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| 型号： | 73M1903C-IM/F |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/48页 |
| 文件大小： | 0K |
| 描述： | IC MODEM AFE MULTIREGIONAL 32QFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 490 |
| 通道数： | 2 |
| 电压 - 电源，模拟： | 3 V ~ 3.6 V |
| 电压 - 电源，数字： | 3 V ~ 3.6 V |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 管件 |
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73M1903C Data Sheet
DS_1903C_033
22
Rev. 5.0
6.2
Analog I/O
Figure 7 shows the block diagram of the analog front end. The analog interface circuit uses differential
transmit and receive signals to and from the external circuitry.
The hybrid driver in the 73M1903C is capable of connecting directly, but not limited to, a transformer-
based Direct Access Arrangement (DAA). The hybrid driver is capable of driving the DAA’s line coupling
transformer and load impedance. The hybrid drivers can also drive high impedance loads without
modification.
An on-chip band gap voltage is used to provide an internal voltage reference and bias currents for the
analog receive and transmit channels. The reference derived from the bandgap, nominally 1.25 V, is
multiplied to 1.36 Volts and output at the VREF pin. Several voltage references, nominally 1.25 V, are
used in the analog circuits. The band gap and reference circuits are disabled after a chip reset since the
ENFE (Register00 bit7) is reset to a default state of zero. When ENFE=0, the band gap voltage and the
analog bias currents are disabled. In this case all of the analog circuits are powered down and draw less
than 5 μA of current.
A clock generator (CKGN) is used to create all of the non-overlapping phase clocks needed for the time
sampled switched-capacitor circuits, ASDM, DAC1, and TLPF. The CKGN input is 2 times the
analog/digital interface sample rate or 3.072 MHz clock for Fs=8 kHz.
AMUX1
Out
SE
L
MUX
ASDM
RXAP
AAF
Analog
Sigma-Delta
Modulator
TXAP1
TXAN2
Hybrid Drivers
TLPF
Transmit
Low Pass
Filter
Anti-Alias Filter
DAC
1
Outp
Outn
In
DAC
SFR
REGISTERS
d
tm
fb
s
t
ANALOG
DDEC
Serial
Port
1
15:0
DSDM
1
DIGITAL
gai
n
BGAP
CKGN
PLL/
CLKDIV
sck (3.072 MHz)
phase clocks (1.536 MHz)
phase clocks
(1.536 MHz)
Digital
Sigma-Delta
Modulator
Decimating
Filter
Clocks
rbi
t
tbit
Clock Generator
Bandgap
anal
b
analb
VBG
SMFLT
E
x
t
Loopbk
Int
Loopbk
rbs
tbs
OPSR
RXAN
MUX
D
igLoopbk
v
re
frx
txb
st
v
re
ftx
TXAP2
TXAN1
+
-
Figure 7: Analog Block Diagram
相关PDF资料 |
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| VI-23N-IW | CONVERTER MOD DC/DC 18.5V 100W |
| VI-23N-CV-B1 | CONVERTER MOD DC/DC 18.5V 150W |
| 73M1903-IVT/F | IC MODEM AFE V.22BIS 20-TSSOP |
| VI-23M-IW | CONVERTER MOD DC/DC 10V 100W |
| MAX5863ETM+ | IC AFE 8/10BIT 7.5MSPS 48-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 73M1903C-IMR/F | 功能描述:电信线路管理 IC Modem Analog Front End 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 |
| 73M1903C-IMR/F1 | 功能描述:电信线路管理 IC 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 |
| 73M1903-EVM-600 | 功能描述:网络开发工具 73M1903 w/Ppu & 600 Ohm Term-Usa & Japan RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| 73M1903-EVM-ETSI | 功能描述:网络开发工具 73M1903 w/Etsi 203 Complex Imped. Term RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| 73M1903-EVM-WW | 功能描述:BOARD DEMO 73M1903 PPU WORLDWIDE RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
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