Irvine, Calif.A 20-pin quad flat pack, no lead (QFN) package is now being offered with Teridian Semiconductor Corp.'s smart-card interface IC, part number 73S8024RN, making it what the company claims is the smallest chip of its type on the market.
The 20-QFN package is being targeted at the audio-video consumer electronics sector in applications such as set-top boxes, digital TVs, personal video recorders, and subscriber identification module (SIM) card readers. It has been approved by the NDS for use with its Videoguard conditional access device. NDS, which is based in the United Kingdom, is a supplier of open end-to-end digital pay TV services for the secure delivery of entertainment and information to set-top boxes and IP devices.
In addition to NDS, the 73S8024RN has been designed to provide full electrical compliance with ISO-7816-3 and EMV 4.0 (EMV2000) specifications.
The 73S8024RN embeds a low drop-out (LDO) regulator, enabling the chip to dissipate power at a lower rate than conventional parts that employ a charge-pump DC-DC converter, according to the company. The 73S8024RN die is said to save more than half a watt compared with other products.
The LDO voltage regulator provides 3- to 5-V to the card from an external power supply input, and supplies a current of at least 90-mA to the card.
The smart-card interface IC can be controlled by a dedicated control bus, which consists of digital inputs to control the interface and an interrupt output to notify the system controller of the card presence and faults. The chip also includes an ISO-7816-3
activation/deactivation sequencer that controls the card signals.
The 20-QFN package option measures 4-mm X 4-mm X 0.85-mm. Prices start at $1 each in 10,000-unit quantities.
Click here to find the 73S8024RN's datasheet: www.teridian.com/products/document_list.cfm
Teridian Semiconductor Corp., 1-714-508-8800, www.teridian.com