參數(shù)資料
型號(hào)： LTC2230IUP
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： Electrical Specifications Subject to Change
中文描述： 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC64
封裝： 9 X 9 MM, PLASTIC, MO-220-WNJR, QFN-64
文件頁數(shù)： 19/28頁
文件大?。?/td> 695K
代理商： LTC2230IUP
LTC2230/LTC2231
19
22301p
The A
IN+
and A
IN–
inputs each have two pins to reduce
package inductance. The two A
IN+
and the two A
IN–
pins
should be shorted together.
For input frequencies above 100MHz the input circuits of
Figure 6, 7 and 8 are recommended. The balun trans-
former gives better high frequency response than a flux
coupled center tapped transformer. The coupling capaci-
tors allow the analog inputs to be DC biased at 1.6V. In
Figure 8 the series inductors are impedance matching
elements that maximize the ADC bandwidth.
Reference Operation
Figure 9 shows the LTC2230/LTC2231 reference circuitry
consisting of a 1.6V bandgap reference, a difference
amplifier and switching and control circuit. The internal
voltage reference can be configured for two pin selectable
input ranges of 2V (
±
1V differential) or 1V (
±
0.5V differ-
ential). Tying the SENSE pin to V
DD
selects the 2V range;
typing the SENSE pin to V
CM
selects the 1V range.
The 1.6V bandgap reference serves two functions: its
output provides a DC bias point for setting the common
mode voltage of any external input circuitry; additionally,
the reference is used with a difference amplifier to gener-
ate the differential reference levels needed by the internal
ADC circuitry. An external bypass capacitor is required for
the 1.6V reference output, V
CM
. This provides a high
frequency low impedance path to ground for internal and
external circuitry.
The difference amplifier generates the high and low refer-
ence for the ADC. High speed switching circuits are
connected to these outputs and they must be externally
bypassed. Each output has four pins: two each of REFHA
and REFHB for the high reference and two each of REFLA
and REFLB for the low reference. The multiple output pins
are needed to reduce package inductance. Bypass capaci-
tors must be connected as shown in Figure 9.
APPLICATIOU
W
U
U
25
25
12
12
0.1
μ
F
A
IN+
A
IN+
A
IN–
A
IN–
8pF
2.2
μ
F
V
CM
LTC2230/
LTC2231
ANALOG
INPUT
0.1
μ
F
0.1
μ
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
22301 F06
25
25
0.1
μ
F
A
IN+
A
IN+
A
IN–
A
IN–
2.2
μ
F
V
CM
LTC2230/
LTC2231
ANALOG
INPUT
0.1
μ
F
0.1
μ
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
22301 F07
25
25
0.1
μ
F
A
IN+
A
IN+
A
IN–
A
IN–
2pF
2.2
μ
F
V
CM
LTC2230/
LTC2231
ANALOG
INPUT
0.1
μ
F
0.1
μ
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
22301 F08
4.7nH
4.7nH
Figure 6. Recommended Front End Circuit for Input
Frequencies Between 100MHz and 250MHz
Figure 7. Recommended Front End Circuit for Input
Frequencies Between 250MHz and 500MHz
Figure 8. Recommended Front End Circuit for Input
Frequencies Above 500MHz
V
CM
REFHA
REFLB
SENSE
TIE TO V
DD
FOR 2V RANGE;
TIE TO V
FOR 1V RANGE;
RANGE = 2 V
SENSE
FOR
0.5V < V
SENSE
< 1V
1.6V
REFLA
REFHB
2.2
μ
F
2.2
μ
F
INTERNAL ADC
HIGH REFERENCE
BUFFER
0.1
μ
F
22301 F09
LTC2230/LTC2231
4
DIFF AMP
1
μ
F
1
μ
F
0.1
μ
F
INTERNAL ADC
LOW REFERENCE
1.6V BANDGAP
REFERENCE
1V
0.5V
RANGE
DETECT
AND
CONTROL
Figure 9. Equivalent Reference Circuit
相關(guān)PDF資料
PDF描述
LTC2230 16-Bit Universal Bus Driver With 3-State Outputs 48-TVSOP -40 to 85
LTC2231 16-Bit Universal Bus Driver With 3-State Outputs 48-SSOP -40 to 85
LTC2230CUP Electrical Specifications Subject to Change
LTC2231IUP Electrical Specifications Subject to Change
LTC2232 16-Bit Universal Bus Driver With 3-State Outputs 48-TSSOP -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2230IUP#PBF 功能描述:IC ADC 10BIT 170MSPS 64-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
LTC2230IUP#TRPBF 功能描述:IC ADC 10BIT 170MSPS 64-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
LTC2230UP 制造商:LINER 制造商全稱:Linear Technology 功能描述:10-Bit,170Msps/135Msps ADCs
LTC2231 制造商:LINER 制造商全稱:Linear Technology 功能描述:10-Bit,170Msps/135Msps ADCs
LTC2231CUP 制造商:LINER 制造商全稱:Linear Technology 功能描述:10-Bit,170Msps/135Msps ADCs
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(hào)，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(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*