參數(shù)資料
型號(hào)： HD49335HF
廠商： Renesas Technology Corp.
英文描述： CDS/PGA AND 10-bit A/D TG Converter
中文描述： 的CDS / PGA和10位A / D轉(zhuǎn)換器熱
文件頁(yè)數(shù)： 18/30頁(yè)
文件大?。?/td> 323K
代理商： HD49335HF
HD49335F/HF
Rev.1.0, Feb.25.2004, page 18 of 29
Explanation of Serial Data of CDS Part
Serial data of CDS part are assigned to address H’F0 to H’F8. Functions are follows.
Address
STD1[7:0] (L)
PGA gain
STD2[15:8] (H)
1
1
1
1
0
0
0
0
D7
D6
D5
D4
D3
D2
D1
D0 D15 D14 D13
test_I1
PGA gain (D0 to D7 of address H’F0)
Details are referred to page 5 block diagram.
At CDS_in mode: –2.36 dB + 0.132 dB
×
N (Log linear)
At ADC_in mode: 0.57 times + 0.01784 times
×
N (Times linear)
: Full-scale digital output is defined as 0 dB when 1 V is input.
Above PGA gain definition means input signal 1 Vp-p to CDS_in, and set N = 18 (correspond 2.36 dB), and then
PGA outputs the 2 V full-range, and also ADC out puts the full code (1023).
This mean offset gain of PGA has 6 dB – 2.36 dB = 3.64 dB, therefore it should be decided that how much dB add
on.
(1) Level dia explain
CDS
PGA
0 dB when set N = 18 which correspond to 2.36 dB
ADC
(2) Level dia on the circuit
CDS
PGA
3.64 dB + 0.132 dB
×
N
(CDS = 0 dB)
ADC
2 V
1023
(1.0 V)
(1.0 V)
(2.0 V)
(1023)
Figure 9 Level Dia of PGA
Test_I1 (D13 to D15 of address H’F0)
It controls the standard current of analog amplifier systems of CDS, PGA. Use data = 4 (D15 = 1) normally.
When data = 0, 50% current value with default
When data = 4, default
When data = 7, 150% current value with default
Address
STD1[7:0] (L)
STD2[15:8] (H)
1
1
1
1
0
0
0
1
D4
D3
D2
D1
D0 D15 D14 D13 D12 D11 D10 D9
D8
SHA_fsel
test_I2
SHSW_fsel
t
M
L
S
S
SLP and STBY (D0, D1 of address H’F1)
SLP:
Stop the all circuit. Consumption current of CDS part is less than 10
μ
A.
Start up from offset calibration when recover is needed.
STBY: Only the standard voltage generating circuit is operated. Consumption current of CDS part is about 3 mA.
Allow 50 H time for feedback clamp is stabilized until recover.
相關(guān)PDF資料
PDF描述
HD49338F CDS/PGA & 12-bit A/D Converter
HD49338HF CDS/PGA & 12-bit A/D Converter
HD49351BP CDS/PGA & 10-bit A/D TG Converter
HD49351HBP CDS/PGA & 10-bit A/D TG Converter
HD49404 TV/Video Signal Processor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD49335HNP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CDS/PGA & 10-bit A/D TG Converter
HD49335NP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CDS/PGA & 10-bit A/D TG Converter
HD49338F 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CDS/PGA & 12-bit A/D Converter
HD49338HF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CDS/PGA & 12-bit A/D Converter
HD49338HNP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:CDS/PGA & 12-bit A/D Converter
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