參數(shù)資料
型號(hào)： LTC2205IUK-14
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 14-Bit, 65Msps ADC
中文描述： 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48
封裝： 7 X 7 MM, PLASTIC, MO-220WKKD-2, QFN-48
文件頁數(shù)： 19/28頁
文件大小： 1563K
代理商： LTC2205IUK-14
LTC2205-14
19
220514fa
Figure 8. Transformer Driven Encode
ditional aperture jitter that will be RMS summed with the
inherent ADC aperture jitter.
In applications where jitter is critical (high input frequen-
cies), take the following into consideration:
1. Differential drive should be used.
2. Use as large an amplitude possible. If using trans-
former coupling, use a higher turns ratio to increase the
amplitude.
3. If the ADC is clocked with a fixed frequency sinusoidal
signal, filter the encode signal to reduce wideband
noise.
4. Balance the capacitance and series resistance at both
encode inputs such that any coupled noise will appear
at both inputs as common mode noise.
The encode inputs have a common mode range of 1.2V
to 3V. Each input may be driven from ground to V
DD
for
single-ended drive.
APPLICATIONS INFORMATION
V
DD
V
DD
LTC2205-14
220514 F08
V
DD
1.6V
1.6V
6k
6k
TO INTERNAL
ADC CLOCK
DRIVERS
ENC–
ENC
+
ETC1-1T
0.1
μ
F
33pF
ENCODE
INPUT
100
50
0.1
μ
F
50
PGA Pin
The PGA pin selects between two gain settings for the ADC
front-end. PGA = 0 selects an input range of 2.25V
P-P
;
PGA = 1 selects an input range of 1.5V
P-P
. The 2.25V input
range has the best SNR; however, the distortion will be
higher for input frequencies above 100MHz. For applica-
tions with high input frequencies, the low input range will
have improved distortion; however, the SNR will be worse
by up to approximately 2dB. See the Typical Performance
Characteristics section.
Driving the Encode Inputs
The noise performance of the LTC2205-14 can depend on
the encode signal quality as much as on the analog input.
The encode inputs are intended to be driven differentially,
primarily for noise immunity from common mode noise
sources. Each input is biased through a 6k resistor to a
1.6V bias. The bias resistors set the DC operating point
for transformer coupled drive circuits and can set the logic
threshold for single-ended drive circuits.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2205IUK-14#PBF 功能描述:IC ADC 14BIT 65MSPS 48-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
LTC2205IUK-14#TRPBF 功能描述:IC ADC 14-BIT 65MSPS 48-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
LTC2205IUK-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
LTC2205IUK-TR 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
LTC2205IUK-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps
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