- 您现在的位置：买卖IC网 > PDF目录2137 > AD8264ACPZ-R7 (Analog Devices Inc)IC AMP VGA DIFF QUAD LN 40LFCSP PDF资料下载
参数资料
| 型号： | AD8264ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 22/40页 |
| 文件大小： | 0K |
| 描述： | IC AMP VGA DIFF QUAD LN 40LFCSP |
| 标准包装： | 750 |
| 放大器类型： | 可变增益 |
| 电路数： | 4 |
| 输出类型： | 差分 |
| 转换速率： | 380 V/µs |
| -3db带宽： | 235MHz |
| 电流 - 输入偏压： | 5µA |
| 电流 - 电源： | 99mA |
| 电压 - 电源，单路/双路(±)： | ±2.5 V ~ 5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 40-LFCSP-VQ（6x6） |
| 包装： | 带卷 (TR) |
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页当前第22页第23页第24页第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
AD8264
Rev. A | Page 29 of 40
IPPx
VPOS
IPNx
VOLx
VOHx
INTERPOLATOR
PREAMP
6dB (2×)
OFSx
OPPx
GAIN
INTERFACE
100
747
107
100
+
–
VOCM
COMM
GNHx
GNLO
BIAS
VNEG
NONINVERTING
AMPLIFIER INPUT
INVERTING AMPLIFIER
INPUT (NOT USED)
POWER
SUPPLIES
VGAx
SINGLE-ENDED HS
VGA OUTPUT
DIFFERENTIAL
VGA OUTPUT
OFFSET
ADJUST
OUTPUT COMMON-MODE
VOLTAGE ADJUSTMENT
DIFFERENTIAL GAIN
CONTROL INPUTS
1.2V p-p MAX @ ±2.5V
2V p-p MAX @ ±3.5V TO ±3.3V
3V p-p MAX@ ±5V (PREAMP
DRIVE LIMITED)
2.3nV/
√Hz
DIFFERENTIAL OUTPUT NEVER LIMITS
BECAUSE VGA LIMITS FIRST.
DIFFERENTIAL OUTPUT SWING = 2x VGA OUT
5.2V p-p MAX @ ±2.5V
8V p-p MAX @ ±3.5V TO ±3.3V
15V p-p MAX @ ±5V
73nV/
√Hz
PREAMP OUTPUT
(NOT USED)
2.6V p-p MAX @ ±2.5V
4V p-p MAX @ ±3.5V TO ±3.3V
7.5V p-p MAX @ ±5V
34nV/
√Hz
COMPOSITE GAIN IS +6dB TO +30dB
ATTENUATOR
–24dB TO 0dB
FIXED GAIN VGA
AMPLIFIER
18dB (8×)
DIFFERENTIAL OUTPUT
AMPLIFIER 6dB (2×)
1k
2k
1k
2k
1
2
3
07736-
081
Figure 111. Single-Channel Block Diagram
POST AMPLIFIER
From the preamp input to the VGA output (VGAx), the gain
is noninverting. As can be seen in Figure 111, the VGAx pins
drive the positive input of the differential amplifier. The gain
is inverting from the input of the preamp to the output pin at
VOLx, and the gain is noninverting to the output VOHx.
Other than the input from VGAx, each differential amplifier
has two additional inputs: VOCM and OFSx. A common
VOCM pin is shared among all four postamplifiers, while
separate OFSx pins are provided for each channel.
VOCM Pin
The VOCM pin sets the common-mode voltage of the differential
output and must be biased by an external voltage. When driving
a dc-coupled ADC, the voltage typically comes from the ADC
reference, as shown in the Applications Information section.
If dc level shift is not necessary, the VOCM pin is connected
to ground.
OFSx Pins
The OFSx pins are the inverting inputs of the differential post
amplifiers and can be used to prebias a differential dc offset at
the output. This is very useful when the input is a unipolar pulse
because the user can set up the gain and the offset in such a way
as to optimally map a unipolar pulse into the full-scale input of
an ADC, while dc coupling throughout.
If dc offset is not desired, then the OFSx pins should be connected
to ground. However, the OFSx pins can also be used as separate
inputs if the user wants this function.
NOISE
At maximum gain, the preamplifier is the primary contributor
of noise and results in a differential output referred noise of
roughly 73 nV/√Hz. The noise at the VGAx outputs is 34 nV/√Hz,
and because of the gain-of-2, the VGA output noise is amplified
by 6 dB to 68 nV/√Hz. The differential amplifier, including the
gain setting resistors, contributes another 26 nV/√Hz, and the
rms sum results in a total noise of 73 nV/√Hz. At the lowest
gain, the noise at the VGA output is approximately 19 nV/√Hz, and
when multiplied by two, it results in 38 nV/√Hz at the differential
output; again, rms summing this with the 26 nV/√Hz of the
differential amplifier causes the total output referred noise to
be approximately 46 nV/√Hz.
The input referred noise to the preamplifier at maximum gain
is 2.3 nV/√Hz and increases with decreasing gain. Note that all
noise numbers include the necessary gain setting resistors.
相关PDF资料 |
PDF描述 |
|---|---|
| AD826AR-REEL7 | IC OPAMP VF 50MHZ DUAL LP 8SOIC |
| AD8270ACPZ-R7 | IC AMP DIFF 20MHZ DUAL 16LFCSP |
| AD8271BRMZ-R7 | IC AMP PGA 15MHZ LDIST 10MSOP |
| AD8273ARZ-R7 | IC AMP AUDIO 2CH DIFF 14SOIC |
| AD8274ARZ | IC AMP DIFF 20MHZ LDIST 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8264ACPZ-RL | 功能描述:IC AMP VGA DIFF QUAD LN 40LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:带卷 (TR) |
| AD8264-EVALZ | 功能描述:BOARD EVAL FOR AD8264 VGA RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD826AN | 制造商:Analog Devices 功能描述:OP Amp Dual Volt Fdbk 制造商:Rochester Electronics LLC 功能描述:DUAL, HIGH SPEED OP AMP - Bulk 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| AD826ANZ | 功能描述:IC OPAMP VF 50MHZ DUAL LP 8DIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD826ANZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
发布紧急采购，3分钟左右您将得到回复。