- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10304 > LTC2238CUH#PBF (Linear Technology)IC ADC 10-BIT 65MSPS 3V 32-QFN PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC2238CUH#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 10/28頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 10-BIT 65MSPS 3V 32-QFN |
| 標(biāo)準(zhǔn)包裝： | 73 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 65M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 240mW |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 75°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 32-QFN 裸露焊盤（5x5） |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個(gè)單端，雙極; 1 個(gè)差分，雙極 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
LTC2238/LTC2237/LTC2236
18
223876fa
VCM
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO VCM FOR 1V RANGE;
RANGE = 2 VSENSE FOR
0.5V < VSENSE < 1V
1.5V
REFL
2.2
F
2.2
F
INTERNAL ADC
HIGH REFERENCE
BUFFER
0.1
F
223876 F09
4
DIFF AMP
1
F
1
F
INTERNAL ADC
LOW REFERENCE
1.5V BANDGAP
REFERENCE
1V
0.5V
RANGE
DETECT
AND
CONTROL
LTC2238/LTC2237/LTC2236
Figure 9. Equivalent Reference Circuit
APPLICATIO S I FOR ATIO
WU
UU
Reference Operation
Figure 9 shows the LTC2238/LTC2237/LTC2236 reference
circuitry consisting of a 1.5V bandgap reference, a differ-
ence amplifier and switching and control circuit. The inter-
nal voltage reference can be configured for two pin select-
able input ranges of 2V (
±1V differential) or 1V (±0.5V dif-
ferential). Tying the SENSE pin to VDD selects the 2V range;
tying the SENSE pin to VCM selects the 1V range.
The 1.5V 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 generate the
differential reference levels needed by the internal ADC
circuitry. An external bypass capacitor is required for the
1.5V reference output, VCM. 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 two pins. The multiple output
pins are needed to reduce package inductance. Bypass
capacitors must be connected as shown in Figure 9.
Other voltage ranges in-between the pin selectable ranges
can be programmed with two external resistors as shown
in Figure 10. An external reference can be used by applying
its output directly or through a resistor divider to SENSE.
It is not recommended to drive the SENSE pin with a logic
device. The SENSE pin should be tied to the appropriate
level as close to the converter as possible. If the SENSE pin
is driven externally, it should be bypassed to ground as
close to the device as possible with a 1
F ceramic capacitor.
Figure 10. 1.5V Range ADC
VCM
SENSE
1.5V
0.75V
2.2
F
12k
1
F
12k
223876 F10
LTC2238
LTC2237
LTC2236
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7476AAKSZ-500RL7 | IC ADC 12BIT 1MSPS LP SC70-6 |
| D38999/26FG11AN | CONN HSG PLUG 11POS STRGHT PINS |
| D38999/20MC8AB | CONN HSG RCPT 8POS WALL MT PINS |
| D38999/20WG11AA | CONN HSG RCPT 11POS WALL MT PINS |
| D38999/26JC98SNLC | CONN HSG PLUG 10POS STRGHT SCKT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2238IUH | 制造商:Linear Technology 功能描述:ADC Single Pipelined 65Msps 10-bit Parallel 32-Pin QFN EP |
| LTC2238IUH#PBF | 功能描述:IC ADC 10-BIT 65MSPS 3V 32-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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| LTC2238IUH#TRPBF | 功能描述:IC ADC 10BIT 65MSPS 3V 32-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:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 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:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| LTC2239 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 80Msps Low Power 3V ADC |
| LTC2239CUH | 制造商:LINER 制造商全稱:Linear Technology 功能描述:10-Bit, 80Msps Low Noise 3V ADC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。