ZL40539LCF datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Analog mixed-signal IC> Drivers and interfaces> ZL40539LCF

ZL40539LCF: DescriptionSPECIALTY INTERFACE CIRCUIT, QCC32; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size526KB，26 Pages; ManufacturerZarlink Semiconductor (Microsemi); Websitehttp://www.zarlink.com/

Download Datasheet Parametric Compare View All

ZL40539LCF Overview

SPECIALTY INTERFACE CIRCUIT, QCC32

ZL40539LCF Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Zarlink Semiconductor (Microsemi)
package instruction	HVQCCN, LCC32,.2SQ,20
Reach Compliance Code	compli
Interface integrated circuit type	INTERFACE CIRCUIT
JESD-30 code	R-XQCC-N32
JESD-609 code	e0
length	6 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	32
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC32,.2SQ,20
Package shape	RECTANGULAR
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	240
power supply	5 V
Certification status	Not Qualified
Maximum seat height	1 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	5 mm

Preview

Download Datasheet

View All

ZL40539

Dual Output CD and DVD

4 Channel Laser Diode Driver

Data Sheet

Features

•

Pin compatible with EL6839

Dual output for CD/DVD laser

LVDS control signal, internal 100 ohms

Rise time 1.0 ns, Fall time 1.1 ns typical

Low noise read channel with gain of 100x to

150 mA

Channel 2 gain of 250x to 550 mA

Channel 3 gain of 150x to 500 mA

Channel 4 gain of 100x to 450 mA

Combined total output current 700 mA

On-chip oscillator with frequency and amplitude

control by external resistors

Oscillator frequency to 575 MHz, amplitude to

100 mA pk to pk

Power Up/Down control

> 2 kV ESD Single 5 V supply (±10%)

EN4

P/N ENRB

EN2

P/N

February 2005

Ordering Information

ZL40539LCG Trays/Bake/Dry Pack

ZL40539LCF Tape/Reel Bake/Dry Pack

0°C to +70°C

•

32-pin QFN package

Applications

•

EN3

P/N

DVD±RW/RAM

DVD±R

CD-RW

CD-R

Write optical drives

Laser Diode current switch

Supports double density DVD

Enable

INR

Chip Enable/Power

VCC_A

IN2

OUTA

GND

IN3

OUTB

IN4

VCC_B

RFA

RFB

RSA

RSB

OSCEN

SELA

Figure 1 - ZL40539 Block Diagram

Zarlink Semiconductor Inc.

Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

ZL40539

Application Notes

Read and Write Channel Operation

Data Sheet

The device is activated by applying a 'High' signal to the Enable pin. In this mode, the read channel can be enabled

with a low signal on ENRB. The fast write channels can be enabled by applying a 'High' signal to the respective pair

of write enable pins (EN2P, EN2N), (EN3P, EN3N), or (EN4P, EN4N). The output currents of the four channels are

summed together and output as a composite signal at either OUTA (if SELA select is 'High') or OUTB (if SELA

select is 'Low'). This provides the ability to drive two different laser diodes with just one ZL40539.

Voltage control of the channel reference inputs (INR, IN2, IN3 and IN4) can be achieved quite easily using an

external resistor R

ref

in series with the reference channel input to convert a given reference potential V

ref

to an input

current, I

ref

where R

is the input impedance of the respective reference channel.

On-chip RF Oscillator

An on-chip RF oscillator is enabled if OSCEN = 'High', and its output signal is added to the appropriate current

output (OUTA, if SELA select is 'High', or OUTB, if SELA select is 'Low'). The oscillator amplitude is set by an

external resistor from RSA or RSB to GND. Its frequency is set by an external resistor RFA or RFB to GND. RSA

and RFA are selected when SELA is ‘High’

The oscillator signal is summed with the programmed Write and Read levels before amplification to the output. The

oscillator signal has zero DC level and +I_pk to –I_pk signal swing. Consequently, if the programmed DC level from

the Write and Read Channels is less than the PK level programmed for the Oscillator, the combined signal will be

clipped on the negative cycle of the signal. This will increase the harmonic content of the output signal and reduce

the pk to pk amplitude output.

Thermal Considerations

Package thermal resistance is 40°C/W under the EIA/JESD51-3 compliant PCB test board condition.

Users should ensure that the junction temperature does not exceed 150°C. Thermal resistance from junction to

case and to ambient is very much dependent on how the IC is mounted onto the board, on the PCB layout and on

any heat extraction arrangements.

Power consumption and system ambient operating temperature limits should be noted and careful thermal gradient

calculations undertaken to ensure that the junction temperature never exceeds 150°C.

Zarlink Semiconductor Inc.

ZL40539

Electrical and Optical Pulse Response

Data Sheet

ZL40539 Model

Figure 3 - Pulse Response Model

Figure 3 illustrates a simplified model of the ZL40539 output and the application. The ZL40539 consists of an ideal

switched current source and an equivalent model of the ZL40539 output stage. The Electrical Model for the Laser

Diode is a Voltage source Vd (V_on) in series with the On Resistance Rd all in parallel with the Junction

Capacitance Cd. This simplified model approximately represents the Laser Diode Electrical load when operated

beyond the Laser Threshold. To a first approximation, the Optical output is proportional to the current flow in the

Resistor Rd.

The Laser Diode and the ZL40539 are connected together buy interconnect tracks with the return current passing

through the supply decoupling bypass capacitor between ground and output Vcc.

