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參數資料
| 型號： | 935261327518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | ADC |
| 英文描述： | DUAL 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP64 |
| 封裝： | PLASTIC, SOT-314-2, LQFP-64 |
| 文件頁數： | 9/26頁 |
| 文件大小： | 262K |
| 代理商： | 935261327518 |
1999 Sep 16
17
Philips Semiconductors
Objective specication
Dual 8-bit, 100 Msps A/D converter with
DPGA
TDA8798
TEST AND APPLICATION INFORMATION
Fig.7 Application diagram.
handbook, full pagewidth
100 nF(1)
TDA8798HL
MGM867
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
3.3 V
B7
B6
B5
B4
B3
B2
B1
B0
A0
A1
A2
A3
A4
A5
A6
A7
B7
B6
B5
B4
B3
B2
B1
B0
A0
A1
A2
A3
A4
A5
A6
A7
DPGA2N
DPGA2
DPGAC2
Vref2
Vref1
VDDA2
VIN2N
VIN2
VIN2N
VIN2
VSSA2
VSSA1
VIN1
VIN1N
VIN1
VIN1N
VDDA1
DPGAC1
DPGA1
DPGA1N
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
BUF2
BUF2N
V
oref2
V
DDA4
V
SSA4
CLK2N
CLK2
V
SSD2
V
DDD2
SR
V
DDO2
V
SSO2
BUF1
BUF1N
V
oref1
V
DDA3
V
SSA3
CLK1N
CLK1
V
SSD1
V
DDD1
SMODE
SEN2
SDATA
SCLK
SEN1
SMODE
SEN2
SDATA
SCLK
SEN1
V
DDO1
V
SSO1
VSSO
VSSD
VSSA
TE
OE
TE
OE
VSSD
VSSO
VSSD
VSSA
SR
TEST
VSSD
DPGAEN
100 nF(1)
3.3 V
VSSO
100 nF(1)
3.3 V
VSSD
100 nF(1)
3.3 V
VSSA
100 nF(1)
100 nF
(2)
68 pF(3)
100 nF(4)
100 nF
(2)
100 nF
(2)
100 nF
(2)
100 nF
100 nF(4)
3.3 V
VSSA
100 nF(1)
3.3 V
VSSA
100 nF(1)
VSSD
Analog and digital supplies must be separate and decoupled.
(1) Supply decoupling capacitor must be placed as close as possible to the chip’s pin. Value may need changing depending on the external filter
characteristics.
(2) Capacitor may be replaced when an external filter is used with AC coupling.
(3) Capacitor value may be changed to adjust settling time between DPGA gain changes.
(4) Capacitor value may need changing depending on the high-pass cut-off frequency of the external filter.
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