# CC1100RTKR

**Texas Instruments** · RF Transceiver ICs · QFN-20-EP(4x4)

CC1100RTKR from Texas Instruments, in a QFN-20-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SCLK | input | Serial configuration interface clock input. |
| 2 | SO (GDO1) | output | Serial configuration interface data output; optional general output pin when CSn is high. |
| 3 | GDO2 | output | Digital output pin for general use, selectable for test signals, FIFO status, clear channel indicator, clock output down-divided from XOSC, or serial output RX data. |
| 4 | DVDD | power_in | 1.8 - 3.6 V digital power supply for digital I/Os and for the digital core voltage regulator. |
| 5 | DCOUPL | power_out | 1.6 - 2.0 V digital power supply output for decoupling; intended for CC1100 only and cannot be used to supply other devices. |
| 6 | GDO0 (ATEST) | bidirectional | Digital I/O for general use (test, FIFO status, clear channel indicator, clock output, serial RX/TX data) and analog test I/O for prototype and production testing. |
| 7 | CSn | input | Serial configuration interface chip select input. |
| 8 | XOSC_Q1 | bidirectional | Crystal oscillator pin 1, or external clock input. |
| 9 | AVDD | power_in | 1.8 - 3.6 V analog power supply connection. |
| 10 | XOSC_Q2 | bidirectional | Crystal oscillator pin 2. |
| 11 | AVDD | power_in | 1.8 - 3.6 V analog power supply connection. |
| 12 | RF_P | bidirectional | Positive RF input signal to the LNA in receive mode and positive RF output signal from the PA in transmit mode. |
| 13 | RF_N | bidirectional | Negative RF input signal to the LNA in receive mode and negative RF output signal from the PA in transmit mode. |
| 14 | AVDD | power_in | 1.8 - 3.6 V analog power supply connection. |
| 15 | AVDD | power_in | 1.8 - 3.6 V analog power supply connection. |
| 16 | GND | power_in | Analog ground connection. |
| 17 | RBIAS | bidirectional | External bias resistor for reference current. |
| 18 | DGUARD | power_in | Power supply connection for digital noise isolation. |
| 19 | GND | power_in | Ground connection for digital noise isolation. |
| 20 | SI | input | Serial configuration interface data input. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-20-EP(4x4) |
| Category | Radio Frequency Chip/Antenna |
| Pins | 21 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage |  | -0.3 |  | 3.9 | V | All supply pins must have the same voltage | 7 |
| Voltage on any digital pin |  | -0.3 |  | 3.9 | V | VDD+0.3 max 3.9 | 7 |
| Voltage on the pins RF_P, RF_N, and DCOUPL |  | -0.3 |  | 2 | V |  | 7 |
| Voltage ramp-up rate |  |  |  | 120 | kV/µs |  | 7 |
| Input RF level |  |  |  | 10 | dBm |  | 7 |
| Storage temperature range |  | -50 |  | 150 | °C |  | 7 |
| Solder reflow temperature |  |  |  | 260 | °C | According to IPC/JEDEC J-STD-020C | 7 |
| ESD |  |  |  | 500 | V | According to JEDEC STD 22, method A114, Human Body Model | 7 |
| Operating temperature |  | -40 |  | 85 | °C |  | 7 |
| Operating supply voltage |  | 1.8 |  | 3.6 | V | All supply pins must have the same voltage | 7 |
| Frequency range 300-348 MHz |  | 300 |  | 348 | MHz |  | 7 |
| Frequency range 400-464 MHz |  | 400 |  | 464 | MHz |  | 7 |
| Frequency range 800-928 MHz |  | 800 |  | 928 | MHz |  | 7 |
| Current consumption, SLEEP state |  |  | 400 |  | nA | Voltage regulator to digital part off, register values retained (SLEEP state). All GDO pins programmed to 0x2F (HW to 0) | 8 |
| Current consumption, XOFF state |  |  | 160 |  | µA | Voltage regulator to digital part on, all other modules in power down (XOFF state) | 8 |
