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参数资料
| 型号： | W671320P |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 模拟传输电路 |
| 英文描述： | TELECOM-SLIC, PQCC28 |
| 封装： | PLASTIC, LCC-28 |
| 文件页数： | 47/48页 |
| 文件大小： | 1344K |
| 代理商： | W671320P |
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W671300 SERIES
6. PIN DESCRIPTION
Pin
Name
Pin #
PLCC
Pin #
QFN
Functionality
TIP
1
29
Tip power amplifier output.
BGN
D
2
30
Battery Ground - To be connected to zero potential. All loop current and
longitudinal current flow from this ground. Internally separate from AGND. This
ground must be connected to the same potential as AGND.
VBL
3
31
Low Battery supply connection.
VBH
4
32
High Battery supply connection for the most negative battery.
SW+
5
1
Uncommitted Switch positive terminal.
SW-
6
2
Uncommitted Switch negative terminal.
SWC
7
3
Switch Control Input. This TTL compatible input controls the uncommitted switch,
with a logic “0” enabling the switch and logic “1” disabling the switch.
F2
8
4
Mode Control Input - MSB.
Pins F2-F0 TTL inputs control the various modes of operation of the device.
F1
9
5
Mode Control Input. (see F2 above)
F0
10
6
Mode Control Input. (see F2 above)
E0
11
7
Detector Output Selection Input. TTL input controling the multiplexing of the
Switch Hook Detector (E0=1) and Ground Key Detector (E0=0) comparator
outputs to the DET output based upon the state at the F2-F0 pins (see the
Device Operating Modes table in section 7).
DET
12
9
Detector Output - This TTL output provides on-hook/off-hook status of the loop
based upon the selected operating mode (F2-F0 pins). The detected output will
either be Switch Hook, Ground Key or Ring Trip. DET will be latched low
following a ring trip and unlatched by changing logic state.
ALM
13
10
Thermal Shutdown Alarm. Signals internal die temperature has exceeded safe
operating temperature (approximately 175
oC) and the device has been powered
down automatically.
AGN
D
14
11
Analog Ground Reference. This pin should be externally connected to BGND.
BSEL
15
12
Selects between high battery (BSEL=”1”) and low battery (BSEL=”0”).
TL
16
13
Transient Current Limit programming resistor
POL
17
14
Polarity Reversal Time programming capacitor
VRS
18
15
Ringing Signal Input - Analog input for driving 2-wire interface while in Ring
Mode.
AUX
19
17
Auxilliary Input – float if not used.
VTX
20
18
Transmit Output Voltage – Output of impedance matching amplifier, AC couples
to CODEC.
VFB
21
19
Feedback voltage for impedance matching. This voltage is scaled to accomplish
impedance matching. The CFB capacitor connects between this pin and the -IN
pin. It needs to be non-polarized for proper device operation in the Reverse
Active mode. Ceramic surface mount capacitors (1206 body style) are available
with a 6.3V voltage rating. These can be used for CFB since it is internally limited
to approximately ±3V.
-IN
22
20
Impedance matching amplifier summing node. Resistor RIN needs to be as close
to the -IN pin as possible to minimize parasitic capacitance.
- 8 -
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