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參數資料
| 型號： | TMC1175AN2B30 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數： | 4/19頁 |
| 文件大小： | 425K |
| 代理商： | TMC1175AN2B30 |
TMC1175A
PRODUCT SPECIFICATION
12
REV. 1.3.3 2/28/02
Typical Performance Characteristics
30
25
15
10
I DD
(mA)
5
0
010
20
30
40
20
60
50
30
20
SFDR
10
fs = 20 Msps
fs = 30 Msps
fs = 40 Msps
0
02
4
6
8
10
12
40
fs = 20 Msps
fs = 30 Msps
fs = 40 Msps
50
40
20
SNR
10
0
02
4
6
8
10
12
30
50
30
20
SNR
10
fs = 20 Msps
fs = 33 Msps
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
40
Figure 8. Typical IDD vs fS
Figure 9. Typical SFDR vs fIN and fS
Figure 10. Typical SNR vs fIN and fS
Figure 11. Typical SNR vs Full Scale Input Range
Applications Discussion
The circuit in Figure 12 employs a band-gap reference to
generate a variable RT reference voltages for the
TMC1175A as well as a bias voltage to offset the wideband
input amplier to mid-range. An "offset adjust"
is also shown for varying the mid-range voltage level.
The operational amplier in the reference circuitry is a
standard 741-type.
The voltage reference at RT can be adjusted from 0.0 to 2.4
volts while RB is grounded. Diodes are used to restrict the
wideband amplier output to between -0.7V and VDD
+0.7V. Diode protection is good practice to limit the analog
input voltage at VIN to the safe operating range.
The circuit in Figure 13 shows self-bias of RT and RB by
connection to VR+ and VR-. This sets up a 0.6 to 2.6 Volt
input range for VIN. The input range is susceptible to power
supply variation since the voltages on RT and RB are directly
derived from VDDA. The video input is AC-coupled and
biased at a adjustable midpoint of the A/D input range.
This circuit offers the advantage of minimum support
circuitry for the most cost-sensitive applications.
In Figure 14, an external band-gap reference sets RT to +1.2
Volts while RB is grounded. The internal pull-up resistor,
R+, provides the bias current for the band-gap reference. The
A/D converter input is biased to the mid-point of the input
range.
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| TMC1175AM7C50 | 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDSO24 |
| TMC1175AR3C50 | 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQCC28 |
| TMC1175B2F20 | 8-BIT CONVERTER SUBSYSTEM ADC, PARALLEL ACCESS, CDIP24 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TMC1175AN2C20 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Video A/D Conveter |
| TMC1175AN2C30 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Video A/D Conveter |
| TMC1175AN2C40 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TMC1175AN2C50 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TMC1175AR3B20 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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