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Information as of 2000-01-10
 Latest information online
TEA1098; Speech and handsfree IC
| Description |  |
The TEA1098 is an analog bipolar circuit dedicated to telephony applications. It includes a line interface, handset (HS) microphone and earpiece amplifiers, handsfree (HF) microphone and loudspeaker amplifiers and a duplex controller with signal and noise monitors on both channels. This IC provides a 3.35 V supply for a microcontroller or dialler and a 2.0 V filtered voltage supply for an electret microphone.
| Features | |
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Line interface
- Low DC line voltage
- Voltage regulator with adjustable DC voltage
- Symmetrical high impedance inputs (70 kW) for dynamic, magnetic or electret microphones
- DTMF input with confidence tone on earphone and/or loudspeaker
- Receive amplifier for dynamic, magnetic or piezo-electric earpieces (with externally adjustable gain)
- Automatic Gain Control (AGC) for true line loss compensation.
Supplies
- Provides a strong 3.35 V regulated supply for microcontrollers or diallers
- Provides filtered power supply, optimized according to line current
- Filtered 2.0 V power supply output for electret microphone
- PD logic input for power-down.
Handsfree
- Asymmetrical high input impedance for electret microphone
- Loudspeaker amplifier with single-ended rail-to-rail output and externally adjustable gain
- Dynamic limiter on loudspeaker amplifier to prevent distortion
- Logarithmic volume control on loudspeaker amplifier via linear potentiometer
- Duplex controller consisting of:
- Signal and noise envelope monitors for both channels (with adjustable sensitivities and timing)
- Decision logic (with adjustable switch-over and Idle mode timing)
- Voice switch control (with adjustable switching range and constant sum of gain during switching).
| Applications | |
- Line powered telephone sets.
| Datasheet | |
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| Products, packages, availability and ordering | |
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| Partnumber |
Order code (12nc) |
marking/packing |
package |
device status |
buy online |
| TEA1098H/C1 |
9352 625 86518 |
Standard marking * reel dry pack, SMD, 13" |
SOT307 |
RFS |
- |
| |
9352 625 86551 |
Standard marking * tray dry pack, bakeable, single |
SOT307 |
RFS |
- |
| |
9352 625 86557 |
Standard marking * tray dry pack, bakeable, multiple |
SOT307 |
RFS |
- |
| TEA1098H/C2 |
9352 634 48518 |
Standard marking * reel dry pack, SMD, 13" |
SOT307 |
DEV |
- |
| |
9352 634 48557 |
Standard marking * tray dry pack, bakeable, multiple |
SOT307 |
DEV |
- |
| TEA1098TV/C1 |
9352 605 88112 |
Standard marking * tube |
SOT158 |
RFS |
- |
| |
9352 605 88118 |
Standard marking * reel pack, SMD, 13" |
SOT158 |
RFS |
- |
| TEA1098TV/C2 |
9352 634 49112 |
Standard marking * tube |
SOT158 |
DEV |
- |
| |
9352 634 49118 |
Standard marking * reel pack, SMD, 13" |
SOT158 |
DEV |
- |
Please note, devices listed in the "Products, packages, availability and ordering" table marked with "WIT" are discontinued. Devices marked with "DOD" will be in the near future.
Contact your nearest sales or distributor office for the latest information on product status and availability.
| Find similar products: | |
TEA1098 links to the similar products page containing an overview of products that are similar in function or related to the part number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and products from the same functional category.
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