| Current consumption, IDLE state |  |  | 1.6 |  | mA | Only voltage regulator to digital part and crystal oscillator running (IDLE state) | 8 |
| Current consumption, FSTXON state |  |  | 8.2 |  | mA | Only the frequency synthesizer is running (FSTXON state) | 8 |
| Current consumption, RX 250 kBaud at sensitivity limit |  |  | 15.9 |  | mA | Receive mode, 250 kBaud, reduced current, input at sensitivity limit | 8 |
| Current consumption, TX +10 dBm output power |  |  | 27 |  | mA | Transmit mode, +10 dBm output power | 8 |
| Current consumption, TX 0 dBm output power |  |  | 14.8 |  | mA | Transmit mode, 0 dBm output power | 8 |
| Current consumption, TX -6 dBm output power |  |  | 12.3 |  | mA | Transmit mode, -6 dBm output power | 8 |
| Output power, highest setting |  |  | 10 |  | dBm | Delivered to a 50Ω single-ended load via CC1100EM reference design RF matching network | 13 |
| Output power, lowest setting |  |  | -30 |  | dBm | Delivered to a 50Ω single-ended load via CC1100EM reference design RF matching network | 13 |
| Crystal frequency |  | 26 | 26 | 27 | MHz |  | 14 |
| Crystal tolerance |  | -40 |  | 40 | ppm | Total tolerance including a) initial tolerance, b) crystal loading, c) aging, and d) temperature dependence | 14 |
| Crystal ESR | ESR |  |  | 100 | Ω |  | 14 |
| Crystal oscillator start-up time |  |  | 150 |  | µs | Measured on the CC1100EM reference designs using crystal AT-41CD2 from NDK | 14 |
| Calibrated RC oscillator frequency |  | 34.7 | 34.7 | 36 | kHz | Calibrated RC Oscillator frequency is XTAL frequency divided by 750 | 15 |
| Frequency accuracy after calibration |  | -1 |  | 1 | % |  | 15 |
| RC oscillator temperature coefficient |  |  | 0.5 |  | %/°C | Frequency drift when temperature changes after calibration | 15 |
| RC oscillator supply voltage coefficient |  |  | 3 |  | %/V | Frequency drift when supply voltage changes after calibration | 15 |
| RC oscillator initial calibration time |  |  | 2 |  | ms | When the RC Oscillator is enabled, calibration is continuously done in the background as long as the crystal oscillator is running | 15 |
| PLL turn-on / hop time |  | 85.1 | 88.4 | 88.4 | µs | Time from leaving the IDLE state until arriving in the RX, FSTXON or TX state, when not performing calibration. Crystal oscillator running. | 15 |
| PLL calibration time |  | 694 | 721 | 721 | µs | Calibration can be initiated manually or automatically before entering or after leaving RX/TX | 15 |
| Analog temperature sensor temperature coefficient |  |  | 2.45 |  | mV/°C | Fitted from -20 °C to +80 °C | 16 |
| Logic 0 input voltage |  | 0 |  | 0.7 | V |  | 16 |
| Logic 0 output voltage |  |  |  | 0.5 | V | For up to 4 mA output current | 16 |
| Logic 0 input current |  |  |  | -50 | nA | Input equals 0V | 16 |
| Logic 1 input current |  |  |  | 50 | nA | Input equals VDD | 16 |
| Power-up ramp-up time |  |  | 5 |  | ms | From 0V until reaching 1.8V | 16 |
| Power off time |  |  | 1 |  | ms | Minimum time between power-on and power-off | 16 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | Abs |  | Human Body Model Table 1: Absolute Maximum Ratings | 7 |

## CAD (KiCad official)

- Symbol: `CC1100RTKR`
- Footprint: `Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm`
- 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `cc1100rtkr-etched.step` / `cc1100rtkr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cc1100rtkr.step` / `cc1100rtkr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/cc1100) (101 pp, sha256 `2117b40c8c2d5713`, retrieved 2026-11-02, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cc1100rtkr-datasheet.pdf)