R1, R2, R3 and R4 must be selected in relation to RIN to a" />
參數(shù)資料
型號： LTC2377IDE-18#TRPBF
廠商： Linear Technology
文件頁數(shù)： 4/24頁
文件大?。?/td> 0K
描述： IC ADC 18BIT 500KSPS 16-DFN
產(chǎn)品培訓(xùn)模塊： LTC2379- 18-/16-bit Fully-Differential SAR ADC Family Overview
標(biāo)準(zhǔn)包裝： 2,500
位數(shù)： 18
采樣率（每秒）： 500k
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 8mW
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： 16-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-DFN（4x3）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 1 個差分，雙極
配用： DC1783A-G-ND - BOARD SAR ADC LTC2377-18
DC1783A-C-ND - BOARD SAR ADC LTC2377-16
LTC2377-18
12
237718f
R1, R2, R3 and R4 must be selected in relation to RIN to
achieve the desired attenuation and to maintain a balanced
input impedance in the first amplifier. Table 1 shows the
resulting SNR and THD for several values of RIN, R1, R2,
R3 and R4 in this configuration. Figure 6b shows the re-
sulting FFT when using the LT6350 as shown in Figure 6a.
Table 1. SNR, THD vs RIN for ±10V Single-Ended Input Signal.
RIN
(Ω)
R1
(Ω)
R2
(Ω)
R3
(Ω)
R4
(Ω)
SNR
(dB)
THD
(dB)
2k
499
2k
402
100.9
–100
10k
2.49k
10k
2k
100.8
–92
100k
24.9k
100k
20k
100.7
–98
Fully Differential Inputs
To achieve the full distortion performance of the
LTC2377-18, a low distortion fully differential signal source
driven through the LT6203 configured as two unity gain
buffers as shown in Figure 7 can be used to get the full
data sheet THD specification of –124dB.
APPLICATIONS INFORMATION
LT6350
R1 = 499Ω
R2 = 499Ω
R3 = 2k
R4 = 402Ω
VCM = VREF/2
VCM
237718 F06a
OUT1
RINT
RIN = 2k
OUT2
8
4
5
2
1
+
–
+
–
+
220pF
10μF
200pF
0V
5V
–10V
10V
0V
5V
Digital Gain Compression
The LTC2377-18 offers a digital gain compression (DGC)
feature which defines the full-scale input swing to be be-
tween 10% and 90% of the ±VREF analog input range. To
enable digital gain compression, bring the REF/DGC pin
low. This feature allows the LT6350 to be powered off of
a single +5.5V supply since each input swings between
0.5V and 4.5V as shown in Figure 8. Needing only one
Figure 6a. LT6350 Converting a ±10V Single-Ended Signal to
a ±5V Differential Input Signal
Figure 6b. 32k Point FFT Plot with fIN = 2kHz
for Circuit Shown in Figure 6a
Figure 7. LT6203 Buffering a Fully Differential Signal Source
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237718 F06b
SNR = 100.9dB
THD = –100.3dB
SINAD = 98.1dB
SFDR = 102.3dB
FREQUENCY (kHz)
0
50
100
150
250
200
LT6203
237718 F07
0V
5V
0V
5V
3
1
2
+
–
0V
5V
5
7
6
+
–
0V
5V
LT6350
VCM = VREF/2
237718 F05a
0V
5V
0V
5V
OUT1
RINT
OUT2
8
4
5
2
1
+
–
+
–
+
0V
5V
FREQUENCY (kHz)
0
50
100
250
200
150
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237718 F05b
SNR = 101.2dB
THD = –108.2dB
SINAD = 100.6dB
SFDR = 108.5dB
Figure 5a. LT6350 Converting a 0V-5V Single-Ended
Signal to a ±5V Differential Input Signal
Figure 5b. 32k Point FFT Plot with fIN = 2kHz
for Circuit Shown in Figure 5a
相關(guān)PDF資料
PDF描述
IDT7204L50SO IC FIFO 4KX9 50NS 28SOIC
ADM237LJN IC TXRX RS-232 5:3 5V LP 24DIP
MS3102E28-10P CONN RCPT 7POS BOX MNT W/PINS
VI-BTM-MY CONVERTER MOD DC/DC 10V 50W
VE-23D-IX-B1 CONVERTER MOD DC/DC 85V 75W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2377IDE-20#PBF 制造商:Linear Technology 功能描述:IC ADC 20BIT 500KSPS 16DFN
LTC2377IDE-20#PBF 制造商:Linear Technology 功能描述:ADC 20BIT 500KSPS SPI DFN- 制造商:Linear Technology 功能描述:ADC 20BIT 500KSPS SPI DFN-16 制造商:Linear Technology 功能描述:ADC, 20BIT, 500KSPS, SPI, DFN-16
LTC2377IDE-20#TRPBF 制造商:Linear Technology 功能描述:IC ADC 20BIT 500KSPS 16DFN
LTC2377IMS-16#PBF 功能描述:IC ADC 16BIT SPI 500KSPS 16MSOP 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 個單端，雙極
LTC2377IMS-16#TRPBF 功能描述:IC ADC 16BIT SPI 500KSPS 16MSOP 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 個單端，雙極
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*