Limiter

8 Bit Register

Crosspoint

Pre-emphasis

Equalizer

Settings

Crosspoint Adjust

Crosspoint Adjust

Power-On

Reset

Band-Gap, Analog References,

Power Supply Monitor and

Temperature Sensor

2-Wire Interface and Control Logic

SDA

SCK

DIS

DIN+

DIN-

RZTC

RZTC

AMP

8 Bit Register

8 Bit Register

8 Bit Register

8 Bit Register

8 Bit Register

Crosspoint Settings

ADC Settings

10 Bit Register

8 Bit Register

ADC

Analog to

Digital

Conversion

DC Offset Cancellation

Adjustable

Boost

8 Bit Register

PSM

TS

SDA

SCK

DIS

VCC

10 kΩ

10 kΩ

10 kΩ

Limiter Current

8 Bit Register

OUT+

OUT-

Mod.

Current

Generator

Equalizer

Amplifier

100Ω

ABT Settings

VCC

Active Back

Termination

VCCD

To Digital Circuitry

BGV

BGV

AMP

ONET1151M

SLLSED8 – OCTOBER 2012

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

BLOCK DIAGRAM

Figure 1 shows a simplified block diagram of the ONET1151M. The modulator driver consists of an equalizer, a

limiter, an output driver, power-on reset circuitry, a 2-wire serial interface including a control logic block, a

modulation current generator, and an analog reference block.

Figure 1. Simplified Block Diagram of the ONET1151M

2

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Product Folder Links: ONET1151M