參數(shù)資料
型號(hào): TLV2544EVM
廠商: Texas Instruments, Inc.
英文描述: 12-BIT ADC EVALUATION MODULE(12位ADC評(píng)估板)
中文描述: 12位ADC評(píng)估板(12位ADC的評(píng)估板)
文件頁(yè)數(shù): 9/36頁(yè)
文件大?。?/td> 775K
代理商: TLV2544EVM
Power Requirements
1-3
Overview
1.3
Power Requirements
The EVM dc supply voltage range is
±
7 V to
±
10 V. The power supply and
externally-applied reference voltage should be supplied to the EVM through
shielded twisted-pair wire for best performance. This type of power cabling
minimizes any stray or transient pickup from the higher frequency digital
circuitry.
Voltage Limits
Exceeding the
±
10-volt maximum can damage EVM components.
Under voltage may cause improper operation of the bipolar op amp
channel A1, depending on the application. The positive supply can
be lowered to 6 volts and the EVM will maintain the 5-V supply.
1.4
I/O CLK or SCLK Requirements
The TLV1544 has a maximum I/O CLK of 10 MHz at V
CC
= 5 V and is limited
to 2.8 MHz for a supply voltage of 2.7 V. The TLV2544/48 has a maximum
SCLK of 20 MHz at V
CC
= 5 V and 15 MHz at 2.7 V. Table 1–1 lists the maximum
I/O CLK/SCLK frequencies for different supply ranges. This also depends on
input source impedance. For example, I/O CLK speed faster than 2.39 MHz
is achievable if the input source impedance is less than 1 k
.
Table 1–1.Maximum I/O CLK Frequency
V
CC
Maximum Input
Resistance (Max)
Source
Impedance
1 k
100
1 k
100
1 k
1 k
1 k
1 k
I/O CLK/SCLK
TLV1544
2 7 V
2.7 V
5 K
2.39 MHz
2.81 MHz
7.18 MHz
10 MHz
4 5 V
4.5 V
1 K
TLV2544
TLV2548
2.7 V
4.5 V
2.7 V
5.5 V
600
500
600
500
15 MHz
20 MHz
15 MHz
20 MHz
TLV1504
TLV1508
TLC1514
TLC1518
TLC2554
TLC2558
5.5 V
500
1 k
20 MHz
5.5 V
500
1 k
20 MHz
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