Back to browse
Si4461
High-Performance, Low-Current Sub-GHz Transceiver, +16dBm, Major bands 142-1050 MHz, QFN-20
Schematic Symbol
Pin Configuration (21 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | SDN | input |
| 2 | RXp | input |
| 3 | RXn | input |
| 4 | TX | output |
| 5 | NC | no_connect |
| 6 | VDD | power_in |
| 7 | TXRAMP | output |
| 8 | VDD | power_in |
| 9 | GPIO0 | bidirectional |
| 10 | GPIO1 | bidirectional |
| 11 | ~{IRQ} | open_collector |
| 12 | SCLK | input |
| 13 | SDO | output |
| 14 | SDI | input |
| 15 | ~{SEL} | input |
| 16 | XOUT | passive |
| 17 | XIN | input |
| 18 | GND | power_in |
| 19 | GPIO2 | bidirectional |
| 20 | GPIO3 | bidirectional |
| 21 | GND | passive |
Footprint
ConfirmedPackage_DFN_QFN/QFN-20-1EP_4x4mm_P0.5mm_EP2.6x2.6mm_ThermalVias
Pad Layout
—
—
—
—
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
21
21
21
21
21
Pads (30)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | thru hole |
| 21 | thru hole |
| 21 | smd |
| 21 | smd |
| 21 | thru hole |
| 21 | thru hole |