參數(shù)資料
型號: 935210150512
廠商: NXP SEMICONDUCTORS
元件分類: 光電元器件
英文描述: 1 CHANNEL READ WRITE AMPLIFIER CIRCUIT, PDSO24
封裝: 7.50 MM, PLASTIC, SOT-137-1, SOP-24
文件頁數(shù): 4/26頁
文件大?。?/td> 203K
代理商: 935210150512
1998 Mar 17
12
Philips Semiconductors
Preliminary specication
QIC read-write amplier
TZA1000
Table 14 Write mode select; note 1
Note
1. Control bits W0 to W6 make up a 7-bit number between 0 and 127. Write current is
(Rref = 430 ).
Table 15 Sense current range select; note 1
Note
1. Control bits S0 to S6 make up a 7-bit number between 0 and 127. Sense current is
when SDB = 0
and
when SDB = 1 (Rref = 430 ).
Status
A status byte, located at address FF, contains the following status bits:
Table 16 Status byte settings
Notes
1. Actual gain. Allows the gain to be determined while the AGC is on.
2. This bit can be used for microcontroller gain control, with the AGC off (see Table 17).
3. Power failure detected on the +5 V supply (VDD1).
4. Write unsafe detected: head open or short circuited.
5. Power failure detected on the +12 V supply (VDD3).
Table 17 Sense current range select.
WDM
EXPECTED INPUT SIGNAL
FUNCTION
0
WDI
on
1
WD
bypassed
SDB
CURRENT
0
0 to 15 mA
1
0 to 30 mA
ADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
FF
AG3(1)
AG2(1)
AG1(1)
AG0(1)
DN(2)
PF5(3)
WUS(4)
PF12(5)
DN
GAIN
0
can be increased
1
can be decreased
125
W
1
+
()
×
128
-------------------------------------- mA
15
S
1
+
()
×
128
--------------------------------- mA
30
S
1
+
()
×
128
--------------------------------- mA
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