THS7353_15 Datasheet, PDF (43/57 Pages) Texas Instruments – 3-Channel Low Power Video Buffer with I2C Control, Selectable Filters, External Gain Control, 2:1 Input MUX, and Selectable Input Modes

THS7353
www.ti.com
SLOS484B – NOVEMBER 2005 – REVISED AUGUST 2012
Evaluation Module
To evaluate the THS7353, an evaluation module (EVM) is available. Because the THS7353 is controlled by the
I²C lines, additional control is required rather than simple switches. To keep the control as easy as possible, an
USB-to-I²C interface was designed onto the EVM. A computer running either Windows 2000 or XP is then
connected to the EVM through the USB cable. A computer program interface allows graphical control of the
THS7353 that allows both read and write functions to be performed. The EVM comes with a CD-ROM loaded
with all the required software to install the command software on to the computer.
To program the THS7353, the user selects the channel, the filter, and the mode of operation, and selects the
Execute button. The Req Done light on the computer screen is lit to confirm that the command was executed by
the THS7353. The same procedure is done for each and every channel. To read the THS7353 registers, change
the switch to Read, select the channel, and then select the Execute button. The resulting register content
appears in hexadecimal code.
Note that the USB-to-I²C interface circuitry must be powered by a 3.3-V supply only. Additionally, the I²C circuitry
section must be powered on either at the same time as the THS7353 or before power is applied to the THS7353.
This is due to the reading of the EEPROM the TAS1020 device must complete to program its core. The yellow
LED in the I²C section is lit if the TAS1020 was programmed properly. If this LED is not lit, then cyclng the power
should be done to reset the USB-to-I²C TAS1020 chip.
Table 4 is a bill of materials, the board layout is found in Figure 78 through Figure 81.
ITEM
DESCRIPTION
1 BEAD, FERRITE, 2.5A, 80 OHM
2
CAP, 22uF, TAN, 6.3V, 10%, LO
ESR
3
CAP, 100uF, TAN, 10V, 10%, LO
ESR
4 OPEN
5
CAP, 33pF, CERAMIC, 50V,
NPO
6
CAP, 47pF, CERAMIC, 50V,
NPO
7
CAP, 100pF, CERAMIC, 50V,
NPO
8
CAP, 1000pF, CERAMIC, 100V,
NPO
9
CAP, 0.01uF, CERAMIC, 100V,
X7R
10
CAP, 0.1uF, CERAMIC, 50V,
X7R
11 CAP, 1uF, CERAMIC, 16V, X7R
12 OPEN
13 RESISTOR, 0 OHM
14
RESISTOR, 2.74K OHM, 1/8W,
1%
15 OPEN
16 RESISTOR, 0 OHM
17 RESISTOR, 10 OHM, 1/8W, 1%
18
RESISTOR, 27.4 OHM, 1/8W,
1%
SMD
SIZE
0805
A
C
0805
0805
0805
0805
0805
0805
0805
0805
0603
0603
0603
0805
0805
0805
0805
Table 4. Bill Of Materials
REFERENCE
DESIGNATOR
FB1, FB2, FB3
C30
C5
C2, C3, C8, C11,
C12, C14, C17, C21,
C23, Z9, Z12, Z15
PCB
QUANTITY
3
1
1
MANUFACTURER'S
PART NUMBER⁽¹⁾
(TDK) MPZ2012S331A
(AVX)
TPSA226K006R0900
(AVX)
TPSC107K010R0100
12
C31, C32
2
(AVX) 08055A330JAT2A
DISTRIBUTOR'S
PART NUMBER
(DIGI-KEY) 445-1569-1-ND
(DIGI-KEY) 478-1754-1-ND
(DIGI-KEY) 478-1765-1-ND
(DIGI-KEY) 478-1310-1-ND
C27, C29
2
(AVX) 08055A470JAT2A (DIGI-KEY) 478-1312-1-ND
C34
1
(AVX) 08055A101JAT2A (DIGI-KEY) 478-1316-1-ND
C33
1
(AVX) 08051A102JAT2A (DIGI-KEY) 478-1290-1-ND
C19, C28
C4, C6, C13, C22,
C26, C43, C44, Z4
C18, C35, C36, C37,
C38, C39, C40, C41,
C42, Z5, Z6
R47, R48, R49, R51
R1, R2, R3, R4, R6,
R7, R19, R20, R23
R41, R61
R9, R13, R15, R16,
R21, R28, Z8, Z11,
Z14
Z1, Z2, Z3, Z7, Z10,
Z13
R39, R44, R45, R52
R30, R31
2
(AVX) 08051C103KAT2A (DIGI-KEY) 478-1358-1-ND
8
(AVX) 08055C104KAT2A (DIGI-KEY) 478-1395-1-ND
11
(TDK) C2012X7R1C105K (DIGI-KEY) 445-1358-1-ND
4
9
(ROHM) MCR03EZPJ000 (DIGI-KEY) RHM0.0GCT-ND
2
(ROHM)
MCR03EZPFX2741
(DIGI-KEY) RHM2.7KHCT-ND
9
6
(ROHM) MCR10EZHJ000 (DIGI-KEY) RHM0.0ACT-ND
4
(ROHM)
MCR10EZHF10R0
(DIGI-KEY) RHM10.0CCT-ND
2
(ROHM) MCR10EZHF27.4 (DIGI-KEY) RHM27.4CCT-ND
(1) Manufacturer's part numbers are used for test purposes only.
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