The ZL40539 will typically switch the programmed output current in 400 ps and can be approximated to an ideal

switch with a propagation delay of Iout_on (1.2 nS). The electrical pulse response parameters, Trise, Tfall,

Overshoot and Undershoot are determined by the combined electrical network as illustrated in Figure 3.

For example, the Rise Time and Fall time for large current steps can be slew rate limited by the combined

interconnect and fixed interconnect inductance. The Fixed Inductance represents that associated with packaging

and minimum interconnect distance. The Interconnect Inductance is that associated with the additional tracking

between Laser Diode and the ZL40539 to accommodate application physical limitations. For example:-

if a pulse of 360 mA amplitude (40 mA to 400 mA) is to be switched in a time of 1 nS with the Vd =

1.6 V, then:-

the maximum volt drop across the interconnect inductance is approximately 3.5 V (maximum Vpin

for 500 mA output) – 1.6 V (Vdiode) = 1.9 V.

Consequently, L*di/dt < 1.9 V.

Hence, L < 1.9/ (0.36A/1nS) = 5.3 nH.

Small current step size Rise and Fall time will be determined by the Bandwidth of the combined network. This is

dominated by the Interconnect Inductance and the output Capacitance. Similarly, the overshoot and undershoot will

be determined by the Q of the network. This is a function of the Source Impedance from the ZL40539, the

Interconnect inductance and the Load impedance of the Laser Diode. Figure 3 includes example simplified

estimates of the Q and BW of the combined Laser Diode, ZL40539 and interconnect network for two different

interconnect inductance values (5 nH & 7 nH) and two different Diode On resistance (3 Ohm & 7 Ohm). This simple

analysis illustrates the change in BW and Q of the network depending on these parameters. This in turn effects the

Rise Time and Fall time and the Overshoot and Undershoot performance achieved in the application.

Zarlink Semiconductor Inc.

ZL40539LCF Related Products

	ZL40539LCF	ZL40539	ZL40539LCG
Description	SPECIALTY INTERFACE CIRCUIT, QCC32	SPECIALTY INTERFACE CIRCUIT, QCC32	SPECIALTY INTERFACE CIRCUIT, QCC32
Number of functions	1	1	1
Number of terminals	32	32	32
Maximum operating temperature	70 °C	70 Cel	70 °C
surface mount	YES	Yes	YES
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	NO LEAD	NO LEAD	NO LEAD
Terminal location	QUAD	QUAD	QUAD
Is it Rohs certified?	incompatible	-	incompatible
Maker	Zarlink Semiconductor (Microsemi)	-	Zarlink Semiconductor (Microsemi)
package instruction	HVQCCN, LCC32,.2SQ,20	-	HVQCCN, LCC32,.2SQ,20
Reach Compliance Code	compli	-	compli
Interface integrated circuit type	INTERFACE CIRCUIT	-	INTERFACE CIRCUIT
JESD-30 code	R-XQCC-N32	-	R-XQCC-N32
JESD-609 code	e0	-	e0
length	6 mm	-	6 mm
Humidity sensitivity level	1	-	1
Package body material	UNSPECIFIED	-	UNSPECIFIED
encapsulated code	HVQCCN	-	HVQCCN
Encapsulate equivalent code	LCC32,.2SQ,20	-	LCC32,.2SQ,20
Package shape	RECTANGULAR	-	RECTANGULAR
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	240	-	240
power supply	5 V	-	5 V
Certification status	Not Qualified	-	Not Qualified
Maximum seat height	1 mm	-	1 mm
Maximum supply voltage	5.5 V	-	5.5 V
Minimum supply voltage	4.5 V	-	4.5 V
Nominal supply voltage	5 V	-	5 V
Terminal surface	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)
Terminal pitch	0.5 mm	-	0.5 mm
Maximum time at peak reflow temperature	30	-	30
width	5 mm	-	5 mm

Recommended Resources

Delay lamp circuit using bidirectional thyristor (1)

Electromechanical control circuit for two-speed motor

Voltage regulator circuit using PNP transistor amplification

Positive polarity DC, DC converter circuit diagram

Dual 1mA precision current source circuit diagram

0~20V adjustable regulated power supply composed of μA723

How to use QMessageBox in Qt?: For example, in vc, I want to pop up a window with the content of test. My approach is messagebox("test"), but what about in Qt?...; 双对论 Embedded System

C implementation of incremental pid algorithm in msp430 microcontroller: C implementation method of incremental pid algorithm in msp430 microcontroller...; Aguilera Microcontroller MCU

Ask about Windows Driver: Drivers for WINDOWS series! How to develop, what tools to use, etc......; mimi Embedded System

【CN0011】Using the AD5382 DAC to achieve 32-channel programmable voltage and temperature drift performance: Circuit Function and AdvantagesThis circuit is a multichannel DAC configuration with excellent temperature drift performance. It provides 32 independent voltage channels with 14-bit resolution and a t...; EEWORLD社区 ADI Reference Circuit

Can this board be repaired?: [i=s] This post was last edited by jameswangsynnex on 2015-3-3 20:01 [/i] Can this board be repaired? [[i] This post was last edited by Simon on 2011-3-10 23:25 [/i]]...; 西门 Mobile and portable

CCS cannot download the program. The MCU is the white development board of F5529.: Could you please tell me why? [[i] This post was last edited by jimmy0087 on 2013-11-2 21:20[/i]]...; jimmy0087 Microcontroller MCU

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components