- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10062 > AD9212ABCPZ-40 (Analog Devices Inc)IC ADC 10BIT SRL 40MSPS 64LFCSP PDF資料下載
參數(shù)資料
| 型號： | AD9212ABCPZ-40 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 15/56頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 10BIT SRL 40MSPS 64LFCSP |
| 標準包裝： | 1 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 40M |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉換器數(shù)目： | 8 |
| 功率耗散（最大）： | 560mW |
| 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： | 64-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 64-LFCSP-VQ（9x9） |
| 包裝： | 托盤 |
| 輸入數(shù)目和類型： | 16 個單端，單極；8 個差分，單極 |
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頁第10頁第11頁第12頁第13頁第14頁當前第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頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
AD9212
Data Sheet
Rev. E | Page 22 of 56
For best dynamic performance, the source impedances driving
VIN + x and VIN x should be matched such that common-mode
settling errors are symmetrical. These errors are reduced by the
common-mode rejection of the ADC. An internal reference buffer
creates the positive and negative reference voltages, REFT and
REFB, respectively, that define the span of the ADC core. The
output common mode of the reference buffer is set to midsupply,
and the REFT and REFB voltages and span are defined as
REFT = 1/2 (AVDD + VREF)
REFB = 1/2 (AVDD VREF)
Span = 2 × (REFT REFB) = 2 × VREF
It can be seen from these equations that the REFT and REFB
voltages are symmetrical about the midsupply voltage and, by
definition, the input span is twice the value of the VREF voltage.
Maximum SNR performance is achieved by setting the ADC to
the largest span in a differential configuration. In the case of the
AD9212, the largest input span available is 2 V p-p.
Differential Input Configurations
There are several ways to drive the AD9212 either actively or
passively; however, optimum performance is achieved by driving
the analog input differentially. For example, using the AD8334
differential driver to drive the AD9212 provides excellent perfor-
mance and a flexible interface to the ADC (see Figure 50) for
baseband applications. This configuration is commonly used
for medical ultrasound systems.
For applications where SNR is a key parameter, differential
transformer coupling is the recommended input configuration
(see Figure 47 and Figure 48), because the noise performance of
most amplifiers is not adequate to achieve the true performance
of the AD9212.
Regardless of the configuration, the value of the shunt capacitor,
C, is dependent on the input frequency and may need to be
reduced or removed.
2V p-p
CDIFF1
C
1CDIFF IS OPTIONAL.
49.9
0.1μF
1k
AGND
AVDD
ADT1-1WT
1:1 Z RATIO
VIN – x
ADC
AD9212
VIN + x
C
05
96
8-
0
18
Figure 47. Differential Transformer-Coupled Configuration
for Baseband Applications
ADC
AD9212
2V p-p
2.2pF
1k
0.1μF
1k
AVDD
ADT1-1WT
1:1 Z RATIO
16nH
0.1μF
16nH
33
499
65
VIN+x
VIN– x
059
68-
01
9
Figure 48. Differential Transformer-Coupled Configuration for IF Applications
Single-Ended Input Configuration
A single-ended input may provide adequate performance in
cost-sensitive applications. In this configuration, SFDR and
distortion performance degrade due to the large input common-
mode swing. If the application requires a single-ended input
configuration, ensure that the source impedances on each input
are well matched in order to achieve the best possible performance.
A full-scale input of 2 V p-p can still be applied to the ADC’s
VIN + x pin while the VIN x pin is terminated. Figure 49
details a typical single-ended input configuration.
2V p-p
R
49.9
0.1F
AVDD
1k 25
1k
AVDD
VIN – x
ADC
AD9212
VIN + x
CDIFF1
C
1CDIFF IS OPTIONAL.
C
05
96
8-
02
0
Figure 49. Single-Ended Input Configuration
05
96
8-
0
21
AD8334
1.0k
374
187
R
C
0.1μF
187
0.1μF
0.1μF10μF
0.1μF
1V p-p
0.1μF
LNA
120nH
VGA
VOH
VIP
INH
22pF
LMD
VIN
LOP
LON
VOL
18nF
274
VIN – x
ADC
AD9212
VIN + x
1k
AVDD
Figure 50. Differential Input Configuration Using the AD8334
相關PDF資料 |
PDF描述 |
|---|---|
| MS27466T23F53PD | CONN RCPT 53POS WALL MT W/PINS |
| AD7871JPZ-REEL | IC ADC 14BIT SAMPLING 28-PLCC |
| LTC2369HMS-18#TRPBF | IC ADC 18BIT SRL/SPI 16-MSOP |
| IDT7284L12PA8 | IC FIFO 2048X18 12NS 56TSSOP |
| D38999/24FC8SD | CONN RCPT 8POS JAM NUT W/SCKT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD9212ABCPZ-65 | 功能描述:IC ADC 10BIT SRL 65MSPS 64LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝: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） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD9212ABCPZRL7-40 | 功能描述:IC ADC 10BIT SRL 40MSPS 64LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝: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） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD9212ABCPZRL7-65 | 功能描述:IC ADC 10BIT SRL 65MSPS 64LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝: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） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD9212BCPZ-40 | 制造商:Analog Devices 功能描述:ADC Octal Pipelined 40Msps 10-bit Serial 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:IC 10BIT ADC 40/65MSPS 1.8V SMD 制造商:Analog Devices 功能描述:IC, 10BIT ADC, 40/65MSPS, 1.8V, SMD |
| AD9212BCPZ-65 | 制造商:Analog Devices 功能描述:ADC Octal Pipelined 65Msps 10-bit Serial 64-Pin LFCSP EP |
發(fā)布緊急采購，3分鐘左右您將得到回復。