10.6.3 Sample layout of matched pair devices

Sample layout of matched pair transistors:

  • Transistor “A” expected to be matched with transistor “B”

  • Total width of transistor A = 2*W

  • “D” are the dummy transistors not connected to the circuit

(a) Cross coupled connection layout

Cross coupled connection layout

(b) Interleave kind of transistor layout

Interleave kind of transistor layout

Sample layout of matched pair Capacitors:

  • Capacitor “A” expected to be matched with Capacitor “B”

  • Total area of capacitor “A” = 2* unit cell area (for Cross couple layout below)

  • “D” are the dummy capacitors not connected to the circuit

(a) Cross coupled connection layout

Cross coupled connection layout

(b) Side by side layout

Side by side layout

Sample layout of matched pair Resistors:

  • Resistor “A” expected to be matched with Resistor “B”

  • Total length of resistor “A” = 4* L.

  • “D” are the dummy resistors not connected to the circuit

(a) Cross coupled type of layout

Cross coupled type of layout

(b) Non-Interleaved type of layout.

Non-Interleaved type of layout