DC709A,DC709A pdf中文资料,DC709A引脚图,DC709A电路-Datasheet-电子工程世界

文档预览

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 709

LTC4557

DESCRIPTION

The LTC®4557 provides power conversion and signal

level translation needed for 2.5G and 3G cellular tele-

phones to interface with 1.8V or 3V subscriber iden-

tity modules (SIMs). The part meets all requirements

for 1.8V and 3V SIMs. The part contains LDO regula-

tors to power 1.8V or 3V SIM cards from a 2.7V to

5.5V input. The output voltages can be set using the

two voltage selection pins and up to 50mA of load

current can be supplied. Internal level translators al-

low controllers operating with supplies as low as 1.2V

to interface with 1.8V or 3V smart cards. Battery life

is maximized by a low operating current of less than

100µA and a shutdown current of less than 1µA.

Design files for this circuit board are available. Call

the LTC factory.

LTC is a trademark of Linear Technology Corporation

DUAL SIM/SMART CARD POWER SUPPLY AND INTERFACE

QUICK START PROCEDURE

The QuickEval

(ltcqev.exe) software can be run

from the supplied CD-ROM or by downloading it

from www.linear.com. Follow the DC590A Quick

Start Procedure for software installation instruc-

tions.

Plug the supplied USB cable into your computer

and then into the DC590A controller board.

Run the ltcqev.exe program and the window be-

low should appear.

Make certain that the three jumpers on the

DC709 are set to “INT.”

Attach the Ribbon cable from the DC590A to the

DC709. Pin 1 is identified on the ribbon cable by

a red mark. See photo below.

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 709

DUAL SIM/SMART CARD POWER SUPPLY AND INTERFACE

The QuickEval

software will detect the DC709

and load the LTC4557 program (shown on page

3).

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 709

DUAL SIM/SMART CARD POWER SUPPLY AND INTERFACE

RUNNING THE APPLICATION

The program consists of an enable button (ENA)

used to bring the part out of shutdown, mode con-

trol buttons to select the desired channel and volt-

age level, a reset button (RST), a button to apply

the selected settings and a button to request an An-

swer-To-Reset (ATR).

Card/Voltage

– These buttons are used to select the

desired card socket and voltage level. The follow-

ing table lists the

and

values and their re-

sulting card and voltage settings:

Apply Settings –

This button will set the inputs to

the LTC4557 to the values selected by the

M0, M1,

ENA

and

RST

pins. The values sent to the LTC4557

will not change until this button is pressed.

Get ATR –

Pressing this button will send a reset to

the selected card socket, and display the ATR in the

box representing the selected card. This button is

independent of the

RST

button and does not require

RST

to be set to “1.” A valid card must be inserted

into the card socket for an ATR to be displayed.

STANDALONE OPERATION

Selected

Card/Voltage

Card A/1.8V

Card A/3V

Card B/1.8V

Card B/3V

The DC709 may be used independently of the

DC590A This is particularly useful for evaluation of

the LTC4557’s electrical specifications and activa-

tion/deactivation sequences. The LTC4557 demo

program cannot be used without the DC590A in this

mode, however.

To use the DC709 as a standalone evaluation board,

set the three jumpers on the board to “EXT.” This

will enable the user to power the circuit via the

power supply terminals. Connect a power supply to

the

EXT VBATT, EXT DVCC

and

GND

terminals on

the board.

An external clock signal may be applied to the

EXT

CLK

terminal.

M1, M0, ENABLE

and

RSTIN

may be

set by supplying signals directly to the testpoints on

the board.

ENA

– This button brings the LTC4557 out of shut-

down mode. The selected card socket will be pow-

ered per the startup sequence when

ENA

is set to

“1” and the

Apply Settings

button is pressed.

RST

– Setting this button to “1” will send a reset

signal to the selected card socket when the

Apply

Settings

button is pressed.

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 709

DUAL SIM/SMART CARD POWER SUPPLY AND INTERFACE

参数对比

与DC709A相近的元器件有：LTC4557EUD#TR、LTC4557EUD、LTC4557EUD#PBF、LTC4557EUD#TRPBF。描述及对比如下：

型号	DC709A	LTC4557EUD#TR	LTC4557EUD	LTC4557EUD#PBF	LTC4557EUD#TRPBF
描述	board eval for ltc4557eud	IC dual sim/smart card PS 16qfn	IC dual sim/smart card PS 16qfn	IC dual sim/smart card PS 16qfn	IC DUAL SIM/SMART CARD PS 16QFN
Brand Name	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
是否Rohs认证	-	不符合	不符合	符合	符合
厂商名称	-	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )
零件包装代码	-	QFN	QFN	QFN	QFN
包装说明	-	HVQCCN,	HVQCCN,	HVQCCN,	HVQCCN,
针数	-	16	16	16	16
制造商包装代码	-	UD	UD	UD	UD
Reach Compliance Code	-	not_compliant	not_compliant	compliant	compliant
ECCN代码	-	EAR99	EAR99	EAR99	EAR99
可调阈值	-	NO	NO	NO	NO
模拟集成电路 - 其他类型	-	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码	-	S-PQCC-N16	S-PQCC-N16	S-PQCC-N16	S-PQCC-N16
JESD-609代码	-	e0	e0	e3	e3
长度	-	3 mm	3 mm	3 mm	3 mm
湿度敏感等级	-	1	1	1	1
信道数量	-	1	1	1	1
功能数量	-	1	1	1	1
端子数量	-	16	16	16	16
最高工作温度	-	70 °C	70 °C	70 °C	70 °C
封装主体材料	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	-	HVQCCN	HVQCCN	HVQCCN	HVQCCN
封装形状	-	SQUARE	SQUARE	SQUARE	SQUARE
封装形式	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）	-	235	235	260	250
认证状态	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	-	0.8 mm	0.8 mm	0.8 mm	0.8 mm
最大供电电压 (Vsup)	-	5.5 V	5.5 V	5.5 V	5.5 V
最小供电电压 (Vsup)	-	1.2 V	1.2 V	1.2 V	1.2 V
标称供电电压 (Vsup)	-	1.8 V	1.8 V	1.8 V	1.8 V
表面贴装	-	YES	YES	YES	YES
温度等级	-	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
端子面层	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Matte Tin (Sn)
端子形式	-	NO LEAD	NO LEAD	NO LEAD	NO LEAD
端子节距	-	0.5 mm	0.5 mm	0.5 mm	0.5 mm
端子位置	-	QUAD	QUAD	QUAD	QUAD
处于峰值回流温度下的最长时间	-	20	20	30	NOT SPECIFIED
宽度	-	3 mm	3 mm	3 mm	3 mm