SE4100L is a low power GPS receiver that supports L1 signal reception at 1575.42MHz. The chip uses a low IF architecture and integrates amplifier, oscillator, mixer and demodulation functions. The external component count is low, requiring only a 16.368MHz crystal and 11 passive components in its minimum configuration. The chip uses a 24-pin LPCC package and has a power consumption of only 30mW. SE4100L supports two digitally controlled shutdown modes, which can completely power off the chip or only power off the 16MHz clock supply to the baseband processor. SE4100L also supports a switchable gain LNA, which can be used with a local passive antenna or a remote active antenna without changing the circuit configuration. The on-chip VCO and PLL generate the required LO frequency and are locked to an external crystal.
The SE4100L is an integrated GPS receiver IC designed for mobile phone, PDA accessories, portable navigation, personal security, asset tracking, and telematics equipment. It operates on a low‑power 30 mW budget, uses a 4 × 4 mm 24‑pin LPCC package, and requires only a 16.368 MHz crystal and 11 passive components for minimum operation. The device includes an on‑chip LNA with switchable gain, a fully integrated VCO/PLL, and outputs a 1‑bit quantized 4.092 MHz digital IF.
The datasheet details pin‑out, functional block diagrams, absolute maximum ratings, recommended operating conditions, DC/AC electrical characteristics, and package dimensions. It also provides application notes on antenna current monitoring, filter design, PLL loop filter, and crystal oscillator layout, along with contact information for SiGe Semiconductor.
| Power consumption | 30 mW |
|---|---|
| Package | 24‑pin LPCC, 4 × 4 mm |
| Supply voltage (Vop) | 2.7 V – 3.6 V |
| Total supply current (all circuits active) | 9 mA |
| LNA noise figure | 1.3 dB typ. |
| IF centre frequency | 4.092 MHz |
| VCO centre frequency | 3142.656 MHz |
| Crystal frequency | 16.368 MHz |
| Operating temperature range | -40 °C to +85 °C |
| Storage temperature range | -65 °C to +150 °C |
The SE4100L consumes about 30 mW of power.
Only a 16.368 MHz crystal and 11 passive components are required.
The output is a 1‑bit quantized 4.092 MHz digital IF at CMOS levels.
The device operates with a supply voltage between 2.7 V and 3.6 V.