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TZA1038HW
General description
The TZA1038HW is an analog preprocessor and laser supply circuit for DVD and CD read-only players. The device contains data amplifiers, several options for radial tracking and focus control. The preamplifier forms a versatile, programmable interface between single light path voltage output CD or DVD mechanisms to Philips digital signal processor family for CD and DVD (for example, Gecko, HDR65 or Iguana). A separate high-speed RFSUM input is available.
The device contains several options for radial tracking:
- Conventional three-beam tracking for CD
- Differential phase detector for DVD
- Push-pull with flexible left and right weighting to compensate dynamic offsets e.g. beam landing offset
- A radial error signal to allow Fast Track Count (FTC) during track jumps.
The dynamic range of this preamplifier and processor combination can be optimized for LF servo and RF data paths. The gain in both channels can be programmed separately and so guarantees optimal playability for all disc types.
The RF path is fully DC coupled. The DC content compensation techniques provide fast settling after disc errors.
The device can accommodate astigmatic, single foucault and double foucault detectors and can be used with P-type lasers with N-sub or P-sub monitor diodes. After an initial adjustment, the circuit will maintain control over the laser diode current. With an on-chip reference voltage generator, a constant stabilized output power is ensured and is independent of ageing.
An internal Power-on reset circuit ensures a safe start-up condition.
Features
- Operates with DVD-ROM, DVD+RW, DVD-RW, CD-ROM and CD-RW
- Operates up to 64 x CD-ROM and 12 x DVD-ROM
- RF data amplifier with wide, fine pitch programmable noise filter and equalizer equivalent to 64 x CD or 12 x DVD
- Programmable RF gain for DVD-ROM, CD-RW and CD-ROM applications (approximately 50 dB range to cover a large range of disc-reflectivity and OPUs)
- Additional RF sum input
- Balanced RF data signal transfer
- Universal photodiode IC interface using internal conversion resistors and offset cancellation
- Input buffers and amplifiers with low-pass filtering
- Three different tracking servo strategies:
- Conventional three-beam tracking for CD
- Differential Phase Detection (DPD) for DVD-ROM, including option to emulate traditional drop-out detection: Drop-Out Concealment (DOC)
- Advanced push-pull with dynamic offset compensation.
- Enhanced signal conditioning in DPD circuit for optimal tracking performance under noisy conditions
- Radial error signal for Fast Track Counting (FTC)
- RF only mode: servo outputs can be set to 3-state, while RF data path remains active
- Radial servo polarity switch
- Flexible adaption to different light pen configurations
- Two fully automatic laser controls for red and infrared lasers, including stabilization and an on/off switch
- Automatic selection of monitor diode polarity
- Digital interface with 3 and 5 V compatibility.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| TZA1038HW | TZA1038HW-T | 9352 738 43118 | Volume production | SOT545-2
(HTQFP48) | Reel Pack, SMD, 13" | Standard Marking | TZA1038HW
| week 43, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| TZA1038HW | 9352 738 43118 | not available |
Parametrics/similar products
| Type number | Package | Application | FUNCTION | Operating temp.(Cel) | No. of Pins | Circuit Type | Operating/Supply Voltage (MAX.-Vcc,Vp,VDD)(V) |
|---|---|---|---|---|---|---|---|
| TZA1038HW | SOT545-2
(HTQFP48) | Car radio DVD/CD Systems | Circuits | -40~85 | 48 | Compact Disc - Servo driver | 5.5 |
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