VDD C1 D VIN+ R1 C2
參數(shù)資料
型號(hào)： AD7266BCPZ-REEL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 7/29頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 2MSPS 3CH 32LFCSP
設(shè)計(jì)資源： AD7266 SAR ADC in DC-Coupled Differential and Single-Ended Appls (CN0039)
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 12
采樣率（每秒）： 2M
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 33.6mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤，CSP
供應(yīng)商設(shè)備封裝： 32-LFCSP-VQ（5x5）
包裝： 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型： 12 個(gè)單端，單極；6 個(gè)差分，單極；6 個(gè)偽差分，單極
其它名稱： AD7266BCPZ-REEL7DKR
AD7266
Rev. B | Page 14 of 28
VDD
C1
D
VIN+
R1 C2
VDD
C1
D
VIN–
R1 C2
04603-015
Figure 18. Equivalent Analog Input Circuit,
Conversion Phase—Switches Open, Track Phase—Switches Closed
When no amplifier is used to drive the analog input, the source
impedance should be limited to low values. The maximum source
impedance depends on the amount of THD that can be toler-
ated. The THD increases as the source impedance increases and
performance degrades. Figure 19 shows a graph of the THD vs.
the analog input signal frequency for different source impedances
in single-ended mode, while Figure 20 shows the THD vs. the
analog input signal frequency for different source impedances
in differential mode.
04
60
3-
0
16
INPUT FREQUENCY (kHz)
600
0
200
100
400
300
500
T
HD
(
d
B)
–50
–60
–55
–65
–70
–75
–80
–85
–90
FSAMPLE = 1.5MSPS
VDD = 3V
RANGE = 0V TO VREF
RSOURCE = 300
RSOURCE = 0
RSOURCE = 10
RSOURCE = 47
RSOURCE = 100
Figure 19. THD vs. Analog Input Frequency for Various
Source Impedances, Single-Ended Mode
04
60
3-
01
7
INPUT FREQUENCY (kHz)
600
700
800
900 1000
0
200
100
400
300
500
TH
D
(
d
B
)
–60
–65
–70
–75
–80
–85
–90
FSAMPLE = 1.5MSPS
VDD = 3V
RANGE = 0V TO VREF
RSOURCE = 300
RSOURCE = 0
RSOURCE = 10
RSOURCE = 47
RSOURCE = 100
Figure 20. THD vs. Analog Input Frequency for
Various Source Impedances, Differential Mode
Figure 21 shows a graph of the THD vs. the analog input
frequency for various supplies while sampling at 2 MSPS. In this
case, the source impedance is 47 Ω.
04603-018
INPUT FREQUENCY (kHz)
600
700
800
900 1000
0
200
100
400
300
500
THD
(dB)
–50
–60
–55
–65
–70
–75
–80
–85
–90
VDD = 3V
SINGLE-ENDED MODE
VDD = 5V
SINGLE-ENDED MODE
VDD = 3V
DIFFERENTIAL MODE
VDD = 5V
DIFFERENTIAL MODE
FSAMPLE = 1.5MSPS/2MSPS
VDD = 3V/5V
RANGE = 0 TO VREF
Figure 21. THD vs. Analog Input Frequency for Various Supply Voltages
ANALOG INPUTS
The AD7266 has a total of 12 analog inputs. Each on-board
ADC has six analog inputs that can be configured as six single-
ended channels, three pseudo differential channels, or three
fully differential channels. These may be selected as described
Single-Ended Mode
The AD7266 can have a total of 12 single-ended analog input
channels. In applications where the signal source has high
impedance, it is recommended to buffer the analog input
before applying it to the ADC. The analog input range can be
programmed to be either 0 to VREF or 0 to 2 × VREF.
If the analog input signal to be sampled is bipolar, the internal
reference of the ADC can be used to externally bias up this
signal to make it correctly formatted for the ADC. Figure 22
shows a typical connection diagram when operating the ADC
in single-ended mode.
VIN
0V
+1.25V
–1.25V
DCAPA/DCAPB
VA1
AD72661
VB6
R
3R
R
0V
+2.5V
0.47F
1ADDITIONAL PINS OMITTED FOR CLARITY.
04
603
-01
9
Figure 22. Single-Ended Mode Connection Diagram
相關(guān)PDF資料
PDF描述
ICL3222CAZ TRANSMITTER/RCVR RS232 LP 20SSOP
ICL3222EIBZ IC 2DRVR/2RCVR RS232 3V 18-SOIC
LTC1443CS#PBF IC COMP W/REF LOWPWR QUAD 16SOIC
ICL3222CVZ IC TXRX DL RS232 3-5.5V 20TSSOP
LTC2496CUHF#PBF IC ADC 16BIT DELTA SIG 38-QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7266BSU 制造商:Analog Devices 功能描述:ADC DUAL SAR 2MSPS 12-BIT SERL 32TQFP - Bulk
AD7266BSUZ 功能描述:IC ADC 12BIT 3CH 2MSPS 32-TQFP 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
AD7266BSUZ-REEL 功能描述:IC ADC 12BIT 3CHAN 2MSPS 32TQFP 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
AD7266BSUZ-REEL7 功能描述:IC ADC 12BIT 3CHAN 2MSPS 32TQFP 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
AD7273 制造商:AD 制造商全稱:Analog Devices 功能描述:3MSPS,10-/12-Bit ADCs in 8-Lead TSOT
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)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(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*