1996 Jan 15 10
Philips Semiconductors Product specification
Advanced pager receiver UAA2080
Table 2 Tolerances of components shown in Figs 3, 4 and 5 (notes 1 and 2)
Notes
1. Recommended crystal: f
XTAL
= 78.325 MHz (crystal with 8 pF load), 3rd overtone, pullability >2.75 × 10−6/pF
(change in frequency between series resonance and resonance with 8 pF capacitor at 25 °C), dynamic resistance
R1 < 30 Ω, ∆f=±5×10−6 for T
amb
= −10 to +55 °C with 25 °C reference, calibration plus aging tolerance:
−5 × 10−6to +15 × 10−6.
2. This crystal recommendation is based on economic aspects and practical experience. Normally the spreads for R1,
pullability and calibration do not show their worst case limits simultaneously in one crystal. In such a rare event, the
tuning range will be reduced to an insufficient level.
COMPONENT
TOLERANCE
(%)
REMARK
Inductances
L1, L10 ±5Q
min
= 145 at 470 MHz
L2, L3, L6, L7 ±20 Q
min
= 50 at 470 MHz; TC = (+25 to +125) × 10−6/K
L4, L5 ±10 Q
min
= 40 at 470 MHz; TC = (+25 to +125) × 10−6/K
L8 ±10 Q
min
= 30 at 156 MHz; TC = (+25 to +125) × 10−6/K
L9 ±10 Q
min
= 40 at 78 MHz; TC = (+25 to +125) × 10−6/K
Resistors
R1 to R5 ±2 TC = +50 × 10−6/K
Capacitors
C1, C2, C7, C8, C9 ±5TC=(0±30) × 10−6/K; tan δ≤30 × 10−4 at 1 MHz
C3, C6, C12, C23 − TC = (−750 ±300) × 10
−6
/K; tan δ≤50 × 10−4at 1 MHz
C4, C5, C14, C18 to C22 ±10 TC = (0 ±30) × 10
−6
/K; tan δ≤10 × 10−4 at 1 MHz
C10, C11 ±5TC=(0±30) × 10
−6
/K; tan δ≤21 × 10−4 at 1 MHz
C13 ±20
C16 − TC = (−1700 ±500) × 10
−6
/K; tan δ≤50 × 10−4at 1 MHz
C17 ±5TC=(0±30) × 10
−6
/K; tan δ≤26 × 10−4at 1 MHz