ZHCSIC4C June 2018 – November 2018 LMX2615-SP
PRODUCTION DATA.
| PIN | I/O | TYPE | DESCRIPTION | |
|---|---|---|---|---|
| NO. | NAME | |||
| 1 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 2 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 3 | FS0 | I | — | Parallel pin control. This is the LSB. |
| 4 | FS1 | I | — | Parallel pin control |
| 5 | CAL | I | — | Chip enable. In Pin Mode (not SPI Mode), rising edges presented to this pin activate the VCO calibration. |
| 6 | GND | — | — | Ground |
| 7 | VbiasVCO | — | — | VCO bias. Requires connecting 10uF capacitor to ground. Place close to pin. |
| 8 | GND | — | — | Ground |
| 9 | SYNC | I | — | Phase synchronization input pin. |
| 10 | GND | — | — | Ground |
| 11 | VccDIG | — | — | Digital supply. Recommend connecting 0.1uF capacitor to ground. |
| 12 | OSCinP | I | — | Complimentary Reference input clock pins. High input impedance. Requires connecting series capacitor (0.1 uF recommended). |
| 13 | OSCinM | I | — | Complimentary pin to OSCinP. |
| 14 | VregIN | — | — | Input reference path regulator decoupling. Requires connecting 1uF capacitor to ground. Place close to pin. |
| 15 | FS2 | I | — | Parallel pin control |
| 16 | FS3 | I | — | Parallel pin control |
| 17 | FS4 | I | — | Parallel pin control |
| 18 | FS5 | I | — | Parallel pin control |
| 19 | FS6 | I | — | Parallel pin control |
| 20 | FS7 | I | — | Parallel pin control. This is the MSB. Controls output state in pin mode. When this pin is low, only RFoutA is active, otherwise both outputs are active. |
| 21 | VccCP | — | — | Charge pump supply. Recommend connecting 0.1uF capacitor to ground. |
| 22 | CPout | O | — | Charge pump output. Recommend connecting C1 of loop filter close to charge pump pin. |
| 23 | GND | — | Ground | Ground |
| 24 | GND | — | Ground | Ground |
| 25 | VccMASH | — | — | Digital supply. Recommend connecting 0.1uF and 10uF capacitor to ground. |
| 26 | SCK | I | — | SPI input clock. High impedance CMOS input. 1.8 – 3.3V logic. |
| 27 | SDI | I | — | SPI input data. High impedance CMOS input. 1.8 – 3.3V logic. |
| 28 | GND | — | Ground | Ground |
| 29 | RFoutBM | O | — | Complementary pin for RFoutBP |
| 30 | RFoutBP | O | — | Differential output B Pair. Requires connecting a 50-Ω resistor pull-up to Vcc as close as possible to pin. Can be used as a synthesizer output or SYSREF output. |
| 31 | GND | — | Ground | Ground |
| 32 | MUXout | O | — | Multiplexed output pin. Can output: lock detect, SPI readback and diagnostics. |
| 33 | NC | — | — | No connection. Leave Unconnected |
| 34 | VccBUF | — | — | Output buffer supply. Requires connecting 0.1uF capacitor to ground. |
| 35 | GND | — | Ground | Ground |
| 36 | RFoutAM | O | — | Complementary pin for RFoutAP |
| 37 | RFoutAP | O | — | Differential output B Pair. Requires connecting a 50-Ω resistor pull-up to Vcc as close as possible to pin. |
| 38 | GND | — | Ground | Ground |
| 39 | CSB | I | — | SPI chip select bar. High impedance CMOS input. 1.8 – 3.3V logic. |
| 40 | GND | — | Ground | Ground |
| 41 | VccVCO2 | — | — | VCO supply. Recommend connecting 0.1uF and 10uF capacitor to ground. |
| 42 | VbiasVCO2 | — | — | VCO bias. Requires connecting 1uF capacitor to ground. |
| 43 | SysRefReq | I | — | SYSREF request input for JESD204B support. |
| 44 | VrefVCO2 | — | — | VCO supply reference. Requires connecting 10uF capacitor to ground. |
| 45 | RECAL_EN | I | — | Enables the automatic recalibration feature. |
| 46 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 47 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 48 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 49 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 50 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 51 | GND | — | Ground | Ground |
| 52 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 53 | VbiasVARAC | — | — | VCO Varactor bias. Requires connecting 10uF capacitor to ground. |
| 54 | GND | — | Ground | Ground |
| 55 | Vtune | I | — | VCO tuning voltage input. |
| 56 | VrefVCO | — | — | VCO supply reference. Requires connecting 10uF capacitor to ground. |
| 57 | VccVCO | — | — | VCO supply. Recommend connecting 0.1uF and 10uF capacitor to ground. |
| 58 | NC | — | — | No connection. Leave Unconnected |
| 59 | VregVCO | — | — | VCO regulator node. Requires connecting 1uF capacitor to ground. |
| 60 | GND | — | Ground | Ground |
| 61 | GND | — | Ground | Ground |
| 62 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 63 | NC | — | — | No connection. Pin may be grounded or left unconnected. |
| 64 | NC | — | — | No connection. Pin may be grounded or left unconnected. |