- 您现在的位置：买卖IC网 > PDF目录10512 > AD9222ABCPZ-65 (Analog Devices Inc)IC ADC 12BIT SRL 65MSPS 64LFCSP PDF资料下载
参数资料
| 型号： | AD9222ABCPZ-65 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 25/60页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SRL 65MSPS 64LFCSP |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 65M |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 8 |
| 功率耗散（最大）： | 950.5mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 64-LFCSP-VQ（9x9） |
| 包装： | 托盘 |
| 输入数目和类型： | 16 个单端，单极；8 个差分，单极 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页当前第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页
Data Sheet
AD9222
Rev. F | Page 31 of 60
CSB Pin
The CSB pin should be tied to AVDD for applications that do
not require SPI mode operation. By tying CSB high, all SCLK
and SDIO information is ignored. This pin is both 1.8 V and
3.3 V tolerant.
RBIAS Pin
To set the internal core bias current of the ADC, place a resistor
(nominally equal to 10.0 k) to ground at the RBIAS pin. The
resistor current is derived on-chip and sets the AVDD current of
the ADC to a nominal 450 mA at 65 MSPS. Therefore, it is
imperative that at least a 1% tolerance on this resistor be used to
achieve consistent performance
Voltage Reference
A stable, accurate 0.5 V voltage reference is built into the
AD9222. This is gained up internally by a factor of 2, setting
VREF to 1.0 V, which results in a full-scale differential input span
of 2 V p-p. The VREF is set internally by default; however, the
VREF pin can be driven externally with a 1.0 V reference to
improve accuracy.
When applying the decoupling capacitors to the VREF, REFT,
and REFB pins, use ceramic low-ESR capacitors. These capacitors
should be close to the ADC pins and on the same layer of the
PCB as the AD9222. The recommended capacitor values and
configurations for the AD9222 reference pin are shown in
Table 13. Reference Settings
Selected Mode
SENSE Voltage
Resulting VREF (V)
Resulting
Differential
Span (V p-p)
External
Reference
AVDD
N/A
2 × external
reference
Internal,
2 V p-p FSR
AGND to 0.2 V
1.0
2.0
Internal Reference Operation
A comparator within the AD9222 detects the potential at the
SENSE pin and configures the reference. If SENSE is grounded,
the reference amplifier switch is connected to the internal
resistor divider (see Figure 79), setting VREF to 1 V.
The REFT and REFB pins establish their input span of the ADC
core from the reference configuration. The analog input full-
scale range of the ADC equals twice the voltage at the reference
pin for either an internal or an external reference configuration.
If the reference of the AD9222 is used to drive multiple
converters to improve gain matching, the loading of the refer-
ence by the other converters must be considered. Figure 81
depicts how the internal reference voltage is affected by loading.
1F
0.1F
VREF
SENSE
0.5V
REFT
0.1F
4.7F
0.1F
REFB
SELECT
LOGIC
ADC
CORE
+
VIN – x
VIN + x
05967-
064
Figure 79. Internal Reference Configuration
1F1
0.1F1
VREF
SENSE
AVDD
0.5V
REFT
0.1F
4.7F
0.1F
REFB
SELECT
LOGIC
ADC
CORE
+
VIN – x
VIN + x
EXTERNAL
REFERENCE
1OPTIONAL.
05967-
065
Figure 80. External Reference Operation
相关PDF资料 |
PDF描述 |
|---|---|
| MS3102E28-3S | CONN RCPT 3POS BOX MNT W/SCKT |
| LTC2220CUP-1#PBF | IC ADC 12BIT 185MSPS 64-QFN |
| MS3102E32-17PX | CONN RCPT 4POS BOX MNT W/PINS |
| UP050CH120J-B-B | CAP CER 12PF 50V 5% AXIAL |
| VE-BTY-MV | CONVERTER MOD DC/DC 3.3V 99W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9222ABCPZRL7-40 | 制造商:Analog Devices 功能描述:ADC OCTAL PIPELINED 40MSPS 12-BIT SERL 64LFCSP EP - Tape and Reel |
| AD9222ABCPZRL7-50 | 功能描述:IC ADC 12BIT SRL 50MSPS 64LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD9222ABCPZRL7-65 | 功能描述:IC ADC 12BIT SRL 65MSPS 64LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD9222BCPZ-40 | 制造商:Analog Devices 功能描述:Octal ADC Pipelined 40Msps 12-bit Serial 64-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述: |
| AD9222BCPZ-50 | 制造商:Analog Devices 功能描述:ADC Octal Pipelined 50Msps 12-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:12BIT ADC OCTAL 50MSPS LFCSP-64 |
发布紧急采购，3分钟左右您将得到回复。