參數(shù)資料
型號(hào)： TRF7960RHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 3/52頁
文件大?。?/td> 1023K
代理商： TRF7960RHBR
www.ti.com
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
5
System Description
5.1
Power Supplies
The positive supply pin, VIN (pin 2) has an input voltage range of 2.7 V to 5.5 V. The positive supply input
sources three internal regulators with output voltages VDD_RF, VDD_A and VDD_X that use external bypass
capacitors for supply noise filtering. These regulators provide enhanced PSRR for the RFID reader
system.
The regulators are not independent and have common control bits for output voltage setting. The
regulators can be configured to operate in either automatic or manual mode. The automatic regulator
mode setting ensures an optimal compromise between regulator PSRR and highest possible supply
voltage for RF output power. Whereas, the manual mode allows the user to manually configure the
regulator settings.
VDD_RF
The regulator VDD_RF (pin 3) is used to source the RF output stage. The voltage regulator can
be set for either 5-V or 3-V operation. When configured for the 5-V operation, the output
voltage can be set from 4.3 V to 5 V in 100-mV steps. The current sourcing capability for 5-V
operation is 150 mA maximum over the adjusted output voltage range.
When configured for 3-V operation, the output can be set from 2.7 V to 3.4 V, also in 100-mV
steps. The current sourcing capability for 3-V operation is 100 mA maximum over the adjusted
output voltage range.
VDD_A
Regulator VDD_A (pin 1) supplies voltage to analog circuits within the reader chip. The voltage
setting is divided in two ranges. When configured for 5-V operation, the output voltage is fixed
at 3.5 V.
When configured for 3-V operation, the output can be set from 2.7 V to 3.4 V in 100-mV steps.
Note that when configured, both VDD_A and VDD_X regulators are configured together
(their settings are not independent).
VDD_X
Regulator VDD_X (pin 32) can be used to source the digital I/O of the reader chip together with
other external system components. When configured for 5-V operation, the output voltage is
fixed at 3.4 V.
When configured for 3-V operation, the output voltage can be set from 2.7 to 3.4 V in 100-mV
steps. The total current sourcing capability of the VDD_X regulator is 20 mA maximum over the
adjusted output range. Note that when configured, both VDD_A and VDD_X regulators are
configured together (their settings are not independent).
VDD_PA
The VDD_PA pin (pin 4) is the positive supply pin for the RF output stage and is externally
connected to the regulator output VDD_RF (pin 3).
5.1.1
Negative Supply Connections
The negative supply connections are all externally connected together (to GND). The substrate connection
is VSS (pin 10), the analog negative supply is VSS_A (pin 15), the logic negative supply is VSS_D (pin 29),
the RF output stage negative supply is VSS_TX (pin 6), and the negative supply for the RF receiver input is
VSS_RX (pin 7).
5.1.2
Digital I/O Interface
To allow compatible I/O signal levels, the TRF7960/61 has a separate supply input VDD_I/O (pin 16), with
an input voltage range of 1.8 V to 5.5 V. This pin is used to supply the I/O interface pins (I/O_0 to I/O_7),
IRQ, SYS_CLK, and DATA_CLK pins of the reader. In typical applications, VDD_I/O is connected directly to
VDD_X to ensure that the I/O signal levels of the MCU are the same as the internal logic levels of the
reader.
Copyright 2006–2010, Texas Instruments Incorporated
System Description
11
Product Folder Link(s): TRF7960 TRF7961
相關(guān)PDF資料
PDF描述
TRF7960RHBT SPECIALTY CONSUMER CIRCUIT, PQCC32
TRF7961RHBR SPECIALTY CONSUMER CIRCUIT, PQCC32
TRF7961RHBT SPECIALTY CONSUMER CIRCUIT, PQCC32
TS(X)8387MFDSSC/SMD 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68
TS(X)8387MF_ 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TRF7960RHBRG4 功能描述:RFID應(yīng)答器 Multi-Std Fully Int 13.56MHz RFID AFE RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
TRF7960RHBT 功能描述:RFID應(yīng)答器 Mulit-Standard High Freq RFid Reader RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
TRF7960RHBT 制造商:Texas Instruments 功能描述:RFID Reader IC 制造商:Texas Instruments 功能描述:IC, RFID READER, 13.56MHZ, QFN-32
TRF7960RHBTG4 功能描述:RFID應(yīng)答器 Mulit-Standard High Freq RFID Read/Writ RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
TRF7960TB 功能描述:射頻識(shí)別變換器工具 TRF7960 Target Board RoHS:否 制造商:Olimex Ltd. 產(chǎn)品:RFID Readers 用于:ISO15693
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*