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TZA1045 数据表(PDF) 2 Page - NXP Semiconductors |
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TZA1045 数据表(HTML) 2 Page - NXP Semiconductors |
2 / 20 page 2003 Jun 26 2 Philips Semiconductors Preliminary specification Photodiode and amplifier IC for CD and DVD applications TZA1045 FEATURES • High frequency RF amplifiers (typical bandwidth = 240 MHz) • Suitable for all CD (785 nm) and DVD (655 nm) read/write applications • Four high bandwidth central outputs (A, B, C, and D), four satellite outputs (E, F, G, and H) and one high bandwidth differential output (RFP, RFN) • Internal current clamp and current fold back (power reduction) • Versatile programmable gain switches (CD/DVD, H/L, and R/W) • Single 5 V supply • Current outputs for optimum signal transport over flex cable • Small outline package SSOP16T with good positional tolerance. APPLICATIONS • CD and DVD read/write applications. GENERAL DESCRIPTION The TZA1045 is a single optical pick-up IC for read/write systems and is suitable for CD and DVD applications. The device contains eight RF amplifiers for the central and satellite diodes and one differential RF amplifier (RFP and RFN) which handles the sum of the four A, B, C, and D central diode signals. Programming the gain is a very versatile way to optimize interfacing between the TZA1045 and the pre-amplifier. The gain can be programmed for CD or DVD media with the gain switch CD/DVD. The H/L switch can be used for CD-R or CD-RW discs. Gain switch R/W is used to reduce the gain during writing. During writing, the high peak signals for the central and satellite segments are clamped internally and the output currents of the A, B, C, D, E, F, G, and H segments are reduced to almost zero (fold back) to minimize the power consumption. All outputs are current outputs that can supply a maximum of 8 mA. In CD-R writing mode, the clipping level of the output currents is between 5 and 8 mA. The SSOP16T package has a low spread on the z tolerance. The z tolerance is measured between the diodes (chip surface) and the bottom of the leads. The diodes have an offset of 54 µm in the ‘y’ direction with respect to the leadframe centre and a tolerance of ±50 µm in both ‘x’ and ‘y’ directions. The diodes are placed under an angle of 45 °±1° with respect to the leadframe of the module. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TZA1045TS SSOP16T plastic shrink small outline package/transparent; 16 leads (straight); body width 4.4 mm SOT734-1 |
类似零件编号 - TZA1045 |
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类似说明 - TZA1045 |
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