UAA2077B, UAA2077BM, UAA2077C Selling Leads, Datasheet
MFG:2862 Package Cooled:PHILIPS D/C:06+
UAA2077B, UAA2077BM, UAA2077C Datasheet download
Part Number: UAA2077B
MFG: 2862
Package Cooled: PHILIPS
D/C: 06+
UAA2077B, UAA2077BM, UAA2077C
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Info of UAA2077B
Info of UAA2077BM
Info of UAA2077C
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About UAA2077BM
PDF/DataSheet Download
Datasheet: UAA2077BM
File Size: 144363 KB
Manufacturer: PHILIPS [Philips Semiconductors]
Download : Click here to Download
About UAA2077BM
PDF/DataSheet Download
Datasheet: UAA2077BM
File Size: 144363 KB
Manufacturer: PHILIPS [Philips Semiconductors]
Download : Click here to Download
About UAA2077CM
PDF/DataSheet Download
Datasheet: UAA2077CM
File Size: 132769 KB
Manufacturer: PHILIPS [Philips Semiconductors]
Download : Click here to Download
UAA2077BM General Description
UAA2077BM contains both a receiver front-end and a high frequency transmit mixer intended to be used in mobile telephones. Designed in an advanced BiCMOS process it combines high performance with low power consumption and a high degree of integration, thus reducing external component costs and total front-end size.
The main advantage of the UAA2077BM is its ability to provide over 25 dB of image rejection. Consequently, the image filter between the LNA and the mixer is suppressed.
Image rejection is achieved in the internal architecture by two RF mixers in quadrature and two all-pass filters in I and Q IF channels that phase shift the IF by 45° and 135° respectively. The two phase shifted IFs are recombined and buffered to furnish the IF output signal.
For instance, signals presented at the RF input at the LO + IF frequency are rejected through this signal processing while signals at the LO - IF frequency can form the IF signal. An internal switch enables the upper or lower image frequency to be rejected.
The receiver section consists of a low-noise amplifier that drives a quadrature mixer pair. The IF amplifier has on-chip 45° and 135° phase shifting and a combining network for image rejection. The IF driver has differential open-collector type outputs.
The LO part consists of an internal all-pass type phase shifter to provide quadrature LO signals to the receive mixers. The centre frequency of the phase shifter is adjustable for maximum image rejection in a given band.
The all-pass filters outputs are buffered before being fed to the receive mixers.The transmit section consists of a low-noise amplifier and a down-conversion mixer. In the transmit mode an internal LO buffer is used to drive the transmit IF down-conversion mixer.
All RF and IF inputs or outputs are balanced.Pins RXON, TXON and SXON enable a selection to be made of whether to reject the upper or lower image frequency and control of the different power-down modes.Special care has been taken for fast power-up switching.
UAA2077BM Maximum Ratings
In accordance with the Absolute Maximum Rating System (IEC 134).
|
PARAMETER |
SYMBOL |
MIN. |
MAX. |
UNIT |
| supply voltage |
VCC |
- |
9.0 |
V |
| difference in ground supply voltage applied between LOGND and LNAGND |
GND |
- |
0.6 |
V |
| maximum power input |
Pi(max) |
- |
+20 |
dBm |
| maximum operating junction temperature |
Tj(max) |
- |
+150 |
|
| maximum power dissipation in quiet air |
Tdi(max) |
- |
250 |
mW |
| storage temperature |
Tstg |
-65 |
+150 |
mA |
UAA2077BM Features
· Low-noise, wide dynamic range amplifier
· Very low noise figure
· Dual balanced mixer for over 25 dB on-chip image rejection
· IF I/Q combiner at 188 MHz
· On-chip quadrature network
· Down-conversion mixer for closed-loop transmitters
· Independent TX/RX fast ON/OFF power-down modes
· Very small outline packaging
· Very small application (no image filter).
· Very low noise figure
· Dual balanced mixer for over 25 dB on-chip image rejection
· IF I/Q combiner at 188 MHz
· On-chip quadrature network
· Down-conversion mixer for closed-loop transmitters
· Independent TX/RX fast ON/OFF power-down modes
· Very small outline packaging
· Very small application (no image filter).
UAA2077BM Typical Application
· 1800 MHz front-end for DCS1800 hand-portable equipment
· Compact digital mobile communication equipment
· TDMA receivers e.g. PCS and RF-LANS.
· Compact digital mobile communication equipment
· TDMA receivers e.g. PCS and RF-LANS.
UAA2077BM Connection Diagram
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