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| 型号： | ADA4800ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP CCD BUFFER HS LP 6LFCSP |
| 标准包装： | 1 |
| 放大器类型： | 缓冲器 |
| 电路数： | 1 |
| 转换速率： | 145 V/µs |
| -3db带宽： | 400MHz |
| 电流 - 输入偏压： | 1µA |
| 电压 - 输入偏移： | 30000µV |
| 电流 - 电源： | 1.4mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 17 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-UFDFN 裸露焊盘，CSP |
| 供应商设备封装： | 6-LFCSP-UD（1.6x1.6） |
| 包装： | 标准包装 |
| 其它名称： | ADA4800ACPZ-R7DKR |
ADA4800
Rev. A | Page 10 of 16
THEORY OF OPERATION
The ADA4800 is a buffer integrated with an active load. Each
element (the active load and the buffer) operates independently,
as described in the following sections.
Figure 22 illustrates an ADA4800 application configuration for
using this power save feature.
An external resistor connected between the ISF and the
microcontroller GPO pin determines the amount of current
that flows into the input pin. This current can be calculated
by using Equation 1 and Equation 2.
SETTING ACTIVE LOAD CURRENT WITH PIN 6 (ISF)
The ISF pin is used to establish the value of the active current
load (IAL). Set the ISF current using Equation 1.
kΩ
3
V
55
.
1
+
=
ISF
R
V
I
(1)
SETTING BANDWIDTH WITH PIN 4 (IDRV)
The IDRV pin establishes the buffer’s ICC quiescent current.
As ICC is increased, power dissipation and bandwidth both
increase. Set the current using Equation 3.
where:
VISF is referenced to Pin 2. VISF can be an external voltage source,
VCC, or a GPO output as explained in the following paragraphs.
RISF is the external resistor between the ISF pin and VISF.
kΩ
28
V
8
.
0
+
=
IDRV
R
V
I
(3)
where:
VIDRV is referenced to Pin 2. VIDRV can be an external voltage
source or VCC.
RIDRV is the external resistor between the IDRV pin and VIDRV.
The active load current (into the IN pin) is directly proportional
to IISF and can be calculated by Equation 2.
IAL = IISF × 27
(2)
The ADA4800 allows for additional power savings by reducing
the active load current. The active load current can be logically
controlled by connecting the ISF pin to any general-purpose
output (GPO) pin of a system microcontroller through an
external resistor. A GPO logic high enables the flow of the
active load current. Appling –VS or connecting a high-Z to the
ISF pin places the ADA4800 into power save mode by shutting
down the active load current.
The ICC current is directly proportional to IIDRV and can be
calculated by Equation 4.
ICC = IIDRV × 26
(4)
Applying –VS to the IDRV pin shuts down the buffer.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADA4800ACPZ-RL | 功能描述:IC AMP CCD BUFFER HS LP 6LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:160 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:10 V/µs 增益带宽积:9MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:250µV 电流 - 电源:730µA 电流 - 输出 / 通道:28mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 |
| ADA4805-1AKSZ-EBZ | 功能描述:SC-70-6 Package 1 - Single Channels per IC General Purpose Amplifier Evaluation Board 制造商:analog devices inc. 系列:- 零件状态:过期 每 IC 通道数:1 - 单 放大器类型:通用 输出类型:- 压摆率:- -3db 带宽:- 电流 - 输出/通道:- 工作温度:- 电流 - 电源（主 IC）:- 电压 - 电源，单/双（±）:- 板类型:裸（未填充） 所含物品:板 使用的 IC/零件:SC-70-6 封装 标准包装:1 |
| ADA4805-1AKSZ-R2 | 功能描述:General Purpose Amplifier 1 Circuit Rail-to-Rail SC-70 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:有效 放大器类型:通用 电路数:1 输出类型:满摆幅 压摆率:160 V/μs 增益带宽积:- -3db 带宽:105MHz 电流 - 输入偏置:470nA 电压 - 输入失调:9μV 电流 - 电源:500μA 电流 - 输出/通道:73mA 电压 - 电源，单/双（±）:3 V ~ 5 V，±1.5 V ~ 5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSSOP，SC-88，SOT-363 供应商器件封装:SC-70 标准包装:1 |
| ADA4805-1AKSZ-R7 | 功能描述:IC OP AMP R-R 105MHZ LP SC70-6 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 放大器类型:通用 电路数:1 输出类型:满摆幅 压摆率:160 V/μs -3db 带宽:105MHz 电流 - 输入偏置:470nA 电压 - 输入失调:9μV 电流 - 电源:500μA 电流 - 输出/通道:73mA 电压 - 电源，单/双（±）:3 V ~ 5 V，±1.5 V ~ 5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSSOP，SC-88，SOT-363 供应商器件封装:SC-70 标准包装:1 |
| ADA4805-1ARJZ-EBZ | 功能描述:SOT-23-6 Package 1 - Single Channels per IC General Purpose Amplifier Evaluation Board 制造商:analog devices inc. 系列:- 零件状态:过期 每 IC 通道数:1 - 单 放大器类型:通用 输出类型:- 压摆率:- -3db 带宽:- 电流 - 输出/通道:- 工作温度:- 电流 - 电源（主 IC）:- 电压 - 电源，单/双（±）:- 板类型:裸（未填充） 所含物品:板 使用的 IC/零件:SOT-23-6 封装 标准包装:1 |
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