Datasheet > ACS104A

ACS104A

更新时间： 2024-10-31 22:38:59

品牌	Logo	应用领域
商升特 - SEMTECH		调制解调器光纤
页数	文件大小	规格书
12页	148K
描述
ACS104A Fiber Modem

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ACS104A 数据手册

_{Advanced Communications}ACS104A Fiber Modem

ACS104A Data Sheet

Features

Low cost, single-chip solution for data powered RS-232 modems

using twin fiber-optic cables. Includes all analog/digital functions

except for power extraction circuitry and RS-232 level shifting.

Suitable for plastic or glass fiber, RF, infra-red over free air or

other media.

Uses low cost LED and PIN combination to transmit and receive

data.

Additional operating mode to support PIN with integrated TIA.

Asynchronous data rates from DC to 162kbps.

Very low power consumption; typically 2 - 3mA, which could be

extracted from the RS232 port itself, for > 12 dB link budget.

Supports 3 additional low frequency asynchronous channels or

the RS-232 handshake signals.

Bit Error Rate (BER) < 10^-9

Available in 44 pin TQFP (part no: ACS104A-TQ) and 28 pin

PLCC (part no: ACS104A-PL) packages.

TRC

LED/PIN

combinations

Digital

Filter

Data

Compress

FIFO Time

Compress

3B4B

Encoder

TxD

RxD

LED

Driver

Receiver

Digital

Filter

Data

Decompress

FIFO Time

Decompress

3B4B

Decoder

RS-232 Interface

Control Logic

DCDB CTS DSR RIO RTS DTR RII

DR(2:1) DM(2:1)

HBT

PORB

Equivalent Block Diagram of ACS104A

Description

The ACS104A is a complete controller, driver and receiver IC, supporting full-

duplex asynchronous transmission from DC to 162kbps over a serial link.

Improved sensitivity and additional operating modes are offered over the

ACS104. Although primarily designed to be used with standard LED emitters and

PIN receivers and twin optical fibers, any other simple serial media may be used.

The ACS104A is optimised for very low power consumption, consuming only 2 -

3mA at RS-232 data rates including power provided to the LED and 'heartbeat'

monitor. In applications where the power is extracted from the RS232 data lines,

this leaves a generous amount of power left for any power extraction and RS-232

level shifting circuitry.

The ACS104A employs data compression and time compression techniques,

affording high launch power in short bursts, leading to a low average power

consumption. The advantage of this approach is that high link budgets can be

achieved with inexpensive optical components. For example, the recommended

set-up for RS-232 applications (19.2kbps + handshake signals) assumes that the

LED is driven with a peak current of approximately 15.4mA for 6 % of the time.

The machine cycle is short enough to facilitate power supply smoothing with a

small external capacitor in the region of 100µF.

12 3 4 5 6 7...12

中文翻译

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与ACS104A相关器件

型号	品牌	获取价格	描述	数据表
ACS104A-PL	SEMTECH	获取价格	ACS104A Fiber Modem
ACS104A-TQ	SEMTECH	获取价格	ACS104A Fiber Modem
ACS108	ETC	获取价格	AC LINE SWITCH
ACS108/5S	STMICROELECTRONICS	获取价格	AC LINE SWITCH
ACS108-5SA	STMICROELECTRONICS	获取价格	AC LINE SWITCH
ACS108-5SA-AP	ETC	获取价格	AC LINE SWITCH
ACS108-5SA-TR	STMICROELECTRONICS	获取价格	AC LINE SWITCH
ACS108-5SN	STMICROELECTRONICS	获取价格	AC LINE SWITCH
ACS108-5SN-TR	STMICROELECTRONICS	获取价格	暂无描述
ACS108-5SX	STMICROELECTRONICS	获取价格	AC LINE SWITCH

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