參數(shù)資料
型號(hào)： TDA9962HL/S1
廠商： NXP SEMICONDUCTORS
元件分類： ADC
英文描述： 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-313-2, LQFP-48
文件頁(yè)數(shù)： 11/24頁(yè)
文件大小： 480K
代理商： TDA9962HL/S1
Philips Semiconductors
TDA9962
12-bit, 3.0 V, up to 25 Msps analog-to-digital interface for CCD cameras
Objective specication
Rev. 02 — 4 August 2000
19 of 24
9397 750 07343
Philips Electronics N.V. 2000. All rights reserved.
13. Handling information
Inputs and outputs are protected against electrostatic discharge in normal handling.
However, to be completely safe, it is desirable to take normal precautions appropriate
to handling integrated circuits.
14. Soldering
14.1 Introduction to soldering surface mount packages
This text gives a very brief insight to a complex technology. A more in-depth account
of soldering ICs can be found in our
Data Handbook IC26; Integrated Circuit
Packages (document order number 9398 652 90011).
There is no soldering method that is ideal for all surface mount IC packages. Wave
soldering can still be used for certain surface mount ICs, but it is not suitable for ne
pitch SMDs. In these situations reow soldering is recommended.
14.2 Reow soldering
Reow soldering requires solder paste (a suspension of ne solder particles, ux and
binding agent) to be applied to the printed-circuit board by screen printing, stencilling
or pressure-syringe dispensing before package placement.
Several methods exist for reowing; for example, convection or convection/infrared
heating in a conveyor type oven. Throughput times (preheating, soldering and
cooling) vary between 100 and 200 seconds depending on heating method.
Typical reow peak temperatures range from 215 to 250
°C. The top-surface
temperature of the packages should preferable be kept below 220
°C for thick/large
packages, and below 235
°C small/thin packages.
14.3 Wave soldering
Conventional single wave soldering is not recommended for surface mount devices
(SMDs) or printed-circuit boards with a high component density, as solder bridging
and non-wetting can present major problems.
To overcome these problems the double-wave soldering method was specically
developed.
If wave soldering is used the following conditions must be observed for optimal
results:
Use a double-wave soldering method comprising a turbulent wave with high
upward pressure followed by a smooth laminar wave.
For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be
parallel to the transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the
transport direction of the printed-circuit board.
相關(guān)PDF資料
PDF描述
TDA9965HL/C3,118 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48
TDA9989ET SPECIALTY CONSUMER CIRCUIT, PBGA64
TDAQ67000-A5097 SPECIALTY CONSUMER CIRCUIT, PDIP28
TDAQ67000-A5194 SPECIALTY CONSUMER CIRCUIT, PDSO28
TDA6612-2 SPECIALTY CONSUMER CIRCUIT, PDIP28
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