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参数资料
| 型号： | SPT7871SIQ |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | 10-BIT, 100 MSPS TTL A/D CONVERTER |
| 中文描述： | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP44 |
| 封装： | CERQUAD-44 |
| 文件页数： | 7/8页 |
| 文件大小： | 64K |
| 代理商： | SPT7871SIQ |
7
9/7/98
SPT7871
PACKAGE OUTLINE
44L Cerquad
adequate thermal performance under laboratory tests. Air
flow may be required for operation at elevated ambient
temperature. Fairchild recommends that the junction tem-
perature be maintained under +150
°
C.
The thermal impedance values for the cerquad package are
θ
JC
= 3.3
°
C/W and
θ
JA =
70
°
C/W (junction to ambient in still
air with no heat sink).
Figure 3 - Clock Input Equivalent Circuit
TTL DIGITAL OUTPUT LEVELS
The SPT7871 supports TTL and some CMOS logic levels.
(Refer to minimum high voltage level for selected digital parts
that will interface with the SPT7871.) It has single-ended outputs
that are driven off a separate +5 V digital supply (DV
CC
).
THERMAL MANAGEMENT
Fairchild recommends that a heat sink be used for this device
to ensure rated performance. A heat sink in still air provides
Figure 2 - Typical Interface Circuit
Figure 4 - Digital Outputs Equivalent Circuit
AGND
CLK
26 k
AVCC
VEE
6 k
52 k
-1.3 V
(ESD)
(ESD)
NCLK
26 k
(ESD)
(ESD)
DGND
(ESD)
(ESD)
TTL OUT
DVCC
+A5
-A5.2
.01
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
DGND
.01
FB1
Analog
Input
ECL
Differential
Clock Input
.01
.01
M
INV
L
INV
+A5
+D5
Interfacing
Logics
SPT7871
AGND
VEE
AVCC
CLK
CLK
V
B
V
T
V
M
V
IN
X
X
DVCC
FB2
FB3
*
*
Notes:
1) = Line termination
X
2) = 0.01 μF chip cap. in parallel with
2.2 μF, tant cap.
3) Immediate output buffer is highly recommended
to optimize the performance due to reflection.
+5V
DGND
+D5
+
10 μF
+5 V
-5.2 V
AGND
+A5
-A5.2
+
10 μF
+
10μF
C
D
A
B
A
B
0 - 5°
E
F
G
H
1
44
INCHES
MIN
0.550 typ
0.685
0.037
0.016 typ
0.008 typ
0.027
0.006 typ
0.080
MILLIMETERS
MIN
13.97 typ
17.40
0.94
0.41 typ
0.20 typ
0.69
0.15 typ
2.03
SYMBOL
A
B
C
D
E
F
G
H
MAX
MAX
0.709
0.041
18.00
1.04
0.051
1.30
0.150
3.81
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| SPT7910 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:12-BIT, 10 MSPS, ECL, A/D CONVERTER |
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