RSL10
Table 6. RECOMMENDED EXTERNAL COMPONENTS:
Components
Cap (VBAT−VSSA)
Cap (VDDO−VSSD)
Cap (VDDRF−VSSRF)
Cap (VCC−VSSA)
Cap (VDDA−VSSA)
Cap (CAP0−CAP1)
Inductor (DC−DC)
Xtal_32 kHz
Function
Recommended typical value
Tolerance
20%
VBAT decoupling
VDDO decoupling
VDDRF decoupling
VCC decoupling
VDDA decoupling
4.7 mF + 100 pF (Note 12)
1 mF
20%
2.2 mF
20%
Low ESR 2.2 mF (Note 13) or 4.7 mF
20%
1 mF
1 mF
20%
Pump capacitor for the charge pump
DC−DC converter inductance
Xtal for 32 kHz oscillator
20%
Low ESR 2.2 mH (See Table 7 below)
20%
− MC – 306, Epson
− CM8V−T1A, Micro Crystal Switzerland
Xtal_48 MHz
Xtal for 48 MHz oscillator
External harmonic filter
8Q−48.000MEEV−T, TXC Corporation, Taiwan
RF filter (Note 14)
1.5 pF / 3 nH / 1.5 pF / 1.8 nH
20%
12.The recommended decoupling capacitance uses 3 capacitors with the values specified.
13.Example: AMK105BJ225_P, Taiyo Yuden.
14.For improved harmonic performance in environments where RSL10 is operating in close proximity to smartphones or base stations, FBAR
filters such as the Broadcom ACPFP−7924 can be applied instead of the suggested discrete harmonic filter.
Table 7. RECOMMENDED DC−DC CONVERTER INDUCTANCE TABLE
Manufacturer
Part Number
Case Size
Comments
Taiyo Yuden
CKP2012N_2R2
0805 SMD with
max
A degradation of 1 dB in the RX sensitivity is expected in DC−DC mode
T
= 1.0 mm
(Vbat = 3.3 V) versus LDO mode operation.
Taiyo Yuden
CBMF1608T2R2M
0603 SMD with
= 1.0 mm
A degradation of <1 dB in RX sensitivity is expected in DC−DC mode
(Vbat = 3.3 V) versus LDO mode operation. Also, the current drawn from
the battery will be 4−10% higher than when the CKP2012N_2R2 is used
depending on operation mode and settings.
T
max
PCBᚎᙱᓧԷ
5. ᚎᙱPCB៖ၴᄳꣾЋ꣼ዯ，Åꣿᅷ꤀ଢ଼ꢆꢓሇ்。
6. ၴᄳ✈ૺยPCB，ၖईଉꢈԙꢿꢋꢮ꤁⛻យꢆͥยᚎꣀ꤂Ԛ，Åꢁᅑڭ
ꢓሇ்ꢆᤢᝃꢋ。
7. ᐠᣩꢋꢗꢋիၴᄳꢨꢱꢃሇ்ꢓꢋ，ฝ
்ꣶꣷ͖꣸ၴჵꣂꢕꣵ。꤃{ꢋꢗၴᄳ꣸rϦ꣮ꣀ，ฝ꣡
ꣀई⛽
ย(ꢨꢱPCB⛺ꢆ꤄ꢈ®ꢡჵꣂ꤅ᖅꢊꢋꢗ)。
9. ꢑᄳꢆDC−DC̣Öᚎꣀ٬ภෙ
DC−DCᰁჯ⛻ꢆRXꢄᜯႆሇ்ꢊ͓꤆ꢽ。
Ỉዯ： ꢒꢓꢔꢕꢁꢖŻfᣩ͓PCBꢔꢕꢏꢗꢘǁꢙ，ꢚꢛꢜwww.onsemi.cnꢝꢞ。
www.onsemi.cn
9
ONSEMI [ ONSEMI ]
