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参数资料
型号： SI3210-FT
厂商： Silicon Laboratories Inc
文件页数： 80/148页
文件大小： 0K
描述： IC SLIC/CODEC PROGRAMMBL 38TSSOP
标准包装： 50
系列： ProSLIC®
功能： 用户线路接口概念（SLIC），CODEC
接口： PCM，SPI
电路数： 1
电源电压： 3.3V，5V
电流 - 电源： 88mA
功率（瓦特）： 700mW
工作温度： 0°C ~ 70°C
安装类型： 表面贴装
封装/外壳： 38-TFSOP（0.173"，4.40mm 宽）
供应商设备封装： 38-TSSOP
包装： 管件
包括： BORSCHT 功能，DTMF 生成和解码，FSK 生成，脉冲测量生成，语音回送测试模式
其它名称： 336-1168
Si3210/Si3211
Rev. 1.61
37
Not
Recommended
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boost dc-dc converter that converts a positive dc
voltage into the desired negative battery voltage. In
addition to eliminating external power supplies, this
allows the Si3210 to dynamically control the battery
voltage to the minimum required for any given mode of
operation.
Two different dc-dc circuit options are offered: a BJT/
inductor version and a MOSFET/transformer version.
Due to the differences on the driving circuits, there are
two different versions of the Si3210. The Si3210
supports the BJT/inductor circuit option, and the
Si3210M version supports the MOSFET solution. The
only difference between the two versions is the polarity
of the DCFF pin with respect to the DCDRV pin. For the
Si3210, DCDRV and DCFF are of opposite polarity. For
the Si3210M, DCDRV and DCFF are the same polarity.
Table 27 summarizes these differences.
Extensive design guidance on each of these circuits can
be obtained from “AN45: Design Guide for the Si3210
DC-DC Converter” and from an interactive dc-dc
converter design spreadsheet. Both of these documents
are available on the Silicon Laboratories website
(www.silabs.com).
2.2.2. BJT/Inductor Circuit Option Using Si3210
The BJT/Inductor circuit option shown in Figure 10 on
page 18 offers a flexible, low-cost solution. Depending
on selected L1 inductance value and the switching
frequency, the input voltage (VDC) can range from 5 V to
30 V. Because of the nature of a dc-dc converter’s
operation, peak and average input currents can become
large with small input voltages. Consider this when
selecting the appropriate input voltage and power rating
for the VDC power supply.
For this solution, a PNP power BJT (Q7) switches the
current flow through low ESR inductor L1. The Si3210
uses the DCDRV and DCFF pins to switch Q7 on and
off. DCDRV controls Q7 through NPN BJT Q8. DCFF is
ac-coupled to Q7 through capacitor C10 to assist R16 in
turning off Q7. Therefore, DCFF must have opposite
polarity to DCDRV, and the Si3210 (not Si3210M) must
be used.
Table 27. Si3210 and Si3210M Differences
Device
DCFF Signal
Polarity
DCPOL
Si3210
= DCDRV
0
Si3210M
= DCDRV
1
Notes:
1. DCFF signal polarity with respect to DCDRV signal.
2. Direct Register 93, bit 5; This is a read-only bit.
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参数描述
SI3210-FTR 功能描述:电信线路管理 IC Single-CH SLIC/Codec dc-dc RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
SI3210-GT 功能描述:电信线路管理 IC Single-Channel SLIC Codec RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
SI3210-GTR 功能描述:电信线路管理 IC Single-CH SLIC/Codec dc-dc RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
SI3210-KT 功能描述:电信线路管理 IC Single Channel SLIC /CODEC w/DTMF RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
SI3210-KTR 功能描述:电信线路管理 IC Sgl Ch SLIC/Codec w/ DTMF Decoder RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
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