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PDF 32R2214RX Data sheet ( Hoja de datos )
| Número de pieza | 32R2214RX | |
| Descripción | 4-Channel Thin Film Read/Write Device | |
| Fabricantes | ETC | |
| Logotipo |  |
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SSI 32R2214RX
+5V, 4-Channel Thin Film
Read/Write Device
Prototype
DESCRIPTION
The SSI 32R2214RX is a BiCMOS monolithic integrated
circuit designed for use with two-terminal recording
heads. It provides a low noise read amplifier, write
current control, and data protection circuitry for up to
four channels. The SSI 32R2214RX has an internal
900Ω damping resistor. The damping resistor is
switched in during write mode and switched out during
read mode. Power supply fault protection is provided
by disabling the write current generator during power
sequencing. System write to read recovery time is
significantly improved by making the read channel
outputs high impedance. Two guard pins are provided
for maximum supply noise rejection. The device also
offers multiple channel “servo bank write” capability to
assist in servo writing operations. The SSI 32R2214RX
requires only a +5V power supply.
March 1995
FEATURES
• +5V ±10% supply
• Low power
- PD = 105 mW read mode (Nom)
- PD = 1.0 mW Idle (Max)
• High Performance:
- Read mode gain = 300 V/V
- Input noise = 0.50 nV/√Hz (Nom)
- Input capacitance = 7 pF (Nom)
- Write current range = 3-25 mA
- Nominal write current (20 mA) rise/fall time =
7.7 ns (Nom) (typical head)
- Head voltage swing = 7.8 Vpp (Nom)
• Servo bank-write capability
• Self switching damping resistance
• Write unsafe detection
(continued)
R/W
CS
RDX
RDY
WD
WDI
BLOCK DIAGRAM
VCC
GND
WUS
MODE
SELECT
WRITE
UNSAFE
DETECTOR
REFERENCE
VOLTAGE
READ
BUFFER
SQ
WDFF
TQ
READ
PREAMPS
AND WRITE
CURRENT
SWITCHES
(X6)
HS0
HS1
HS2
VOLTAGE
FAULT
DETECTOR
WRITE
CURRENT
SOURCE
WUS/S WC
H0X
H0Y
H1X
H1Y
H2X
H2Y
H3X
H3Y
H4X
H4Y
H5X
H5Y
03/17/95 - rev
1
PIN DIAGRAM
N/C
GUARD
H0X
H0Y
H1X
H1Y
H2X
H2Y
H3X
H3Y
GUARD
N/C
1 24
2 23
3 22
4 21
5 20
6 32R2214RX19
7 4 18
Channels
8 17
9 16
10 15
11 14
12 13
GND
CS
R/W
WC
RDY
RDX
HS0
HS1
VCC
WD
WD
WUS
24-Lead, SOL
CAUTION: Use handling procedures necessary
for a static sensitive component.
Free Datasheet http://www.datasheet4u.com/
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet 32R2214RX.PDF ] | |
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