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參數(shù)資料
| 型號： | AD608AR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | CAP CERAMIC 120PF 50V NP0 0805 |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SOIC-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 196K |
| 代理商： | AD608AR |
a
LowPower Mxer/Limter/RSSI
3 V Receiver IF Subsystem
AD608
Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
Mixer
–15 dBm 1 dB Compression Point
–5 dBm IP3
24 dB Conversion Gain
>500 MHz Input Bandwidth
Logarithmic/Limiting Amplifier
80 dB RSSI Range
6
3
8
Phase Stability over 80 dB Range
Low Power
21 mW at 3 V Power Consumption
CMOS-Compatible Power-Down to 300
m
W typ
200 ns Enable/Disable Time
APPLICATIONS
PHS, GSM, TDMA, FM, or PM Receivers
Battery-Powered Instrumentation
Base Station RSSI Measurement
T he RF and LO bandwidths both exceed 500 MHz. In a typical
IF application, the AD608 will accept the output of a 240 MHz
SAW filter and downconvert it to a nominal 10.7 MHz IF with
a conversion gain of 24 dB (Z
IF
= 165
). T he AD608’s loga-
rithmic/limiting amplifier section handles any IF from LF to as
high as 30 MHz.
T he mixer is a doubly-balanced “Gilbert-Cell” type and oper-
ates linearly for RF inputs spanning –95 dBm to –15 dBm. It
has a nominal –5 dBm third-order intercept. An onboard LO
preamplifier requires only –16 dBm of LO drive. T he mixer’s
current output drives a reverse-terminated, industry-standard
10.7 MHz 330
filter.
T he nominal logarithmic scaling is such that the output is
+0.2 V for a sinusoidal input to the IF amplifier of –75 dBm
and +1.8 V at an input of +5 dBm; over this range the logarith-
mic conformance is typically
±
1 dB. T he logarithmic slope is
proportional to the supply voltage. A feedback loop automati-
cally nulls the input offset of the first stage down to the sub-
microvolt level.
T he AD608’s limiter output provides a hard-limited signal out-
put at 400 mV p-p. T he voltage gain of the limiting amplifier to
this output is more than 100 dB. T ransition times are 11 ns and
the phase is stable to within
±
3
°
at 10.7 MHz for signals from
–75 dBm to +5 dBm.
T he AD608 is enabled by a CMOS logic-level voltage input,
with a response time of 200 ns. When disabled, the standby
power is reduced to 300
μ
W within 400 ns.
T he AD608 is specified for the industrial temperature range of
–25
°
C to +85
°
C for 2.7 V to 5.5 V supplies and –40
°
C to +85
°
C
for 4.5 V to 5.5 V supplies. It comes in a 16-pin plastic SOIC.
GE NE RAL DE SCRIPT ION
T he AD608 provides both a low power, low distortion, low
noise mixer and a complete, monolithic logarithmic/limiting
amplifier using a “successive-detection” technique. It provides
both a high speed RSSI (Received Signal Strength Indicator)
output with 80 dB dynamic range and a hard-limited output.
T he RSSI output is from a two-pole post-demodulation low-
pass filter and provides a loadable output voltage of +0.2 V to
+1.8 V. T he AD608 operates from a single 2.7 V to 5.5 V sup-
ply at a typical power level of 21 mW at 3 V.
FUNCT IONAL BLOCK DIAGRAM
24dB MIXER GAIN
110dB LIMITER GAIN
90dB RSSI
BIAS
MXOP
MIXER
BPF
DRIVER
VMID
LO
PREAMP
AD608
RFHI
RFLO
IF INPUT
–75dBm TO
+15dBm
2
IFHI
IFLO
LMOP
VPS2
RSSI
FDBK
COM3
FINAL
LIMITER
100nF
10nF
330
±
50μA
330
MID-SUPPLY
IF BIAS
5
7
8
10
9
13
14
12
11
2
4
16
LIMITER
OUTPUT
400mVp-p
PRUP
RF INPUT
–95 TO
–15dBm
1
VPS1 COM1
COM2
LOHI
RSSI OUTPUT
20mV/dB
0.2V TO 1.8V
3dB NOMINAL
INSERTION LOSS
+2.7V TO 5.5V
5-STAGE IF AMPLIFIER
(16dB PER STAGE)
7 FULL-WAVE
RECTIFIER CELLS
≈
2MHz
LPF
+2.7V TO
5.5V
LO INPUT
–16dBm
CMOS LOGIC
INPUT
±
6mA MAX OUTPUT
(
±
890mV INTO 165
)
100
18nF
1
–15dBm =
±
56mV MAX FOR LINEAR OPERATION
2
39.76μV RMS TO 397.6mV RMS FOR
±
1dB RSSI
ACCURACY
15
1
3
6
NOTES:
10.7MHz
BANDPASS
FILTER
≈
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD608AR-REEL | 功能描述:IC MIXER/LIMITER 3V IF 16-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD608 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:12-QFN-EP（3x3） |
| AD608AR-REEL7 | 功能描述:INTEGRATED CIRCUIT 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):最後搶購 RF 類型:FM，GSM，PM，PHS，F(xiàn)M 頻率:500MHz 混頻器數(shù):1 增益:24dB 噪聲系數(shù):16dB 輔助屬性:帶放大器 電流 - 電源:7.3mA 電壓 - 電源:2.7 V ~ 5.5 V 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:16-SOIC 標(biāo)準(zhǔn)包裝:1 |
| AD608ARZ | 功能描述:IC MIXER/LIMITER IF 3V 16-SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD608 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:12-QFN-EP（3x3） |
| AD608ARZ | 制造商:Analog Devices 功能描述:IC MIXER/LIMITER ((NW)) |
| AD608ARZ-RL | 功能描述:IC MIXER/LIMITER IF 3V 16SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD608 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:12-QFN-EP（3x3） |
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