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BK1661 A fully integrated single-chip L1 frequency band GNSS solution designed specifically for applications that require low power consumption and high performance.
Classification:
IC/Optical Lotus
WIFI IC
- Product Description
-
- Commodity name: BK1661 A fully integrated single-chip L1 frequency band GNSS solution designed specifically for applications that require low power consumption and high performance.
Overview
BK1661 is a fully integrated single-chip L1 band GNSS solution designed for applications that require low power consumption and high performance. BK1661 can achieve optimized multi-mode signal tracking. At the same time, it has implemented advanced anti multipath and anti-interference RF front-end, significantly improving actual positioning and TTFF performance.
BK1661 adopts a low-power design that combines advanced software and hardware. It can provide ultra-low power consumption without compromising performance.
feature
GNSS section
-120 tracking channels and dedicated search engine
-L1 frequency supports GPS L1, Beidou B1, Galileo E1, QZSS L1, GLONASS G1
-Cold start sensitivity: -148 dBm
-Hot start sensitivity: -159 dBm
-Re capture sensitivity: -159 dBm
-Tracking sensitivity: -165 dBm
-Update frequency: 1~20 Hz (BK1661S only supports 1Hz)
-Horizontal positioning accuracy: 1.5 m CEP
-Ground speed accuracy: 0.1 m/s CEP
-Cold start first positioning time: 28 seconds
-AGPS first positioning time: 1.5 seconds
-Hot start positioning time: 1.0 s
-Support SBAS
-Supports AGPS
-Support NMEA0183
Processor and Memory
-32-bit DSP runs at 350 MHz (BK1661S 198Mhz)
-Single precision and double precision floating-point operations support
- Embedded Flash
- RAM/ROM
- 32 KB Cache
- 256-bit eFuse
-UART/JTAG for debugging and downloading
Clock scheme
-External oscillation circuit: 26 MHz TCXO
-Internal oscillation circuit: in conjunction with a 26 MHz crystal oscillation circuit (X26M), a 32 kHz crystal oscillation circuit (X32K), and a ring array oscillation circuit (ROSC32K)
- 350 MHz PLL
power supply scheme
-1.8 to 3.6V VBAT main power supply
-Built in power on reset (POR) and undervoltage reset logic (BOD)
-Built in multiple LDOs
-Built in DC-DC converter
-Low power consumption:
-L1/L5 continuous tracking mode: 20 mA
-L1 continuous tracking mode: 12 mA
-Sleep standby mode: 14 μ A
peripheral interface
- 17 GPIOs
- 3x UART, One of them has a download function
- 1x I2C
- 1x SPI
-10 bit SAR ADC, 1 channel
-1x hardware watchdog
-2x Universal 32-bit Counter
-1x low-power RTC counter
-1x temperature sensor
encapsulation
-QFN32 package, 4 mm x 4 mm
-Working temperature range: -40 to+85 ° C
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