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參數(shù)資料
| 型號： | VES1848 |
| 英文描述： | MODEM CIRCUIT|MODEM|CMOS|QFP|208PIN|PLASTIC |
| 中文描述： | 調(diào)制解調(diào)器電路|調(diào)制解調(diào)器|的CMOS | QFP封裝| 208PIN |塑料 |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 223K |
| 代理商： | VES1848 |
VES 1848 rev 1.2 / July 99 / p 15
SYMBOL
Iana
PIN NUMBER
154
TYPE
O
DESCRIPTION
Analog output current for channel I. Iana is the output of the DAC
and can directly drive a single or double terminated 75
transmission line.
When parameter BB_IF=0 (AD.2) : I base band analog output.
When parameter BB_IF=1 (AD.2) : modulated IF analog output.
Analog output current for channel Q. Qana is the output of the DAC
and can directly drive a single or double terminated 75
transmission line.
When parameter BB_IF=0 (AD.2) : Q base band analog output.
When parameter BB_IF=1 (AD.2) : programmable sinewave
(B0.[7-0], B1.[7-0]) analog output.
An external .1
μ
F bypass capacitor must be connected between this
pin and analog VDD to stabilize the internal current reference node
of the D/A converter of channel I.
An external .1
μ
F bypass capacitor must be connected between this
pin and analog VDD to stabilize the internal current reference node
of the D/A converter of channel Q.
An external resistor of value 147
should be connected between
this pin and ground to provide good accurate bias currents for the
analog circuits on the DAC of channel I.
An external resistor of value 147
should be connected between
this pin and ground to provide good accurate bias currents for the
analog circuits on the DAC of channel Q.
Voltage reference of 1.235V for both DAC.
DAC analog core power supply (3.3V)
DAC analog core ground.
Ground for a P+ guard ring that surrounds the DAC (must be a clean
Vss)
Power supply for an N- guard ring that surrounds the DAC (must be
a clean 3.3V)
DAC digital core power supply (3.3V)
DAC digital core ground.
DAC analog core ground.
DAC analog core power supply (3.3V)
Ground for a P+ guard ring that surrounds the DAC (must be a clean
Vss).
Power supply for an N- guard ring that surrounds the DAC (must be
a clean 3.3V).
Qana
164
O
CompI
153
I
CompQ
163
I
IrefI
152
I
IrefQ
162
I
VrefIQ
AVDDI
AVSSI
VS0I
155
151
156
157
I
I
I
I
VD0I
158
I
VD1IQ
VS1IQ
AVSSQ
AVDDQ
VS0Q
159
160
161
165
166
I
I
I
I
I
VD0Q
167
I
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| VES-220M0JTR-0405 | 功能描述:鋁質(zhì)電解電容器-SMD 6.3 Volts 22uF 20% 4x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1ATR-0505 | 功能描述:鋁質(zhì)電解電容器-SMD 10 Volts 22uF 20% 5x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1CTR-0505 | 功能描述:鋁質(zhì)電解電容器-SMD 16 Volts 22uF 20% 5x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1ETR-0605 | 功能描述:鋁質(zhì)電解電容器-SMD 25 Volts 22uF 20% 6.3x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
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