U4256BM-R Datasheet, PDF (16/19 Pages) ATMEL Corporation – Frequency Synthesizer for Radio Tuning

Electrical Characteristics (Continued)
Test Conditions (unless otherwise specified): V_S = 8.5 V, T_amb = 25°C.
No. Parameters
Test Conditions
Pin Symbol Min.
Typ.
Max.
Unit
11.6 Set-up time
16-18
t_s
100
ns
11.7 Hold time EN
18
t_HEN
250
ns
11.8 Hold time DATA
16
t_HDA
0
ns
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Type*
D
D
D
Figure 16. Application Circuit
EN
CLK DATA
GND
C _{12 100 nF}
C₈
47 pF
R₅
5.1 k
C₉
*)
*)
10.25 MHz
*) depends on
crystal
20
19
18
17
16
15
14
C₁
R₂
10 pF
600
fOSC
BUS
LOGIC
FM
VCO
Vtune
DAC's
1
2
3
4
5
6
7
R₄
8.2 k
C₆
330 pF
C ₁₆
C _{15 10 nF}
C₅
C _{4 100 nF}
C₇
10 nF
C _{14 10 nF}
10 nF
100 mF
R₃
100
13
12
11
OSC
Switches
8
9
10
DAC1 DAC2 DAC3 VS SWO1 SWO2 SWO3 SWO4
8 ... 12 V
16 U4256BM-R
4562C–AUDR–08/04