Is the LM13700 an operational transconductance amplifier?
The LM13700 The LM13700 is an Operational Transconductance Amplifier ( https://en.wikipedia.org/wiki/Operational_transconductance_amplifier) converting a differential voltage into a current output. In the datasheet of this chip ( http://www.ti.com/lit/ds/symlink/lm13700.pdf) you’ll find many interesting application circuits.
How to write Ota transconductance for floating resistor?
Using basic OTA relations – and with Vs as a test signal source – we can write (gm: OTA transconductance): Rin1=-Vs/Iout= (RA+R)/gm*RA. The given circuit for a floating resistor is a symmetric extension of this shown basic OTA-resistor – however, with cross-coupled OTA input terminals. Hence we can expect a similar expression for Rin2.
How is a resistive transistor connected to a VCR?
Take a look at the (emulated) resistive terminal of the VCR. A positive voltage Vx is applied on that terminal. The (darlington) transistor on the right is connected as an emitter follower, duplicating voltage Vx at its emitter output. Next, the voltage is trimmed down with the resistive divider RB and RA to V1.
How are the output buffers of the LM13700 different?
2 Applicationsespecially designed to complement the dynamic • Current-Controlled Amplifiers range of the amplifiers. The output buffers of the LM13700 differ from those of the LM13600 in that • Stereo Audio Amplifiers their input bias currents (and thus their output DC • Current-Controlled Impedances levels) are independent of IABC.
How does the LM13700 differ from the IABC?
The output buffers of the LM13700 differ from those of the LM13600 in that • Stereo Audio Amplifiers their input bias currents (and thus their output DC • Current-Controlled Impedances levels) are independent of IABC. This may result in • Current-Controlled Filters performance superior to that of the LM13600 in audio applications.
How many pins are in the LM13700 dual operational unit?
6.3 Thermal Information LM13700 THERMAL METRIC(1)D (SOIC) NFG (PDIP) UNIT 16 PINS 16 PINS
How is a VCR a voltage controlled resistor?
A VCR (Voltage Controlled Resistor) is a circuit that emulates a resistor. It must behave in all practical ways like a resistor to any “external circuit” connected to its terminals. Although there are several ways to build a VCR, we’ll dig into the technique offered by the LM13700 component.