參數資料
型號: ADR130AUJZ-R2
廠商: ANALOG DEVICES INC
元件分類: 基準電壓源/電流源
英文描述: Precision Series Sub-Band Gap Voltage Reference
中文描述: 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1 V, PDSO6
封裝: LEAD FREE, MO-193AA, TSOT-6
文件頁數: 14/16頁
文件大?。?/td> 788K
代理商: ADR130AUJZ-R2
ADR130
NEGATIVE PRECISION REFERENCE WITHOUT
PRECISION RESISTORS
A negative reference is easily generated by adding an op amp,
A1, and is configured as shown in Figure 36. V
OUT
is at virtual
ground and, therefore, the negative reference can be taken
directly from the output of the op amp. The op amp must be
dual-supply, low offset, and rail-to-rail if the negative supply
voltage is close to the reference output.
Rev. 0 | Page 14 of 16
1
2
3
6
5
4
NC
GND
V
IN
V
OUT
SET
NC
0
U2
ADR130
+V
DD
–V
REF
–V
DD
0.1μF
V+
V–
A1
OP291
1k
Figure 36. Negative Reference, V
REF
= 0.5 V
PRECISION CURRENT SOURCE
In low power applications, the need can arise for a precision
current source that can operate on low supply voltages. The
ADR130 can be configured as a precision current source (see
Figure 37). The circuit configuration shown is a floating current
source with a grounded load. The reference output voltage is
bootstrapped across R
SET
, which sets the output current into the
load. With this configuration, circuit precision is maintained for
load currents ranging from the reference supply current,
typically 85 μA, to approximately 4 mA.
1
2
3
6
5
4
NC
GND
V
IN
V
OUT
SET
NC
ADR130
0
R
SET
V
IN
P1
R
L
Figure 37. ADR130 as a Precision Current Source
相關PDF資料
PDF描述
ADR130AUJZ-REEL7 Precision Series Sub-Band Gap Voltage Reference
ADR130BUJZ-R2 Precision Series Sub-Band Gap Voltage Reference
ADR130BUJZ-REEL7 Precision Series Sub-Band Gap Voltage Reference
ADR1500 1.2875 V Micropower, Shunt Voltage Reference
ADR1500BKSZ-REEL 1.2875 V Micropower, Shunt Voltage Reference
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