CXD2951GA-4 is a single-chip LSI dedicated to the global positioning system GPS. It adopts advanced signal processing mechanism, which not only improves sensitivity, but also greatly shortens the measurement time. CXD2951GA-4 integrates Radio and baseband blocks, which is very suitable for automotive, mobile phones, handheld navigation, mobile computers and other positioning applications.
The CXD2951GA-4 is a single‑chip GPS LSI that integrates radio and base‑band functions in a CMOS IC, suitable for automotive, mobile phone, handheld navigation and other positioning applications. It offers high sensitivity, low power consumption and a 12‑channel GPS receiver.
The document provides electrical characteristics, pin descriptions, performance data, application circuit examples and mechanical dimensions for the 176‑pin LFLGA package. This manual is written in Japanese.
| Number of GPS channels | 12 |
|---|---|
| Receiver frequency (L1) | 1575.42 MHz |
| Reference clock (TCXO) | 18.414 MHz |
| Program ROM size | 288 KB |
| Data RAM size | 72 KB |
| Backup‑mode RAM size | 8 KB |
| ADC resolution | 10‑bit successive‑approximation |
| Operating temperature range | -40 °C to +85 °C |
| Tracking sensitivity | -152 dBm (average) |
| Acquisition sensitivity | -139 dBm (average) |
| Cold‑start time | 40 s (average) |
| Positioning accuracy (2‑DRMS) | ≈ 2 m |
| Typical power consumption (low‑power mode) | ≈ 30 mW |
| Total gain (typical) | 100 dB |
| Noise figure (typical) | 8 dB |
| Phase noise @10 kHz offset | -70 dBc/Hz |
It supports 12 channels, allowing simultaneous reception of up to 12 satellites.
The device operates from –40 °C to +85 °C.
The reference TCXO clock frequency is 18.414 MHz.
Typical 2‑DRMS positioning accuracy is about 2 meters.