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參數(shù)資料
| 型號： | 935261329557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | ADC |
| 英文描述： | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP32 |
| 封裝： | PLASTIC, SOT-401-1, LQFP-32 |
| 文件頁數(shù)： | 22/22頁 |
| 文件大小： | 147K |
| 代理商： | 935261329557 |
1999 Oct 06
9
Philips Semiconductors
Preliminary specication
8-bit, low-power, 3 V, 100 Msps
Analog-to-Digital Converter (ADC)
TDA8793
Notes
1. It is possible to use the reference output voltage (pin SDN) to drive other analog circuits under the limits indicated.
2. In addition to a good layout of the digital and analog grounds, it is recommended that the rise and fall times of the
clock must be not less than 0.75 ns.
3. It is possible with an external reference voltage connected to REFIN pin to adjust the ADC input range. The input
range variation will be fixed.
4. Effective bits are obtained via a Fast Fourier Transform (FFT) treatment taking 8 k acquisition points per equivalent
fundamental period. The calculation takes into account all harmonics and noise up to half of the clock frequency
(nyquist frequency). Conversion to signal-to-noise ratio: SINAD = 6.02
× EB + 1.76 dB.
Table 1
Standby selection
Table 2
Track-and-hold selection
Table 3
Output coding and input voltage (typical values; referenced to AGND); VREFIN = 1.27 V
PIN STDBY
D0 TO D7
ICCA +ICCD
LOW
inactive
56 mA
HIGH
active; output logic state LOW
0.7 mA
PIN TEN
TRACK-AND-HOLD
LOW
active
HIGH
inactive; tracking mode
STEP
VINP (V)
VINN (V)
BINARY OUTPUT BITS
D7
D6
D5
D4
D3
D2
D1
D0
Underow
<1.6
>2.1
0
0000000
0
1.6
2.1
00000000
1
...
00000001
...
127
1.85
...
254
...
11111110
255
2.1
1.6
11111111
Overow
>2.1
<1.6
1
1111111
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