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參數資料
| 型號： | 73S8010C-IM/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, QFN-32 |
| 文件頁數： | 2/27頁 |
| 文件大小： | 348K |
| 代理商： | 73S8010C-IM/F |
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73S8010C Data Sheet
DS_8010C_024
10
Rev. 1.5
3
Oscillator
The Teridian 73S8010C device has an on-chip oscillator that can generate the smart card clock using an
external crystal, connected between the XTALIN and XTALOUT pins, to set the oscillator frequency.
When the card clock signal is available from another source, it can be connected to the pin XTALIN, and
the pin XTALOUT should be left unconnected.
4
DC-DC Converter – Card Power Supply
An internal DC-DC converter provides the card power supply. This converter is able to provide either a
3 V or 5 V card voltage from the power supply applied on the VDD pin. The digital ISO-7816-3 sequencer
controls the converter. Bit 2 of the Control register selects the card voltage.
The circuit is an inductive step-up converter/regulator. The external components required are 2 filter
capacitors on the power-supply input VDD (100 nF + 10 F, next to the LIN pin), an inductor, and an output
filter capacitor on the card power supply VCC. The circuit performs regulation by activating the step-up
operation when VCC is below a set point of 5.0 or 3.0 volts minus a comparator hysteresis voltage and the
input supply VDD is less than the set point for VCC. When VDD is greater than the set point for VCC (VDD =
3.6 V, VCC = 3 V) the circuit operates as a linear regulator. Depending on the inductor values, the voltage
converter can provide current on VCC as high as 100 mA.
The circuit provides over-current protection and limits ICC to 150 mA. When an over-current condition is
sensed, the circuit initiates a deactivation sequence from the control logic and reports back to the host
controller a fault on the interrupt output
INT.
Choice of the Inductor
The nominal inductor value is 10
H, rated for 400 mA. The inductor is connected between pin LIN (pin 5
in the SO package, pin 2 in the QFN package) and the VDD voltage. The value of the inductor can be
optimized to meet a particular configuration (ICC_MAX). The inductor should be located on the PCB as
close as possible to the LIN pin of the IC.
Choice of the VCC Capacitor
Depending on the applications, the requirements in terms of both VCC minimum voltage and transient
currents that the interface must be able to provide to the card vary. Table 4 shows the recommended
capacitors for each VCC power supply configuration and applicable specification.
Table 4: Choice of Vcc Capacitor
Specification Requirement
Application
Specification
Min VCC Voltage
Allowed During
Transient Current
Max Transient
Current Charge
Capacitor Type
Capacitor Value
EMV 4.0
4.6V
30nA.s
X5R/X7R w/
ESR < 100 m
3.3
F
ISO-7816-3
4.5V
20nA.s
1
F
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 73S8010C-IMR/F | 功能描述:I2C 接口集成電路 Smart Card Interface ISO7816-3 & EVM4.0 RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| 73S8010C-IMR/F1 | 功能描述:I2C 接口集成電路 RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| 73S8010C-IMR/F2 | 功能描述:I2C 接口集成電路 RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| 73S8010R | 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Low Cost Smart Card Interface |
| 73S8010R-DB | 功能描述:界面開發工具 73S8010R Demo Brd RoHS:否 制造商:Bourns 產品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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