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參數資料
| 型號： | AD8620 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| 中文描述： | 精密，非常低噪聲，低輸入偏置電流，高帶寬結型場效應管運算放大器 |
| 文件頁數： | 9/20頁 |
| 文件大小： | 414K |
| 代理商： | AD8620 |
REV. D
AD8610/AD8620
–9–
TIME – 400ns/DIV
V
V
S
= 13V
V
IN
p-p = 20V
A
V
= 1
R
L
= 2k
SR = 55V/ s
C
L
= 20pF
TPC 37. +SR at G = –1
TIME – 400ns/DIV
V
V
S
= 13V
V
IN
p-p = 20V
A
V
= 1
R
L
= 2k
SR = 50V/ s
C
L
= 20pF
TPC 38. –SR at G = –1
+
–
V
IN
20V p-p
0
3
2
U1
+13V
–13V
2k
R4
2k
0
0
2k
R1
20k
R2
0
0
U2
5
6
7
V+
V–
V–
V+
CS(dB) = 20 log (V
OUT
/10 V
IN
)
Figure 1. Channel Separation Test Circuit
FUNCTIONAL DESCRIPTION
The AD8610/AD8620 is manufactured on Analog Devices, Inc.’s
proprietary XFCB (eXtra Fast Complementary Bipolar) process.
XFCB is fully dielectrically isolated (DI) and used in conjunc-
tion with N-channel JFET technology and trimmable thin-film
resistors to create the world’s most precise JFET input amplifier.
Dielectrically isolated NPN and PNP transistors fabricated on
XFCB have F
T
greater than 3 GHz. Low T
C
thin film resistors
enable very accurate offset voltage and offset voltage tempco
trimming. These process breakthroughs allowed Analog Devices’
world class IC designers to create an amplifier with faster slew
rate and more than 50% higher bandwidth at half of the current
consumed by its closest competition. The AD8610 is uncondi-
tionally stable in all gains, even with capacitive loads well in
excess of 1 nF. The AD8610B achieves less than 100
μ
V of offset
and 1
μ
V/
°
C of offset drift, numbers usually associated with very
high precision bipolar input amplifiers. The AD8610 is offered in
the tiny 8-lead MSOP as well as narrow 8-lead SOIC surface-
mount packages and is fully specified with supply voltages from
±
5 V to
±
13 V. The very wide specified temperature range, up to
125
°
C, guarantees superior operation in systems with little or no
active cooling.
The unique input architecture of the AD8610 features extremely
low input bias currents and very low input offset voltage. Low
power consumption minimizes the die temperature and maintains
the very low input bias current. Unlike many competitive JFET
amplifiers, the AD8610/AD8620 input bias currents are low even
at elevated temperatures. Typical bias currents are less than 200pA
at 85
°
C. The gate current of a JFET doubles every 10
°
C resulting
in a similar increase in input bias current over temperature.
Special care should be given to the PC board layout to minimize
leakage currents between PCB traces. Improper layout and
board handling generates leakage current that exceeds the bias
current of the AD8610/AD8620.
FREQUENCY – kHz
0
350
50
100
150
200
250
300
138
136
120
128
126
124
122
132
130
134
C
Figure 2. AD8620 Channel Separation Graph
Power Consumption
A major advantage of the AD8610/AD8620 in new designs is
the saving of power. Lower power consumption of the AD8610
makes it much
more attractive for portable instrumentation and
for high-density
systems, simplifying thermal management, and
reducing power supply performance requirements. Compare the
power
consumption
of the AD8610/AD8620 versus the OPA627
in Figure 3.
TEMPERATURE – C
8
7
6
5
4
3
2
–75
125
–50
S
–25
0
25
50
75
100
OPA627
AD8610
Figure 3. Supply Current vs. Temperature
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8620AR | 功能描述:IC OPAMP JFET 25MHZ DUAL 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:J-FET 電路數:2 輸出類型:- 轉換速率: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） 供應商設備封裝:8-PDIP 包裝:管件 |
| AD8620AR-REEL | 功能描述:IC OPAMP JFET 25MHZ DUAL 8SOIC RoHS:否 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) |
| AD8620AR-REEL7 | 功能描述:IC OPAMP JFET 25MHZ DUAL 8SOIC RoHS:否 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) |
| AD8620ARZ | 功能描述:IC OPAMP JFET 25MHZ DUAL 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數:4 輸出類型:- 轉換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD8620ARZ-REEL | 功能描述:IC OPAMP JFET 25MHZ DUAL 8SOIC 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) |
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