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參數(shù)資料
| 型號(hào)： | LTC2153CUJ-14#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT DUAL 310MSPS 40QFN |
| 標(biāo)準(zhǔn)包裝： | 61 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 310M |
| 數(shù)據(jù)接口： | 并聯(lián)，串行，SPI |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 479mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 40-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-QFN（6x6） |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個(gè)差分 |
| 配用： | DC1371A-ND - BOARD USB DATA ACQUISITION HS |
LTC2153-14
12
215314f
applicaTions inForMaTion
Figure 5. Recommended Front-End Circuit for
Input Frequencies from 150MHz to 900MHz
Figure 6. Front-End Circuit Using a High
Speed Differential Amplifier
Amplifier Circuits
Figure 6 shows the analog input being driven by a high
speed differential amplifier. The output of the amplifier is
AC coupled to the A/D so the amplifier’s output common
mode voltage can be optimally set to minimize distortion.
At very high frequencies an RF gain block will often have
lower distortion than a differential amplifier. If the gain
block is single-ended, then a transformer circuit (Figures
3 and 5) should convert the signal to differential before
driving the A/D. The A/D cannot be driven single-ended.
Reference
The LTC2153-14 has an internal 1.25V voltage reference.
For a 1.32V input range with internal reference, connect
SENSE to VDD. For a 1.32V input range with an external
reference, apply a 1.25V reference voltage to SENSE
(Figure 7).
Encode Input
The signal quality of the encode inputs strongly affects
the A/D noise performance. The encode inputs should
be treated as analog signals—do not route them next to
digital traces on the circuit board.
The encode inputs are internally biased to 1.2V through
10k equivalent resistance (Figure 8). If the common mode
of the driver is within 1.1V to 1.5V, it is possible to drive
the encode inputs directly. Otherwise a transformer or
4.7
50
0.1F
AIN+
AIN–
0.1F
3pF
VCM
LTC2153-14
215314 F06
INPUT
0.1F
45
10
100
4.7
0.1F
IN
0.1F
T1: MABA
007159-000000
215314 F05
LTC2153-14
AIN+
AIN–
VCM
Figure 7. Reference Circuit
Figure 8. Equivalent Encode Input Circuit
VDD
LTC2153-14
215314 F08
1.2V
10k
ENC+
ENC–
SCALER/
BUFFER
VREF
2.2F
SENSE
1.25V
LTC2153-14
215314 F07
5
ADC
REFERENCE
SENSE
DETECTOR
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2153IUJ-12#PBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT DUAL 310MSPS 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 12-bit, 310Msps, 1.8V ADC, DDR LVDS Outputs |
| LTC2153IUJ-12#TRPBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT DUAL 310MSPS 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 12-bit, 310Msps, 1.8V ADC, DDR LVDS Outputs |
| LTC2153IUJ-14#PBF | 功能描述:IC ADC 14BIT DUAL 310MSPS 40QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| LTC2153IUJ-14#TRPBF | 功能描述:IC ADC 14BIT DUAL 310MSPS 40QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| LTC2155-12 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 14-Bit 250Msps |
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