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| 型號： | AD8224HBCPZ-WP |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/28頁 |
| 文件大小： | 0K |
| 描述： | IC AMP INST DUAL PREC LN 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： | 10pA |
| 電壓 - 輸入偏移： | 175µV |
| 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 ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VQFN，CSP |
| 供應商設備封裝： | 16-LFCSP（4x4） |
| 包裝： | 托盤 - 晶粒 |
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Precision, Dual-Channel, JFET Input,
Rail-to-Rail Instrumentation Amplifier
Data Sheet
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2007–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Two channels in a small 4 mm × 4 mm LFCSP
Custom LFCSP package with hidden paddle
Permits routing and vias underneath package
Allows full bias current performance
Low input currents
10 pA maximum input bias current (B Grade)
0.6 pA maximum input offset current (B Grade)
High CMRR
100 dB CMRR (minimum), G = 10 (B Grade)
90 dB CMRR (minimum) to 10 kHz, G = 10 (B Grade)
Excellent ac specifications and low power
1.5 MHz bandwidth (G = 1)
14 nV/√Hz input noise (1 kHz)
Slew rate: 2 V/μs
750 μA quiescent current per amplifier
Versatility
Rail-to-rail output
Input voltage range to below negative supply rail
4 kV ESD protection
4.5 V to 36 V single supply
±2.25 V to ±18 V dual supply
Gain set with single resistor (G = 1 to 1000)
APPLICATIONS
Medical instrumentation
Precision data acquisition
Transducer interfaces
Differential drives for high resolution input ADCs
Remote sensors
FUNCTIONAL BLOCK DIAGRAM
AD8224
1
2
3
4
12
11
10
9
56
7
8
13
14
15
16
–IN1
RG1
+IN1
–IN2
RG2
+IN2
+V
S
RE
F
1
RE
F
2
–V
S
+V
S
OU
T
1
OU
T
2
–V
S
06
28
6-
00
1
Figure 1.
Table 1. In Amps and Difference Amplifiers by Category
High
Perform
Low
Cost
High
Voltage
Mil
Grade
Low
Power
Digital
Gain
1 Rail-to-rail output.
GENERAL DESCRIPTION
The AD8224 is the first single-supply, JFET input instrumentation
amplifier available in the space-saving 16-lead, 4 mm × 4 mm
LFCSP. It requires the same board area as a typical single
instrumentation amplifier yet doubles the channel density
and offers a lower cost per channel without compromising
performance.
Designed to meet the needs of high performance, portable
instrumentation, the AD8224 has a minimum common-mode
rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR
of 80 dB at 10 kHz for G = 1. Maximum input bias current is
10 pA and typically remains below 300 pA over the entire
industrial temperature range. Despite the JFET inputs, the
AD8224 typically has a noise corner of only 10 Hz.
With the proliferation of mixed-signal processing, the number
of power supplies required in each system has grown. Designed
to alleviate this problem, the AD8224 can operate on a ±18 V
dual supply, as well as on a single +5 V supply. The device’s rail-
to-rail output stage maximizes dynamic range on the low voltage
supplies common in portable applications. Its ability to run on a
single 5 V supply eliminates the need for higher voltage, dual
supplies. The AD8224 draws 750 μA of quiescent current per
amplifier, making it ideal for battery powered devices.
In addition, the AD8224 can be configured as a single-channel,
differential output, instrumentation amplifier. Differential
outputs provide high noise immunity, which can be useful when
the output signal must travel through a noisy environment, such
as with remote sensors. The configuration can also be used to
drive differential input ADCs. For a single-channel version, use
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