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參數(shù)資料
| 型號(hào)： | SPT7852SIT |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | DUAL 10-BIT, 20 MSPS, 160 mW A/D CONVERTER |
| 中文描述： | 2-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁(yè)數(shù)： | 4/11頁(yè) |
| 文件大?。?/td> | 67K |
| 代理商： | SPT7852SIT |
4
1/12/00
SPT7852
1. Place the ferrite bead (*) as close to the ADC as possible.
2. Place 0.1
μ
F decoupling capacitors as close to the ADC as possible.
3. All capacitors are 0.1
μ
F surface-mount unless otherwise specified.
4. All analog input pins (references, analog input, clock input) must
be protected. (See absolute maximum ratings.)
11
V
RHF
V
RHS
V
IN1
V
IN2
Clock
Ref In
(+4 V)
V
RLS
V
RLF
V
CAL
V
INA
V
INB
CLK
.1
μ
F
.1
μ
F
4.7
μ
F
4.7
μ
F
+A5
Interfacing
Logic
11
3.3 V/5 V
FB
*
+A5
MSBINV
Reset
Digital
Output A
Digital
Output B
DAV
SPT7852
AV
DD
DV
DD
GND
OV
DD
+A5
EN
EN
3-st
FB
*
Figure 1 –Typical Interface Circuit
TYPICAL INTERFACE CIRCUIT
Very few external components are required to achieve the
stated device performance. Figure 1 shows the typical inter-
face requirements when using the SPT7852 in normal
circuit operation. The following sections provide descrip-
tions of the major functions and outline critical performance
criteria to consider for achieving the optimal device perfor-
mance.
POWER SUPPLIES AND GROUNDING
Fairchild suggests that both the digital and the analog sup-
ply voltages on the SPT7852 be derived from a single ana-
log supply as shown in figure 1. A separate digital supply
must be used for all interface circuitry. Fairchild suggests
using this power supply configuration to prevent a possible
latch-up condition on powerup.
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| SPT7855SCS | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 10BIT 40MSPS SaR aDC RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| SPT7855SCS_Q | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10BIT 40MSPS SaR aDC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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