- 您現在的位置：買賣IC網 > PDF目錄5912 > AD8224ACPZ-WP (Analog Devices Inc)IC AMP INST JFET R-R LP 16LFCSP PDF資料下載
參數資料
| 型號： | AD8224ACPZ-WP |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 13/28頁 |
| 文件大小： | 0K |
| 描述： | IC AMP INST JFET R-R LP 16LFCSP |
| 標準包裝： | 64 |
| 放大器類型： | 儀表 |
| 電路數： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 2 V/µs |
| -3db帶寬： | 1.5MHz |
| 電流 - 輸入偏壓： | 25pA |
| 電壓 - 輸入偏移： | 300µV |
| 電流 - 電源： | 750µA |
| 電流 - 輸出 / 通道： | 15mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 36 V，±2.25 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 16-LFCSP-VQ |
| 包裝： | 托盤 - 晶粒 |
| 配用： | AD8224-EVALZ-ND - BOARD EVALUATION AD8224 |
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頁當前第13頁第14頁第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
AD8224
Data Sheet
Rev. C | Page 20 of 28
THEORY OF OPERATION
Q2
Q1
NODE A
NODE B
NODE C
NODE D
VB
C1
C2
A1
A2
–VS
+VS
–VS
J1
+IN
VPINCH
+VS
–VS
J2
–IN
VPINCH
+VS
–VS
RG
+VS
–VS
20kΩ
+VS
–VS
+VS
–VS
REF
OUTPUT
A3
NODE E
NODE F
I
R2
24.7kΩ
R1
24.7kΩ
06286-
057
Figure 55. Simplified Schematic
The AD8224 is a JFET input, monolithic instrumentation amplifier
based on the classic three op amp topology (see Figure 55). Input
Transistor J1 and Input Transistor J2 are biased at a fixed current so
that any input signal forces the output voltages of A1 and A2 to
change accordingly. The input signal creates a current through RG
that flows in R1 and R2 such that the outputs of A1 and A2 provide
the correct, gained signal. Topologically, J1, A1, and R1 and J2, A2,
and R2 can be viewed as precision current feedback amplifiers. The
common-mode voltage and amplified differential signal from
A1 and A2 are applied to a difference amplifier that rejects the
common-mode voltage but amplifies the differential signal. The
difference amplifier employs 20 k laser trimmed resistors that
result in an in-amp with a gain error of less than 0.04%. New trim
techniques were developed to ensure that the CMRR exceeds 86 dB
(G = 1).
Using JFET transistors, the AD8224 offers an extremely high
input impedance, extremely low bias currents of 10 pA maximum,
low offset current of 0.6 pA maximum, and no input bias
current noise. In addition, input offset is less than 175 V
and drift is less than 5 V/°C. Ease of use and robustness were
considered. A common problem for instrumentation amplifiers
is that at high gains, when the input is overdriven, an excessive
milliampere input bias current can result, and the output can
undergo phase reversal.
Overdriving the input at high gains refers to when the input
signal is within the supply voltages but the amplifier cannot
output the gained signal. For example, at a gain of 100, driving
the amplifier with 10 V on ±15 V constitutes overdriving the
inputs because the amplifier cannot output 100 V.
The AD8224 has none of these problems; its input bias current
is limited to less than 10 A, and the output does not phase
reverse under overdrive fault conditions.
The AD8224 has extremely low load induced nonlinearity. All
amplifiers that comprise the AD8224 have rail-to-rail output
capability for enhanced dynamic range. The input of the AD8224
can amplify signals with wide common-mode voltages even slightly
lower than the negative supply rail. The AD8224 operates over a
wide supply voltage range. It can operate from either a single
+4.5 V to +36 V supply or a dual ±2.25 V to ±18 V. The transfer
function of the AD8224 is
G
R
G
kΩ
49.4
1 +
=
Users can easily and accurately set the gain using a single,
standard resistor. Because the input amplifiers employ a current
feedback architecture, the AD8224 gain bandwidth product
increases with gain, resulting in a system that does not experience
as much bandwidth loss as voltage feedback architectures at
higher gains.
GAIN SELECTION
Placing a resistor across the RG terminals sets the gain of the
AD8224. This is calculated by referring to Table 12 or by using
the following gain equation
1
kΩ
49.4
=
G
RG
相關PDF資料 |
PDF描述 |
|---|---|
| 929647-04-27-I | CONN HEADER .100 SNGL STR 27POS |
| AD8037ANZ | IC OPAMP VF ULDIST LN 70MA 8DIP |
| TMM-132-01-G-S-SM | CONN HEADER 32POS SNGL 2MM SMD |
| SL1411A075SM | GAS TUBE GDT 10KA 75V SMD |
| LT1807IS8#TRPBF | IC OPAMP R-R I/O DUAL LN 8SOIC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8224BCPZ-R7 | 功能描述:IC AMP INST JFET R-R LP 16LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:100 系列:- 放大器類型:通用 電路數:1 輸出類型:- 轉換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:管件 |
| AD8224BCPZ-RL | 功能描述:IC AMP INST JFET R-R LP 16LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數:1 輸出類型:- 轉換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD8224BCPZ-WP | 功能描述:IC AMP INST JFET R-R LP 16LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數:1 輸出類型:- 轉換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD8224-EVALZ | 功能描述:BOARD EVALUATION AD8224 RoHS:是 類別:編程器，開發系統 >> 評估板 - 運算放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| AD8224HACPZ-R7 | 功能描述:IC AMP INST DUAL PREC LN 16LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:150 系列:- 放大器類型:音頻 電路數:2 輸出類型:- 轉換速率:5 V/µs 增益帶寬積:12MHz -3db帶寬:- 電流 - 輸入偏壓:100nA 電壓 - 輸入偏移:500µV 電流 - 電源:6mA 電流 - 輸出 / 通道:50mA 電壓 - 電源，單路/雙路(±):4 V ~ 32 V，±2 V ~ 16 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:8-TSSOP 包裝:管件 |
發布緊急采購，3分鐘左右您將得到回復。