ATR4251_09 Datasheet, PDF (14/21 Pages) ATMEL Corporation – Low-noise, High-dynamic-range Antenna Amplifier IC

10. Internal Circuitry
Table 10-1. Equivalent Pin Circuits (ESD Protection Circuits Not Shown)
PIN SSO20 PIN QFN24
Symbol
Equivalent Circuit
1
22
2
23
19
20
FMGAIN
FMIN
FMOUT
19
1
2
3
24
VREF1
4, 13, 20
2, 13, 21
GND
5
3
6
4
AGC1
AGC2
3
VS
5
1, 7, 12, 18
NC
7
5
VREF2
7
14 ATR4251
4913J–AUDR–10/09