T0780 Datasheet, PDF (8/11 Pages) ATMEL Corporation – 800 MHz - 1000 MHz High Linearity SiGe Active Receive Mixer

Bill of Material
Component Designator
IC1
J1, J2, J3
T1
L1
L7, L9
C4, C5, C12, C13
C14, C15
C2, C3
C1
T2, T3
C6, C10
C7, C11
Value
1:1
1 µH
see
Table 1
27 pF
100 pF
120 pF
10 µF
1:1
15 pF
18 pF
Vendor
Atmel
Johnson
Components^™
Mini-Circuits^®
Würth Elektronik^®
Würth Elektronik
Vishay^®
Vishay
Vishay
KEMET^®
Panasonic^®
Vishay
Vishay
Part Number
T0780
742-0711-841
TC1-1
74476401
Description
SiGe receiver mixer
SMA connector, end launch with tab, for
1.07 mm board
IF transformer
Inductor, 1210 footprint, minimum 200 mA rating
744786110
Inductor, 0603 footprint, high Q series
VJ0402A 270JXXA_
VJ0402A101JXXA_
VJ0402A121JXXA_
T491A106_010AS
EHF-FD1618
VJ0402A150JXXA_
VJ0402A180JXXA_
Capacitor, 0402 footprint
Capacitor, 0402 footprint
Capacitor, 0402 footprint
Tantal chip capacitor, size A
RF transformer
Capacitor, 402 footprint
Capacitor, 402 footprint
The T0780 utilizes an IF tank circuit to maximize performance across the entire IF band-
width. the off-chip inductors L7 and L9 resonate with an on-chip capacitor (4 pF) to pro-
vide IF tunability. therefore, L7 and L9 must be selected such that the resonance occurs
at the desired IF.
The following table provides the inductor values required on the evaluation board for
some common intermediate frequencies. By default, all evaluation board are shipped
with L7 = L9 = 100 nH, resulting in a 200 MHz resonant IF.
Table 1. IF Tank Circuit
IF (MHz) Typical
70
150
200
300
L7, L9 (nH)
680
150
100
39
Würth Elektonik
Part Number
744780680
74478625
744786110
744786131
8 T0780 [Preliminary]
4525D–SIGE–10/03