- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄372107 > SA638 (NXP SEMICONDUCTORS) IS-54 IF receiver PDF資料下載
參數(shù)資料
| 型號(hào)： | SA638 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | IS-54 IF receiver |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PDSO24 |
| 封裝： | PLASTIC, SOT-355, TSSOP-24 |
| 文件頁(yè)數(shù)： | 2/5頁(yè) |
| 文件大小： | 48K |
| 代理商： | SA638 |
Philips Semiconductors
Preliminary specification
SA638
IS-54 IF receiver
1995 Feb 16
2
PIN DESCRIPTIONS
Pin
No.
Mnemonic
Function
1
RF
IN(+)
RF
IN(–)
RF Input Plus:
Differential RF Plus input to mixer.
2
RF Input Minus:
Differential RF Minus input to mixer.
3
OSC
B
LO Oscillator Transistor Base:
LO generator (Pins 3 and 4) with internal buffer to drive mixer differentially. Can
also be driven externally.
4
OSC
E
LO Oscillator Transistor Emitter:
Pins 3 and 4 are used to form an oscillator with external components (tank,
varactor, etc.).
5
V
CC1
Supply Voltage 1:
Voltage supply for mixer and main bias.
6
RSSI/AGC
RSSI Out and AGC Input:
Dual use: RSSI output in AMPS mode (no internal opamp) and AGC input in QPSK
mode if needed. If no AGC, input will auto AGC to pre-defined fixed level for IQ outputs, in which case this pin
also serves as RSSI output.
7
PWRDWN
Power-Down:
Chip power-down input (CMOS compatible).
8
OSC
DEMOD
IF Oscillator Input (LO frequency x4):
Oscillator input x4 for I/Q demodulation is needed for internally
generating quad LOs by division.
9
ModeSW
Mode Switch:
Logic control signal to select between AMPS and QPSK modes of operation.
10
AUDIO/LPF
Audio Out and LPF Corner Frequency Control:
Dual Use: Audio output in the AMPS mode and LPF corner
frequency control in QPSK mode.
11
DEMOD1
Demod Auxiliary Pin:
Used to implement FM demodulation in AMPS mode.
12
Q
Baseband Q Ouptut:
Quadrature baseband output referenced to IQ
REF
.
Baseband I Output:
In-phase baseband output referenced to IQ
REF
.
Supply Voltage 2:
Voltage supply for IF amp and demodulator.
13
I
14
V
CC2
IQ
REF
GND2
15
I/Q Reference Voltage:
Reference voltage for baseband I/Q outputs.
16
Ground 2:
Ground common for IF amp and demodulator.
17
DEMOD2/Offsets
Demod Auxiliary Pin and I/Q Offset Control:
Dual Use: In AMPS mode serves for FM demodulator; in QPSK
mode serves as I/Q offset control.
18
IQ DEMOD
Input to the Demodulator:
IF input to demodulator from AGC IF amp output.
19
GND1
Ground 1:
Ground common for mixer and main bias.
20
IFAMP
OUT
IF Amplifier Output:
IF amplifier output.
21
V
CCMID
V
Midpoint Bypass:
The internally generated VCC midpoint bias needs to be externally bypassed with a
suitable capacitor.
22
IFAMP
IN
IFAMP
DC
MIX
OUT
Input to IF Amplifier
: Input to IF Amplifier from mixer through external filter.
23
Reference Input to IF Amp:
External bypassing for low frequency feedback of IF amp to null DC offsets.
24
Output from Mixer:
IF output from mixer to external BPF and IF amp.
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
CC
Single supply voltage
V
IN
Voltage applied to any other pin
T
STG
Storage temperature range
T
A
Operating ambient temperature range SA639
NOTE:
θ
JA
Thermal impedance (DH package) 117
°
C/W
PARAMETER
RATING
UNITS
V
V
°
C
°
C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA639 | Low voltage mixer FM IF system with filter amplifier and data switch |
| SA647 | Low-voltage digital IF receiver |
| SA647DH | Low-voltage digital IF receiver |
| SA7016 | 1.3GHz low voltage fractional-N synthesizer |
| SA7016DH | 1.3GHz low voltage fractional-N synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA639 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage mixer FM IF system with filter amplifier and data switch |
| SA6392 | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:4CHANNEL BTL DRIVER FOR CD PLAYERS |
| SA639DH | 制造商:MAJOR 功能描述: 制造商:NXP Semiconductors 功能描述:FM DEMODULATOR, 24 Pin, Plastic, TSSOP |
| SA639DH,512 | 功能描述:射頻混合器 LV MIX FM IF SYS W/FILT AMP&DS RoHS:否 制造商:NXP Semiconductors 頻率范圍: 轉(zhuǎn)換損失——最大: 工作電源電壓:6 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| SA639DH,518 | 功能描述:射頻混合器 LV MIX FM IF SYS W/FILT AMP&DS RoHS:否 制造商:NXP Semiconductors 頻率范圍: 轉(zhuǎn)換損失——最大: 工作電源電壓:6 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。