SNOSB31J July 2009 – December 2014 LMX2541
PRODUCTION DATA.
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
Bypass | 30 | Bypass | Put a cap to the VccBias pin. |
CE | 11 | CMOS | Chip Enable. The device needs to be programmed for this pin to properly power down the device. |
CLK | 33 | High-Z Input | MICROWIRE clock input. High impedance CMOS input. This pin is used for the digital FSK modulation feature. |
CPout | 16 | Output | Charge pump output. |
DATA | 32 | High-Z Input | MICROWIRE serial data input. High impedance CMOS input. |
ExtVCOin | 12 | RF Input | Optional input for use with an external VCO. This pin should be AC coupled if used or left open if not used. |
FLout | 17 | Output | Fastlock output. |
Ftest/LD | 20 | Output | Software controllable multiplexed CMOS output. Can be used to monitor PLL lock condition. |
GND | 0 | GND | The DAP pad must be grounded. |
GND | 1 | GND | |
GND | 10 | GND | |
GND | 27 | GND | |
L1 | 4 | NC | Do not connect this pin. |
L2 | 6 | NC | Do not connect this pin. |
LE | 34 | High-Z Input | MICROWIRE Latch Enable input. High impedance CMOS input. |
Lmid | 5 | NC | Do not connect this pin. |
NC | 35 | NC | No connect. |
OSCin | 21 | High-Z Input | Oscillator input signal. If not being used with an external crystal, this input should be AC coupled. |
OSCin* | 22 | High-Z Input | Complementary oscillator input signal. Can also be used with an external crystal. If not being used with an external crystal, this input should be AC coupled. |
RFout | 36 | RF Output | RF output. Must be AC coupled if used. |
RFoutEN | 24 | Input | Software programmable output enable pin. |
VccBias | 29 | Supply | Supply for Bias circuitry that is for the whole chip. |
VccCP1 | 14 | Supply | Power supply for PLL charge pump. |
VccCP2 | 18 | Supply | Power supply for PLL charge pump. |
VccDig | 28 | Supply | Supply for digital circuitry, such the MICROWIRE. |
VccDiv | 31 | Supply | Supply for the output divider |
VccFRAC | 25 | Supply (LDO Input) |
Power Supply for the PLL fractional circuitry. |
VccOSCin | 23 | Supply | Supply for the OSCin buffer. |
VccPLL1 | 13 | Supply | Power supply for PLL. |
VccPLL2 | 19 | Supply | Power supply for PLL. |
VccRFout | 3 | Supply (LDO Input) |
Supply for the RF output buffer. |
VccVCO | 7 | Supply (LDO Input) |
Supply for the VCO. |
VregFRAC | 26 | LDO Output | Regulated power supply used for the fractional delta-sigma circuitry. |
VregRFout | 2 | LDO Output | LDO Output for RF output buffer. |
VrefVCO | 9 | LDO Bypass | LDO Bypass |
VregVCO | 8 | LDO Output | LDO Output for VCO |
Vtune | 15 | High-Z Input | Tuning voltage input to the VCO. |