2.1.2
Digital wideband VGAs with high linearity & flexible current settings
NXP digital VGAs BGA7204 & BGA7210
These 6-bit digital VGAs offer high linearity (35 dBm @ 2.2-2.8 GHz) and high output power
(23 dBm @ 2.2-2.8 GHz) across a large bandwidth without external matching. Smart routing with no
connection crosses simplifies design and decreases footprint by 25%. The unique power-save mode
can effectively reduce the current consumption in TDD systems up to 45%. The BGA7210 adds flexible
current distribution across its two amplifiers, depending on the attenuation state, to save current.
Key features
`
Internally matched for 50 Ω
`
High maximum power gain
`
High output third-order intercept, IP3
O
`
Attenuation range of 31.5 dB, 0.5 dB step size (6 bit)
`
High output power, P
L(1dB)
`
Fast switching power-save mode (power down pin)
`
Digitally controlled current setting from 120 to 195 mA with
an optimum at 185mA (BGA7210 only)
`
Simple control interfaces
`
ESD protection on all pins (HBM 4 kV; CDM 2 kV)
`
HVQFN32 (5 x 5 x 0.85 mm)
Key benefits
`
Wideband operation supports platforms with multiple
frequency ranges
`
Smart lead routing produces simpler design, decreases
footprint by 25%
`
Power-save mode can reduce current consumption in
TDD systems up to 45%
`
Flexible current setting (BGA7210) saves power
`
Monolithic design enables high quality
Applications
`
GSM, W-CDMA, WiMAX, LTE base stations
`
Wireless point-to-point and repeaters
`
Cable modem termination systems
`
Temperature-compensation circuits
(also available OM7922 – BGA7204 CEK)
44
NXP Semiconductors RF Manual 16
th
edition
PHILIPS [ NXP SEMICONDUCTORS ]
