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參數(shù)資料
| 型號： | AD824ARZ-14-3V |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP JFET R-R 2MHZ LP 14SOIC |
| 標(biāo)準(zhǔn)包裝： | 56 |
| 放大器類型： | J-FET |
| 電路數(shù)： | 4 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 2 V/µs |
| 增益帶寬積： | 2MHz |
| -3db帶寬： | 2MHz |
| 電流 - 輸入偏壓： | 4pA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 560µA |
| 電流 - 輸出 / 通道： | 12mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 30 V，±1.5 V ~ 15 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOIC |
| 包裝： | 管件 |
REV. C
AD824
–12–
APPLICATIONS
Single Supply Voltage-to-Frequency Converter
The circuit shown in Figure 4 uses the AD824 to drive a low
power timer, which produces a stable pulse of width t1. The
positive going output pulse is integrated by R1-C1 and used as
one input to the AD824, which is connected as a differential
integrator. The other input (nonloading) is the unknown voltage,
VIN. The AD824 output drives the timer trigger input, closing
the overall feedback loop.
1/4
AD824
C5
0.1 F
NOTES
fOUT = VIN/(VREF
t1), t1 = 1.1 R3 C6
= 25kHz fS AS SHOWN.
*
= 1% METAL FILM, <50ppm/ C TC
**
= 10%, 20T FILM, <100ppm/ C TC
t1 = 33 s FOR fOUT = 20kHz @ VIN = 2.0V
U4
REF02
2
6
5
4
3
VREF = 5V
RSCALE**
10k
CMOS
74HCO4
4
U3B
U3A
32
1
C3
0.1 F
OUT2
OUT1
10V
R2
499k , 1%
U1
0.01 F, 2%
C1
R3*
116k
2
6
5
3
7
1
48
U2
CMOS 555
TR
THR
DIS
CV
OUT
RV+
GND
C4
0.1 F
C6
390pF
5%
(NPO)
C2
0.01 F, 2%
R1
499k , 1%
0V TO 2.5V
FULL SCALE
Figure 4. Single Supply Voltage-to-Frequency Converter
Typical AD824 bias currents of 2 pA allow megaohm-range
source impedances with negligible dc errors. Linearity errors on
the order of 0.01% full scale can be achieved with this circuit.
This performance is obtained with a 5 V single supply, which
delivers less than 3 mA to the entire circuit.
Single Supply Programmable Gain Instrumentation Amplifier
The AD824 can be configured as a single supply instrumenta-
tion amplifier that is able to operate from single supplies down
to 5 V or dual supplies up to
±15 V. AD824 FET inputs’ 2 pA
bias currents 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 I. AD824 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 (VS = 0 V, 3 V)
2
ms
5 V (VS =
±5 V)
5
ms
Noise @ f = 1 kHz, G = 10
270 nV/
÷Hz
270 nV/
÷Hz
G = 100
2.2
mV/÷Hz
2.2
mV/÷Hz
10
0%
100
90
1V
5s
Figure 5a. Pulse Response of In Amp to a 500 mV p-p
Input Signal; VS = 5 V, 0 V; Gain = 10
VREF
VOUT
VIN1
VIN2
0.1 F
+VS
R1
90k
R2
9k
R3
1k
R4
1k
R5
9k
R6
90k
G = 10
G = 100
G = 10
G = 100
OHMTEK
PART # 1043
1/4
AD824
2
1
3
6
7
5
RP
1k
RP
1k
11
(G = 10) V OUT = (VIN1 – VIN2) (1+
) + V REF
R6
R4 + R5
(G = 100) V OUT = (VIN1 – VIN2) (1+
) + V REF
R5 + R6
R4
FOR R1 = R6, R2 = R5 AND R3 = R4
1/4
AD824
Figure 5b. A Single Supply Programmable
Instrumentation Amplifier
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| AD824ARZ-14-3V-RL | 功能描述:IC OPAMP JFET R-R 2MHZ LP 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°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 |
| AD824ARZ-14-REEL | 功能描述:IC OPAMP JFET R-R 2MHZ LP 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°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 |
| AD824ARZ-14-REEL7 | 功能描述:IC OPAMP JFET R-R 2MHZ LP 14SOIC RoHS:是 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 |
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