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U4087B |
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| Part Number | U4087B |
| Manufacturer | TEMIC Semiconductors |
| Description | The voice switch interface circuit U4087B is a linear integrated circuit for improvement of handsfree performance of U4090B system. The U4087B provides an optimized interface to U4090B, the necessary ... |
| Features |
D Low voltage operation: 3.0 to 7.0 V D Four point signal sensing D Monitoring system for background noise level D Case: SO 16 D Chip Disable for active/standby operation
Benefits
D Fast channel switching allows quasi duplex operation D Low current consumption
Block Diagram
TLO2 16 TLI2 15 Logic Noise detector CPT 14 VB 7 VM 13 CD GND 6 5 TLO1 2 Logic 1 TLI1
Bias
=
+ – – + TS DIRE Logic DIRA Charge RLI2 9 Logic 8 RLO2 12 CT C.T. Generator 10 TLDR 11 TLDT Discharge – + Logic 3 RLO1 4 RLI1 12610 Figure 1. Block diagram with external circuit TELEFUNKEN Semiconductors Rev. A1, 09-Sep... |
| Document |
 U4087B Data Sheet
PDF 133.92KB |
| Distributor | Stock | Price | Buy |
|---|
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | U4080B |
TEMIC Semiconductors |
Voice-Switched Circuit for Handsfree Operation |
|
| 2 | U4082B |
Unisonic Technologies |
VOICE SWITCHED SPEAKER-PHONE CIRCUIT |
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| 3 | U4083 |
TEMIC Semiconductors |
Low-Power Audio Amplifier for Telephone Applications |
|
| 4 | U4083B |
TEMIC Semiconductors |
Low-Power Audio Amplifier for Telephone Applications |
|
| 5 | U401 |
Calogic LLC |
Dual N-Channel JFET Switch |
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