參數(shù)資料
型號： TDA8757CHV/21
廠商： NXP SEMICONDUCTORS
元件分類： ADC
英文描述： 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144
封裝： 20 X 20 MM, 1.40 MM HEIGHT, PLASTIC, SOT-612-1, HLQFP-144
文件頁數(shù)： 22/38頁
文件大?。?/td> 894K
代理商： TDA8757CHV/21
Philips Semiconductors
TDA8757C
Triple 8-bit ADC 205 Msps
Preliminary data
Rev. 01 — 14 August 2002
29 of 38
9397 750 10111
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
[1]
From 25 to 70
°C, the edge of the clock CKDATA has a shift of 1 phase compared to CKREF.
[2]
Effective bits are obtained from a Fast Fourier Transform (FFT) treatment taking 8000 acquisition points per equivalent fundamental
period. The calculation takes into account all harmonics and noise up to half clock frequency (NYQUIST frequency).
Conversion-to-noise ratio: S/N = EB
× 6.02 + 1.76 dB.
[3]
Output data acquisition: the output data is available after the maximum sampling delay time td(s). All the timings are given for a 10 pF
capacitive load.
[4]
Pulse relative to the blank level.
[5]
The I2C-bus timings are given for use of the bus at a frequency of 100 kbit/s (100 kHz). This bus could be used at a frequency of
400 kbit/s (400 kHz).
[1]
PLL long-term time jitter is measured at the end of the video line, where it is at its maximum.
tf
SDA and SCL fall time
fSCL = 100 kHz
300
ns
tSU;STO
stop condition set-up time
4.0
s
Cb
bus line capacitive loading
400
pF
Table 17:
Characteristics…continued
VCCA = 4.75 V to 5.25 V (referenced to AGND); VCCD = 4.75 V to 5.25 V (referenced to DGND); VDDD = 4.75 V to 5.25 V
(referenced to VSSD); VCCO = 3.0 V to 3.6 V (referenced to OGND); AGND, DGND, OGND and VSS connected together;
Tamb = 0 to 70 °C; typical values measured at VCCA =VDDD =VCCD =5V; VCCO = 3.3 V and Tamb =25 °C; unless otherwise
specied.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 18:
Examples of PLL settings and performance
VCCA =VDDD =VCCD =5V; VCCO = 3.3 V; Tamb =25 °C.
Video standards
fref
(kHz)
fclk
(MHz)
N
KO
(MHz/V)
CZ
(nF)
CP
(nF)
IP
(
A)
Z
(k
)
Long-term time jitter[1]
RMS-value
(ps)
peak-to-peak
value (ps)
VESA: 640
× 480
(VGA 60 Hz)
31.469 25.175 800
20
68
0.15
700
1.6
tbf
VESA: 800
× 600
(SVGA 72 Hz)
48.08
50
1040
30
68
0.15
400
3.2
tbf
VESA: 1024
× 768
(XGA 75 Hz)
60.02
78.75
1312
60
68
0.15
700
1.6
tbf
VESA: 1280
× 1024
(SXGA 60 Hz)
63.98
108
1688
60
68
0.15
700
2.25 tbf
tbf
VESA: 1280
× 1024
(SXGA 75 Hz)
80.00
135
1688
115
68
0.15
400
2.25 tbf
tbf
VESA: 1600
× 1200
(UXGA 60 Hz)
75.00
162
2160
115
68
0.15
400
3.2
tbf
VESA: 1600
× 1200
(UXGA 75 Hz)
93.75
202.5
2160
115
68
0.15
700
2.25 tbf
tbf
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