" m! q% x0 X, O- q$ ~* b' rCPOUT $ ^/ b$ ?! L0 {6 ]9 E) ?& YCharge-Pump Output. Connect a PLL loop filter as a shunt C and a shunt combination of series R and C. 5 T% d9 k+ H9 @ " c: @5 H7 t# P$ R+ Q( L# m& _6 P) E7 p( N. `
踢哀（TI）E2E 論壇6 M; k; A' h- a9 H+ z8 R. N) F" w
As for the CPout pin, this is the charge pump output which can range from 0 to 2.5V, as it is powered by a 2.5V regulator. If this voltage falls below 0.5 V or goes above 2.0 V, then the Vtune lock detect will consider this unlocked. When the VCO is calibrated, this targes a voltage of around 1.2 volts, but this voltage can "tune" to adjust the VCO frequency.& e" F1 _ n/ ^- t+ [5 t# C
* r8 p# j+ D u. u& m0 j2 M
超級狗 发表于 2024-9-23 12:50" W- Q8 j0 }2 L% G5 o
踢哀（TI）E2E 論壇% }6 t3 {# Q) P5 s$ q
As for the CPout pin, this is the charge pump output which can range from 0 to 2 ...
/1 
楼主
收藏
淘帖
支持！
反对！
发表于 2024-9-23 12:44
6 P) E7 p( N. `