Si4704/05-C40
28 Rev. 1.0
7. Ordering Guide
Part Number* Description Package
Type
Operating
Temperature
Si4704-C40-GM FM Broadcast Radio Receiver QFN
Pb-free
–20 to 85 °C
Si4705-C40-GM FM Broadcast Radio Receiver with RDS/RBDS QFN
Pb-free
–20 to 85 °C
*Note: Add an “(R)” at the end of the device part number to denote tape and reel option; 2500 quantity per reel.
Si4704/05-C40
Rev. 1.0 29
8. Package Markings (Top Marks)
8.1. Si4704 Top Mark
Figure 14. Si4704 Top Mark
8.2. Si4705 Top Mark
Figure 15. Si4705 Top Mark
8.3. Top Mark Explanation
Mark Method: YAG Laser
Line 1 Marking: Part Number 04 = Si4704
05 = Si4705
Firmware Revision 40 = Firmware Revision 4.0
Line 2 Marking: R = Die Revision C = Revision C Die.
TTT = Internal Code Internal tracking code.
Line 3 Marking: Circle = 0.5 mm Diameter
(Bottom-Left Justified)
Pin 1 Identifier.
Y = Year
WW = Workweek
Assigned by the Assembly House. Corresponds to the last
significant digit of the year and workweek of the mold date.
0440
CTTT
YWW
0540
CTTT
YWW
Si4704/05-C40
30 Rev. 1.0
9. Package Outline: Si4704/05-GM
Figure 16 illustrates the package details for the Si4704/05. Table 15 lists the values for the dimensions shown in
the illustration.
Figure 16. 20-Pin Quad Flat No-Lead (QFN)
Table 15. Package Dimensions
Symbol Millimeters Symbol Millimeters
Min Nom Max Min Nom Max
A 0.50 0.55 0.60 f 2.53 BSC
A1 0.00 0.02 0.05 L 0.35 0.40 0.45
b 0.200.250.30 L1 0.00 0.10
c 0.27 0.32 0.37 aaa 0.05
D 3.00 BSC bbb 0.05
D2 1.65 1.70 1.75 ccc 0.08
e 0.50 BSC ddd 0.10
E 3.00 BSC eee 0.10
E2 1.65 1.70 1.75
Notes:
1. All dimensions are shown in millimeters (mm) unless otherwise noted.
2. Dimensioning and tolerancing per ANSI Y14.5M-1994.

SI4705-C40-GM

Mfr. #:
Manufacturer:
Silicon Labs
Description:
Tuners Si4705 rev C FM Radio Tuner w/ RDS/RBDS, dig out, internal antenna 3x3x0.55 20-pin QFN, lead free
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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