参数资料
| 型号： | AD7626BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 10MSPS DIFF 32LFCSP |
| 设计资源： | Single-Ended-to-Differential High Speed Drive Circuit for 16-Bit, 10 MSPS AD7626 ADC (CN0105) |
| 特色产品： | AD7626 PulSAR Differential ADC |
| 标准包装： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 10M |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 170mW |
| 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： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ（5x5） |
| 包装： | 托盘 |
| 输入数目和类型： | 2 个单端，单极；1 个差分，双极 |
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页当前第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页第25页第26页第27页第28页
AD7626
Data Sheet
Rev. B | Page 18 of 28
DRIVING THE AD7626
Differential Analog Input Source
Figure 33 shows an ADA4899-1 driving each differential input
to the AD7626.
Single-Ended-to-Differential Driver
For applications using unipolar analog signals, a single-
ended-to-differential driver (as shown in Figure 32) allows
for a differential input into the part. This configuration, when
provided with an input signal of 0 V to 4.096 V, produces a
differential ±4.096 V with midscale at 2.048 V. The one-pole
filter using R = 20 Ω and C = 56 pF provides a corner frequency
of 140 MHz. The VCM output of the AD7626 can be buffered
and then used to provide the required 2.048 V common-mode
voltage.
Single-Ended or Fully Differential High Frequency Driver
In applications that require higher input frequency tones, the
ADA4932-1 can be used to drive the inputs to the AD7626. The
ADA4932-1 is a differential driver, which also allows the user
the option of single-ended-to-differential conversion.
Figure 34 shows the typical circuit for a 50 Ω source impedance
(ac-coupled in this example). The input to the ADA4932-1 is
configured to be balanced to the source impedance (in this case
50 Ω). Further information on balancing the input impedance
to the source impedance can be found on the ADA4932-1
datasheet. The circuit shown in Figure 34 operates with an
overall gain of ~0.5 when the termination input termination
is taken into account.
Alternatively, the ADA4932-1 can be used with a fully diffe-
rential source—it acts as an inverting differential driver.
56pF
20
50
IN+
IN–
AD7626
VCM
V–
V+
AD8031, AD8032
U2
U1
ADA4899-1
56pF
100nF
590
ANALOG INPUT
(UNIPOLAR 0V TO 4.096V)
0
76
48
-03
3
Figure 32. Single-Ended-to-Differential Driver Circuit Using ADA4899-1
56pF
20
–VS
0V TO VREF
+VS
56pF
20
–VS
VREF TO 0V
+VS
CREF
10F2
REF1
REF
GND
IN+
IN–
AD7626
ADA4899-1
1SEE THE VOLTAGE REFERENCE OPTIONS SECTION. CONNECTION TO EXTERNAL REFERENCE SIGNALS
IS DEPENDENT ON THE EN1 AND EN0 SETTINGS.
2CREF IS USUALLY A 10F CERAMIC CAPACITOR WITH LOW ESL AND ESR.
DECOUPLE REF AND REFIN PINS AS PER THE EN1 AND EN0 RECOMMENDATIONS
VCM
–VS
+VS
BUFFERED VCM PIN OUTPUT
GIVES THE REQUIRED 2.048V
COMMON-MODE SUPPLY FOR
ANALOG INPUTS.
VCM
2.048V
AD8031, AD8032
ADA4899-1
REFIN
REF1
CREF
10F2
0.1F
07
64
8-
02
5
Figure 33. Driving the AD7626 from a Differential Analog Source Using ADA4899-1
相关PDF资料 |
PDF描述 |
|---|---|
| AD7628KN | IC DAC 8BIT DUAL MULTIPLY 20-DIP |
| AD7631BCPZ | IC ADC 18BIT 250KSPS BIP 48LFCSP |
| AD7634BCPZ | IC ADC 18BIT BIPO PROGR 48-LFCSP |
| AD7641BSTZRL | IC ADC 18BIT 2MSPS SAR 48-LQFP |
| AD7643BCPZ | IC ADC 18BIT DIFF W/REF 48LFCSP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7626BCPZ-RL7 | 功能描述:IC ADC 16BIT 10MSPS DIFF 32LFCSP 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 |
| AD7628 | 制造商:AD 制造商全称:Analog Devices 功能描述:CMOS Dual 8-Bit Buffered Multiplying DAC |
| AD7628BFN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7628BN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7628BQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
发布紧急采购，3分钟左右您将得到回复。