Circuit and method for programmably changing the transconductance of a transconductor circuit

摘要: A programmably variable transconductance circuit (10) and method for varying its includes first second current control input devices (16, 18), each having an (17,19) to which a differential voltage may be applied. pair of steering circuits (26, 28, 30, 32) are connected in series with respective one the 18) dividing currents between output path (12, 14) another flow path, programmable source (90) supplying VCONTROL is division by 32). The voltage, VCONTROL, provided loop (90), incorporates master circuit, establish constant independently temperature variations. dynamically controllable resistance, such as MOS transistor (24), or like, (VGATE) resistance (24) maintain at value.