S2-LPS datasheet(57/73 Pages) STMICROELECTRONICS

tên linh kiện	S2-LPS

Giải thích chi tiết về linh kiện	Ultra-low power, high performance, sub-1 GHz transceiver

PDF	73 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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57 / 73 page

Name

Addr

Default

Bit

Field name

Description

PA_CONFIG0

00xx ® code

threshold: 418

xx11 ® clamp voltage:

0.55 V

xx10 ® clamp voltage:

0.50 V

xx01 ® clamp voltage:

0.45 V

xx00 ® clamp voltage:

0.40 V.

PA_DEGEN_ON

Enables the

'degeneration' mode

that introduces a pre-

distortion to linearize

the power control

curve.

SAFE_ASK_CAL

During a TX operation,

enables and starts the

digital ASK calibrator.

1:0

PA_FC

PA Bessel filter

bandwidth:

•

00b: 12.5 kHz

(data rate 16.2

kbps)

•

01b: 25 kHz

(data rate 32

kbps)

•

10b: 50 kHz

(data rate 62.5

kbps)

•

11b: 100 kHz

(data rate 125

kbps), (see

Section 4.4.2.1

OOK

smoothing) .

SYNTH_CONFIG2

7:3

RESERVED

PLL_PFD_SPLIT_EN

Enables increased DN

current pulses to

improve linearization

of CP/PFD (see

Table 30. Charge

pump words).

1:0

RESERVED

VCO_CONFIG

7:6

RESERVED

VCO_CALAMP_EXT_

SEL

1 → VCO amplitude

calibration is skipped

(external amplitude

word forced on VCO).

VCO_CALFREQ_EXT

_SEL

1 → VCO frequency

calibration is skipped

(external amplitude

word forced on VCO).

3:0

RESERVED

VCO_CALIBR_IN2

7:0

RESERVED

VCO_CALIBR_IN1

7:0

RESERVED

S2-LPS

DS13831 - Rev 1

page 57/73

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