TDA8769 Datasheet, PDF (18/28 Pages) NXP Semiconductors – 12-bit, 60/80/105 Msps Analog-to-Digital Converter (ADC) Nyquist/high IF sampling

Philips Semiconductors
12-bit, 60/80/105 Msps Analog-to-Digital Converter
(ADC) Nyquist/high IF sampling
Objective specification
TDA8769
11.4 Demonstration board
handbook, full pagewidth
R125680
J1 C1
TR1
T1_6T_KK81
IN
220 nF
AGND
4
R1
100 Ω
5
6
3 ^TB1
2
1
VCCA _R3
100 Ω
AGND
CMADC
50 Ω
AGND
VCCD1
ON
DGND
1K2
VCCA
TH
S1
VCCD1
AGND AGND DGND
DGND
R2
50 Ω
R125680
J2
CLK
C14
330
nF
VCCA
S2
48 47 46 45 44 43 42 41 40 39 38 37
DGND
P1 EXT
5 kΩ
AGND
1K2 CMADC
1
VCCA1 ₂
AGND ^VCCA
VCCA3
3
AGND
AGND3
4
CCS
36
35 ^VCCO
D0
34
D1
33
DEC
5
IC1
D2
32
n.c.
6
C4
n.c.
7
TDA8769HW
D3
31
D4
30
100
n.c.
nF
8
n.c.
9
D5
29
D6
28
AGND
n.c.
10
D7
27
TB2
VCCA
VCCA
C5
VCCA
VREF
11
AGND
n.c.
12
D8
26
D9
25
13 14 15 16 17 18 19 20 21 22 23 24
R5
100 nF
1.2 kΩ
S3
AGND
P2
EXT
1K2
1 kΩ
DGND
DGND
DGND
R4
2.4 kΩ
VCCD2
VCCD2
VCCD2
AGND
ON
S4
S8
ON
DEL1
DEL0
VCCO
DGND
DGND
VCCD2
ON
S6
1K2
OTC
DGND
VCCD2 VCCO
S7
1K2
OFF
IC4 2
R125680
J3
CEN
DGND C12
10
nF
5
VCC
3
GND
R9
50 Ω
4 ^74AHC1GUO4GW
FL1
VCCA (44)
470D_0D0_S
(2/3)
DGND
R11
150 Ω
4
R10
150 Ω
1
C2
330
nF
AGND
AGND
C3
100
nF
AGND
C18 C19
10
10
nF
nF
3
2
VCCO
IR
D3
LS6T670
FL3
VCCD1 (40)
470D_0D0_S
DGND
DGND
PCN12A_44P_2.54DS
J1
B1
A1
B2
A2
A3
B3
A4
B4
A5
CSS
B5
A6
D0
B6
A7
A8
B7
A9
B8 _A10
B9 A11
B10 ^A12
A13
B11 _A14
B12 A15
B13 A16
B14 ^A17
A18
B15 _A19
B16
B17
B18
B19
B20
TRIG
A20
B21 _A21
B22 A22
DGND
DGND
C13
C15 C17
330
100 10
nF
nF
nF
DGND
DGND
DGND
FL2
VCCD2 (17)
470D_0D0_S
C11
330
nF
DGND
C6
C20
100 10
nF
nF
TM2
DGND TM3
FL4
DGND ^HF70A08S AGND
12 V J5
D1
BYD17G _IN
1
C7
MSTBA2.5_20_5D8 20 V ₂₂
µF
GND J5
2
DGND
DGND
MC7805D2T _OUT
1 _IC2 3
C8
2
16 V 4.7
GND
µF
DGND
DGND
D2
PWR
LGT679_C0
VCCO (35)
TM1
IN ^LM317D2T OUT ^TP1
3
IC3 ²
R6
750 Ω
C9
470
nF
1
ADJ
R8
240
Ω
C10
1µF
C16
10
nF
DGND
R7
330
Ω
DGND
DGND
DGND
MBL876
Fig.9 Demonstration board schematic.
2003 Dec 09
18