參數(shù)資料
型號(hào)： TRF7960RHBT
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)： 4/52頁
文件大?。?/td> 1023K
代理商： TRF7960RHBT
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
www.ti.com
5.1.3
Supply Regulator Configuration
The supply regulators can be automatically or manually configured by the control bits. The available
options are shown in Table 5-1 through Table 5-4. Table 5-1 shows a 5-V system and the manual-mode
regulator settings. Table 5-2 shows manual mode for selection of a 3-V system. Table 5-3 and Table 5-4
show the automatic-mode gain settings for 5-V and 3-V systems.
The automatic mode is the default configuration. In automatic mode, the regulators are automatically set
every time the system is activated by asserting the EN input HIGH. The internal regulators are also
automatically reconfigured every time the automatic regulator selection bit is set HIGH (on the rising
edge).
The user can re-run the automatic mode setting from a state in which the automatic setting bit is already
high by changing the automatic setting bit from high to low to high. The regulator-configuration algorithm
adjusts the regulator outputs 250 mV below the VIN level, but not higher than 5 V for VDD_RF, 3.5 V for
VDD_A, and 3.4 V for VDD_X. This ensures the highest possible supply voltage for the RF output stage while
maintaining an adequate PSRR (power supply rejection ratio). As an example, the user can improve the
PSRR if there is a noisy supply voltage from VDD_X by increasing the target voltage difference across the
VDD_X regulator as shown for automatic regulator settings in Table 5-3 and Table 5-4.
Table 5-1. Supply-Regulator Setting – Manual – 5-V System
Byte
Option Bits Setting in Control Register
Action
Address
B7
B6
B5
B4
B3
B2
B1
B0
00
1
5-V system
0B
0
Manual regulator setting
0B
0
1
VDD_RF = 5 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
0
VDD_RF = 4.9 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
0
1
VDD_RF = 4.8 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
0
VDD_RF = 4.7 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
VDD_RF = 4.6 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
0
VDD_RF = 4.5 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
1
VDD_RF = 4.4 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
0B
0
VDD_RF = 4.3 V, VDD_A = 3.5 V, and VDD_X = 3.4 V
Table 5-2. Supply-Regulator Setting – Manual – 3-V System
Byte
Option Bits Setting in Control Register
Action
Address
B7
B6
B5
B4
B3
B2
B1
B0
00
0
3V system
0B
0
Manual regulator setting
0B
0
1
VDD_RF = 3.4 V, VDD_A, and VDD_X = 3.4 V
0B
0
1
0
VDD_RF = 3.3 V, VDD_A, and VDD_X = 3.3 V
0B
0
1
0
1
VDD_RF = 3.2 V, VDD_A, and VDD_X = 3.2 V
0B
0
1
0
VDD_RF = 3.1 V, VDD_A, and VDD_X = 3.1 V
0B
0
1
VDD_RF = 3.0 V, VDD_A, and VDD_X = 3.0 V
0B
0
1
0
VDD_RF = 2.9 V, VDD_A, and VDD_X = 2.9 V
0B
0
1
VDD_RF = 2.8 V, VDD_A, and VDD_X = 2.8 V
0B
0
VDD_RF = 2.7 V, VDD_A, and VDD_X = 2.7 V
12
System Description
Copyright 2006–2010, Texas Instruments Incorporated
Product Folder Link(s): TRF7960 TRF7961
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
TRF7961 制造商:TI 制造商全稱:Texas Instruments 功能描述:Multi-Standard Fully Integrated 13.56-MHz Radio Frequency Identification (RFID) Analog Front End and Data Framing Reader System
TRF7961RHBR 功能描述:RFID應(yīng)答器 Multi-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
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