參數(shù)資料
型號(hào): ZTL431AE5TA
廠(chǎng)商: ZETEX PLC
元件分類(lèi): 基準(zhǔn)電壓源/電流源
英文描述: Cost effective adjustable precision shunt regulator
中文描述: 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO5
封裝: SOT-23, 5 PIN
文件頁(yè)數(shù): 7/12頁(yè)
文件大?。?/td> 416K
代理商: ZTL431AE5TA
ZTL431, ZTL432
Issue 8 - April 2007
Zetex Semiconductors plc 2007
7
www.zetex.com
DC test circuits
Notes
Deviation of reference input voltage, Vdev, is
defined as the maximum variation of the
reference input voltage over the full
temperature range.
The average temperature coefficient of the
reference input voltage, V
ref
is defined as:
The dynamic output impedance, R
z
, is
defined as:
Δ
V
z
Δ
I
z
When the device is programmed with two
external resistors, R1 and R2, (fig 2), the
dynamic output impedance of the overall
circuit, R'
z
, is defined as:
R2
Stability boundary
The ZTL431 and ZTL432 are stable with a
range of capacitive loads. A zone of instability
exists as demonstrated in the typical
characteristic graph on page 5. The graph
shows typical conditions. To ensure reliable
stability a capacitor of 4.7nF or greater is
recommended between anode and cathode.
Figure 1
Test circuit for
V
KA
= V
REF
Figure 2
Test circuit for
V
KA
> V
REF
Figure 3
Test circuit for
off state current
I
KA
I
KA
I
KA(OFF)
I
L
I
L
V
KA
V
KA
V
KA
V
REF
V
REF
I
REF
I
REF
V
REF
ppm
°
C
(
)
V
V
REF
T1
T2
(
)
------------------------------------------------
=
R
z
---------
=
R
'
z
R
z
1
-------
+
=
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