| 发明名称 | Determining automatic gain control levels | ||
| 摘要 | An apparatus comprises an integrated circuit (IC) and a resistor external to the IC. The IC includes a current output digital-to-analog converter (IDAC) circuit configured to provide an adjustable specified current to a resistor external to the apparatus, a voltage sensing circuit configured to sense the voltage of the external resistor, and an automatic gain control (AGC) circuit configured to receive threshold information using the adjustable specified current. | ||
| 申请公布号 | US8824701(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201113159167 | 申请日期 | 2011.06.13 |
| 申请人 | Fairchild Semiconductor Corporation | 发明人 | Fortier Ray |
| 分类号 | H03L5/00;H03G3/00;H03F99/00;H04R25/00 | 主分类号 | H03L5/00 |
| 代理机构 | Schwegman, Lundberg & Woessner, P.A. | 代理人 | Schwegman, Lundberg & Woessner, P.A. |
| 主权项 | 1. An apparatus, comprising: an integrated circuit (IC) and a resistor external to the IC, wherein the IC includes: a current output digital-to-analog converter (IDAC) circuit configured to provide an adjustable specified current to a resistor external to the apparatus;a voltage sensing circuit configured to sense the voltage of the external resistor; andan automatic gain control (AGC) circuit configured to receive threshold information using the adjustable specified current, wherein the IC is configured to receive a battery voltage, and wherein the AGC circuit is configured to modify gain applied to a signal input to the AGC circuit when the battery voltage satisfies a threshold voltage and to adjust the threshold voltage according to the specified current. | ||
| 地址 | San Jose CA US | ||