- 您現在的位置：買賣IC網 > PDF目錄373952 > AD8620BR (ANALOG DEVICES INC) Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier PDF資料下載
參數資料
| 型號： | AD8620BR |
| 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： | DUAL OP-AMP, 300 uV OFFSET-MAX, 25 MHz BAND WIDTH, PDSO8 |
| 封裝： | MS-012AA, SOIC-8 |
| 文件頁數： | 14/20頁 |
| 文件大小： | 414K |
| 代理商： | AD8620BR |
REV. D
–14–
AD8610/AD8620
supplies of
±
5 V. Figures 24 and 25 compare the load current
versus output voltage of AD8610/AD8620 and OPA627.
LOAD CURRENT – A
10
0.1
0.00001
1
D
1
0.0001
0.001
0.01
0.1
V
EE
V
CC
Figure 24. AD8610 Dropout from
±
13 V vs. Load Current
LOAD CURRENT – A
10
0.1
0.00001
1
D
1
0.0001
0.001
0.01
0.1
V
EE
V
CC
Figure 25. OPA627 Dropout from
±
15 V vs. Load Current
Although operating conditions imposed on the AD8610 (
±
13 V)
are less favorable than the OPA627 (
±
15 V), it can be seen that the
AD8610 has much better drive capability (lower headroom to the
supply) for a given load current.
Operating with Supplies Greater than
±
13 V
The AD8610 maximum operating voltage is specified at
±
13 V.
When
±
13 V is not readily available, an inexpensive LDO can
provide
±
12 V from a nominal
±
15 V supply.
Input Offset Voltage Adjustment
Offset of AD8610 is very small and normally does not require
additional offset adjustment. However, the offset adjust pins can
be used as shown in Figure 26 to further reduce the dc offset. By
using resistors in the range of 50 k
, offset trim range is
±
3.3 mV.
R1
2
3
7
5
+V
S
V
OUT
4
6
–V
S
1
AD8610
Figure 26. Offset Voltage Nulling Circuit
Programmable Gain Amplifier (PGA)
The combination of low noise, low input bias current, low input
offset voltage, and low temperature drift make the AD8610 a
perfect solution for programmable gain amplifiers. PGAs are often
used immediately after sensors to increase the dynamic
range of
the measurement circuit. Historically, the large ON resistance
of
switches, combined with the large I
B
currents of amplifiers,
created
a large dc offset in PGAs. Recent and improved monolithic
switches
and amplifiers completely remove these problems. A PGA
discrete circuit is shown in Figure 27. In Figure 27, when the 10 pA
bias current of the AD8610 is dropped across the (<5
) R
ON
of
the switch, it results in a negligible offset error.
When high precision resistors are used, as in the circuit of Figure 27,
the error introduced by the PGA is within the 1/2 LSB requirement
for a 16-bit system.
Y0
Y1
Y2
Y3
G
A
B
5
IN1
S1
D1
10k
10k
1k
–5V
+5V
IN2
S2
D2
IN3
S3
D3
IN4
S4
D4
ADG452
3
2
14
15
11
10
6
7
V
L
V
DD
13
12
1
16
9
8
74HC139
V
SS
4
GND
5
V
OUT
1k
100
11
5pF
100
V
IN
G = 1
G = 10
G = 100
G = 1000
+5V
+5V
AD8610
U10
A0
A1
–5V
Figure 27. High Precision PGA
1. Room temperature error calculation due to R
ON
and I
B
:
Total Offset
Total Offset
Total Offset
2. Full temperature error calculation due to R
ON
and I
B
:
V
I
R
=
=
=
Offset
Offset Trimmed
5
pV
μ
V
V
OS
B
ON
AD8610
AD8610
μ
OS
OS
=
×
=
×
=
+
+
+
2
5
10
5
10
pA
pV
(
(
)
_
)
V
V
250
V
I
R
OS
B
3 75
ON
(
C)
15
(
.
C)
(
C)
pA
nV
@
@
@
85
×
85
85
°
=
°
×
°
=
=
3. Temperature coefficient of switch and AD8610/AD8620
combined is essentially the same as the T
C
V
OS
of the AD8610:
0 5
V/ C
0 5
V
V
T total
T total
(
V
.
T
V
T I
(
.
R
OS
OS
OS
B
ON
OS
/
/
(
)
)
/
(
)
nV/ C
/
)
.
V/ C
=
=
+
×
AD8610
0 06
μ
μ
相關PDF資料 |
PDF描述 |
|---|---|
| AD8620 | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| AD8620AR | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| AD8620AR-REEL | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| AD8620AR-REEL7 | Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifier |
| AD8627 | Precision Low Power Single-Supply JFET Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8620BR-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) |
| AD8620BR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Dual GP |
| AD8620BRZ | 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 |
| AD8620BRZ-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) |
| AD8620BRZ-REEL7 | 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) |
發布緊急采購，3分鐘左右您將得到回復。