DS30BA101SQE/NOPB [TI]

3.125Gbps 差动缓冲器 | RUM | 16 | -40 to 85;


型号：	DS30BA101SQE/NOPB
厂家：	TEXAS INSTRUMENTS
描述：	3.125Gbps 差动缓冲器 \| RUM \| 16 \| -40 to 85
文件：	总9页 (文件大小：691K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

February 9, 2012

DS30BA101

3.125 Gbps Differential Buffer

General Description

The DS30BA101 is a high-speed differential buffer for cable

driving, signal buffering, and signal repeating applications. Its

fully differential signal path ensures exceptional signal integri-

ty and noise immunity. The DS30BA101 drives both differen-

tial and single-ended transmission lines at data rates up to

3.125 Gbps.

Data rates from DC to 3.125 Gbps

Applications

The output voltage amplitude is adjustable via a single exter-

nal resistor for cable driving applications into 75Ω single-

ended and 100Ω differential mode impedances.

The DS30BA101 is powered from a single 3.3V supply and

consumes 165 mW (typical). It operates over the full industrial

temperature range of -40°C to +85°C and is available in a

4 x 4 mm 16-pin LLP package.

Cable extension

■

Signal buffering and repeating

Security and surveillance

■

Typical Application

30152002

301520 SNLS403

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Connection Diagram

30152005

The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage.

16-Pin LLP

Order Number DS30BA101SQ

Package Number SQB16A

Ordering Information

Part Number

DS30BA101SQ

DS30BA101SQE

DS30BA101SQX

Package

Quantity

Reel of 1000

Reel of 250

Reel of 4500

16-Pin LLP, 4.0 x 4.0 x 0.8 mm, 0.65 mm pitch

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Pin Descriptions

Name

I/O, Type

I, CML

Description

IN+

IN-

Non-inverting input.

I, CML

Inverting input.

V_EE

R_VO

Ground

I, Analog

Negative power supply (ground).

Output voltage level control. Connect a resistor between this pin and V_CCto set the

output voltage.

V_CC

V_EE

N/A

No connect. Not bonded internally.

Power

N/A

Positive power supply (+3.3V).

No connect. Not bonded internally.

Positive power supply (+3.3V).

Negative power supply (ground).

Inverting output.

N/A

Power

Ground

O, Data

N/A

DAP

OUT-

OUT+

Non-inverting output.

No connect. Not bonded internally.

Connect exposed DAP to negative power supply (ground).

N/A

V_EE

Ground

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ESD Rating (HBM)

ESD Rating (MM)

ESD Rating (CDM)

≥±4.5 kV

≥±250V

≥±2 kV

Absolute Maximum Ratings (Note 1)

Supply Voltage:

3.6V

Input Voltage (all inputs)

−0.3V to V_CC+0.3V

28 mA

Output Current

Recommended Operating

Conditions

Storage Temperature Range

Junction Temperature

Package Thermal Resistance

ꢀθ_JA16-pin LLP

−65°C to +150°C

+125°C

Supply Voltage (V_CC):

3.3V ±5%

+58°C/W

+21°C/W

Operating Free Air Temperature (T_A)

-40°C to +85°C

ꢀθ_JC16-pin LLP

DC Electrical Characteristics

Over recommended supply voltage and operating temperature ranges, unless otherwise specified. (Note 2, Note 3)

Symbol

Parameter

Conditions

Reference

Min

Typ

Max

Units

V_ICM

Input Common Mode Voltage

IN+, IN-

V_CC–

1.1 +

V_ID/2

V_ID

Input Voltage Swing

Differential

mV_P−P

100

2200

V_OCM

Output Common Mode Voltage

OUT+, OUT-

V_CC–

V_OUT

Output Voltage

Supply Current

Single-ended, 75Ω load,

R_VO= 750Ω

mV_P-P

800

Single-ended, 50Ω load,

R_VO= 953Ω

mV_P-P

400

I_CC

AC Electrical Characteristics

Over recommended supply voltage and operating temperature ranges, unless otherwise specified. (Note 2, Note 3)

Symbol

DR_IN

t_TLH

Parameter

Input Data Rate

Conditions

Reference

IN+, IN-

Min

Typ

Max

3125

130

Units

Mbps

Transition Time Low to High

Transition Time High to Low

20% - 80% (Note 4)

OU++, OUT-

t_THL

130

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device my occur, including inoperability and degradation of device reliability

and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in

the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the

device should not be operated beyond such conditions.

Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified

or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed.

Note 3: Typical values represent most likely parametric norms at V_CC= +3.3V, T_A= +25°C, and at the Recommended Operating Conditions at the time of product

characterization and are not guaranteed.

Note 4: Specification is guaranteed by characterization and is not tested in production.

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Figure 1 and Figure 2 show the typical configurations for dif-

ferential output and single-ended output, respectively. For

single-ended output, the unused output must be properly ter-

minated as shown.

Device Operation

INPUT INTERFACING

The DS30BA101 accepts either differential or single-ended

input. DC-coupled inputs must be kept within the specified

common-mode range.

Application Information

CABLE EXTENDER APPLICATION

OUTPUT INTERFACING

The DS30BA101 together with the DS30EA101 form a cable

extender chipset optimized for extending serial data streams

from serializer/deseralizer (SerDes) pairs and FPGAs over

100Ω differential cables and 75Ω coaxial cables. Setting the

correct DS30BA101 output amplitude and proper cable ter-

mination are essential for optimal operation. Figure 1 shows

the recommended chipset configuration for 100Ω differential

cable and Figure 2 shows the recommended chipset config-

uration for 75Ω coaxial cable.

The DS30BA101 uses current mode outputs. Single-ended

output levels are 800 mV_P-Pinto 75Ω AC-coupled coaxial ca-

ble with an R_VOresistor of 750Ω, or 400 mV_P-P(800 mV_P-P

differential) into 100Ω differential cable with an R_VOresistor

of 953Ω. The output voltage level is controlled by the value of

the R_VOresistor connected between the R_VOpin and V_CC

The R_VOresistor should be placed as close as possible to the

R_VOpin. In addition, the copper in the plane layers below the

R_VOnetwork should be removed to minimize parasitic capac-

itance.

30152031

FIGURE 1. Cable Extender Chipset Application Circuit for 100Ω Differential Cable

30152032

FIGURE 2. Cable Extender Chipset Application Circuit for 75Ω Coaxial Cable

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Physical Dimensions inches (millimeters) unless otherwise noted

16-Pin LLP

Order Number DS30BA101SQ

Package Number SQB16A

www.ti.com

Notes

www.ti.com

Notes

www.ti.com

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TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard

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TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and

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DS30BA101SQE/NOPB [TI]

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