NXP的TDA8004T是用于异步智能卡的完整的低成本模拟接口,它是在智能卡和微控制器之间,几乎不需要外接元件就能实现所有的电源保护和控制功能.本解决方案给出了TDA8004A的主要特性与应用,以及应用电路图.

应用:
IC card readers for banking
Electronic payment
Identification
Pay TV



Fig 1. TDA8004T 方框图



Fig 2.应用电路图



注:

(1) These capacitors must have a low ESR and must be placed near the IC (less than 1 cm).
(2) One 100 nF with low ESR near pin 17.
(3) One 100 nF or 220 nF with low ESR near contact C1 (less than 1 cm).
(4) Contact C3 should be routed far from contacts C2, C7, C4 and C8 and, better, surrounded with ground tracks.
(5) Straight and short connections between pin CGND, contact C5 and ground for the capacitors (no loop).

详情请上网:

http://www.nxp.com/acrobat_download/datasheets/TDA8004AT_3.pdf

http://www.nxp.com/acrobat_download/datasheets/TDA8004AT_3.pdf