- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10689 > AD7266BCPZ-REEL7 (Analog Devices Inc)IC ADC 12BIT 2MSPS 3CH 32LFCSP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7266BCPZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/29頁 |
| 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 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第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頁第29頁
AD7266
Rev. B | Page 15 of 28
Differential Mode
The AD7266 can have a total of six differential analog
input pairs.
Differential signals have some benefits over single-ended
signals, including noise immunity based on the device’s
common-mode rejection and improvements in distortion
performance. Figure 23 defines the fully differential analog
input of the AD7266.
VIN+
AD72661
VIN–
VREF p-p
COMMON
MODE
VOLTAGE
1ADDITIONAL PINS OMITTED FOR CLARITY.
04603-020
Figure 23. Differential Input Definition
The amplitude of the differential signal is the difference
between the signals applied to the VIN+ and VIN pins in each
differential pair (VIN+ VIN). VIN+ and VIN should be
simultaneously driven by two signals each of amplitude VREF
(or 2 × VREF, depending on the range chosen) that are 180° out
of phase. The amplitude of the differential signal is, therefore
(assuming the 0 to VREF range is selected) VREF to +VREF peak-
to-peak (2 × VREF), regardless of the common mode (CM).
The common mode is the average of the two signals
(VIN+ + VIN)/2
and is, therefore, the voltage on which the two inputs are
centered.
This results in the span of each input being CM ± VREF/2. This
voltage has to be set up externally and its range varies with the
reference value, VREF. As the value of VREF increases, the common-
mode range decreases. When driving the inputs with an amplifier,
the actual common-mode range is determined by the amplifier’s
output voltage swing.
typically varies with VREF for a 5 V power supply using the 0 to
VREF range or 2 × VREF range, respectively. The common mode
must be in this range to guarantee the functionality of the AD7266.
When a conversion takes place, the common mode is rejected,
resulting in a virtually noise free signal of amplitude VREF to
+VREF corresponding to the digital codes of 0 to 4096. If the
2 × VREF range is used, then the input signal amplitude extends
from 2 VREF to +2 VREF after conversion.
04
60
3-
0
2
1
VREF (V)
5.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
CO
M
O
N-
M
O
D
E
RANG
E
(V
)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
TA = 25°C
Figure 24. Input Common-Mode Range vs. VREF (0 to VREF Range, VDD = 5 V)
04603-022
VREF (V)
2.5
0
0.5
1.0
1.5
2.0
COMMON-MODE
RANGE
(V
)
5.0
4.0
4.5
3.0
3.5
2.0
2.5
0.5
1.0
1.5
0
TA = 25°C
Figure 25. Input Common-Mode Range vs. VREF (2 × VREF Range, VDD = 5 V)
Driving Differential Inputs
Differential operation requires that VIN+ and VIN be
simultaneously driven with two equal signals that are 180° out
of phase. The common mode must be set up externally. The
common-mode range is determined by VREF, the power supply,
and the particular amplifier used to drive the analog inputs.
Differential modes of operation with either an ac or dc input
provide the best THD performance over a wide frequency
range. Because not all applications have a signal preconditioned
for differential operation, there is often a need to perform
single-ended-to-differential conversion.
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，3分鐘左右您將得到回復(fù)。