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| 型號(hào)： | AD822ANZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP R-R 1.9MHZ DUAL 8DIP |
| 設(shè)計(jì)資源： | 16-Bit Fully Isolated 4 mA to 20 mA Output Module Using AD5662, ADuM1401, and External Amplifiers (CN0064) |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 3 V/µs |
| 增益帶寬積： | 1.9MHz |
| -3db帶寬： | 1.9MHz |
| 電流 - 輸入偏壓： | 2pA |
| 電壓 - 輸入偏移： | 400µV |
| 電流 - 電源： | 1.4mA |
| 電流 - 輸出 / 通道： | 20mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 36 V，±1.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 8-PDIP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 773 (CN2011-ZH PDF) |
AD822
Rev. I | Page 20 of 24
SINGLE-SUPPLY PROGRAMMABLE GAIN
INSTRUMENTATION AMPLIFIER
The AD822 can be configured as a single-supply instrumenta-
tion amplifier that is able to operate from single supplies down
to 3 V or dual supplies up to ±15 V. Using only one AD822 rather
than three separate op amps, this circuit is cost and power efficient.
The 2 pA bias currents of the AD822 FET inputs minimize
offset errors caused by high unbalanced source impedances.
An array of precision thin film resistors sets the in-amp gain to
be either 10 or 100. These resistors are laser trimmed to ratio
match to 0.01% and have a maximum differential TC of 5 ppm/°C.
Table 6. In-Amp Performance
Parameters
VS = 3 V, 0 V
VS = ±5 V
CMRR
74 dB
80 dB
Common-Mode Voltage Range
0.2 V to +2 V
5.2 V to +4 V
3 dB BW
G = 10
180 kHz
G = 100
18 kHz
tSETTLING
2 V Step
2 μs
5 V Step
5 μs
Noise @ f = 1 kHz
G = 10
270 nV/√Hz
G = 100
2.2 μV/√Hz
ISUPPLY (Total)
1.10 mA
1.15 mA
90
100
10
0%
....
.... .... . ..
... .... . ... . ... . ...
....
.... .... . . .. .... .... .... .... . ...
1V
5s
00
87
4-
04
8
Figure 48. Pulse Response of In-Amp to a 500 mV p-p Input Signal;
VS = 5 V, 0 V; Gain = 0
G = 100
G = 10
1
2
3
4
5
6
7
+
–
+
–
0
087
4-
0
49
OHMTEK
PART # 1043
R5
9k
R4
1k
R3
1k
R2
9k
R1
90k
R6
90k
VREF
V+
0.1F
1/2
AD822
1/2
AD822
VOUT
+
–
+
–
VIN1
VIN2
RP
1k
RP
1k
(G = 10) VOUT = (VIN1 – VIN2)+VREF
1+
R6
R4 + R5
()
(G = 100) VOUT = (VIN1 – VIN2)+VREF
R5 + R6
R4
1+
()
Figure 49. A Single-Supply Programmable Instrumentation Amplifier
LOW DROPOUT BIPOLAR BRIDGE DRIVER
The AD822 can be used for driving a 350 Ω Wheatstone bridge.
Figure 50 shows one-half of the AD822 being used to buffer the
AD589, a 1.235 V low power reference. The output of 4.5 V can
be used to drive an analog-to-digital converter (ADC) front end.
The other half of the AD822 is configured as a unity-gain inverter
and generates the other bridge input of 4.5 V. Resistor R1 and
Resistor R2 provide a constant current for bridge excitation. The
AD620 low power instrumentation amplifier is used to condition
the differential output voltage of the bridge. The gain of the AD620
is programmed using an external resistor RG and determined by
1
k
9
.
49
G
R
G
+1.235V
49.9k
R1
20
25.4k
1%
10k
1%
350
350
350
350
RG
AD589
10k
1%
10k
1%
R2
20
–4.5V
GND
+5V
–5V
1/2
AD822
+
–
+
–
1/2
AD822
8
3
2
1
V+
+VS
–VS
VREF
V+
V–
+
–
AD620
+
–
2
3
4
5
6
7
0.1
μF
0.1
μF
1
μF
1
μF
++
6
5
7
4
TO A/D CONVERTER
REFERENCE INPUT
00
87
4-
0
51
Figure 50. Low Dropout Bipolar Bridge Driver
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD822ANZ | 制造商:Analog Devices 功能描述:Operational Amplifier (Op-Amp) IC |
| AD822AR | 功能描述:IC OPAMP GP R-R 1.9MHZ LP 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 放大器類型:音頻 電路數(shù):2 輸出類型:- 轉(zhuǎn)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(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| AD822AR-3V | 制造商:AD 制造商全稱:Analog Devices 功能描述:Single Supply, Rail-to-Rail Low Power FET-Input Op Amp |
| AD822ARM | 制造商:Analog Devices 功能描述:OP AMP DUAL GP R-R O/P 18V/36V 8MSOP - Tape and Reel |
| AD822ARM-R2 | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R O/P 制造商:Analog Devices 功能描述:IC OP-AMP DUAL SINGLE SUPPLY |
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