family (Fixed 5V, 3.3V , 3V versions or Adjustable Version (...)
If you want LiPO power, I suggest LCD instead for low current. 8x1 or logic out are 25 Ohm drivers so no problem with 10 Ohm ESR LEDs at 2.2V FWIW... and 1 ppm TCXO is only $1
power consumed is higher only when a register changes state. So if you have a large design that doesnt do a lot at a low clock frequency it will probably use a lot less power than a very small design running at a high clock frequency with a high % of change.
Help me to design a Monoshot with the following specifications 1. 200ms pulse width 2. Magnitude 0.5V steps in 0-20V range (total 40 pulses). That is 0,0.5V, 1V, 1.5V,......,19.5V & 20V. 3. capacity to drive maximum 1A load.
Hi Guys. Recently, I'm getting interested in the PRN Generator Using Linear Feedback Shifting Register(LFSR). If low power Performance is desired, which Logic Type and clock strategy are preferred.
Capacitor storage with low drain
A capacitive divider only works (properly) when clocked, zeroed periodically. This does consume power. Less than a low impedance resistor divider most likely, but nonzero and needing complexity. If you clock the feedback you can expect to see noise from that (deterministic tones in the output; customer must deal). You also (...)
Hi, Some topics you can delve in :- 1> CTS (the most important part of PnR) 2> Routing, addition of vias, fat vias, double spacing etc... NDR rules 3> placement issues and issues due to congestion 4> low power, voltage islands, clock gating (difference between ICG and clock gating introduced by the tool) 5> Floorplanning (...)
Is there any cmos circuit that subtract 2 voltages which is out-of-phase to each other.. the thing is the input voltages is very low, as low as -/+200mV.. i'm looking for clock dependent differential circuit (it doesn't have a external power supply) Is there any existing circuit like that? please help me on this, (...)
My project needs a charge pump that can boost a fixed DC voltage (250mV or less) up to a usable DC output (around 1.8V to power an IC). Since it is energy harvesting our teacher said not to use a supply (VDD) and just purely depend on the input as source (that is the 250mV or less). I have tried using some low-power voltage doubler and it (...)
We need to achieve all of these together. Only power might be a issue in low power. Apart from that all the others r required. You need to signoff with the all the above checks.
Hi, how to reduce the power dissipation in flip flop in cmos, i saw so many papers for reducing the power dissipation. in those papers they used dual edge triggered, pulse triggered, clock swing,multi threshold, clock gating master-slave latches and conditional discharge. i want to know the which one is the best (...)
Hi, I am comparing Plain synthesis Netlist vs low power synthesis Netlist( i have only used clock gating low power technique). I am using Cadence Tools. i find that there are unmapped points in low power netlist ( Red coloured "U") which is of clock (...)
Does anyone have any recommendations for a low-power pulse shortening circuit? i.e. I have an incoming clock pulse and I would like to reduce the duty cycle by a rough amount.
1- for our experience more than 10years, we design low power chip, the manual gated clock instertion is well know control than what it is done by the tool, or we do not see interesting power reduction based on our gated clock design. 2- yes, a combinational logic is added on the clock (...)