Great Scott Gadgets HackRF - HackRF Hardware Documentation; HackRF Expansion Interface

HackRF
4.9 Hardware Documentation
Schematic diagram, assembly diagram,and bill of materials can be found at https://github.com/mossmann/hackrf/tree/
master/doc/hardware
4.10 Expansion Interface
The HackRF One expansion interface consists of headers P9, P20, P22, and P28. These four headers are installed on
the commercial HackRF One from Great Scott Gadgets.
4.10.1 P9 Baseband
A direct analog interface to the high speed dual ADC and dual DAC.
Pin Function
1 GND
2 GND
3 GND
4 RXBBQ-
5 RXBBI-
6 RXBBQ+
7 RXBBI+
8 GND
9 GND
10 TXBBI-
11 TXBBQ+
12 TXBBI+
13 TXBBQ-
14 GND
15 GND
16 GND
12 Chapter 4. HackRF One