dual-band 3v power amplifier for gsm900/dcs1800 applications description the CXG1047FN dual band gaas pa is a 3-stage power amplifier that may be used for both gsm900 and dcs1800 applications. to achieve minimum die-size and package dimensions, it contains one amplifier chain with a single input and output. the pa has a single rf input for both the gsm900 and dcs1800 transmit signals. the amplifier can be configured for 2 separate inputs. power control is best achieved by variation of v dd 1/v dd 2 and v dd 3 drain voltages with an external transistor. a proposed power control circuit configuration is described. external pmos drain switch should be used to achieve low leakage. features single positive rail only typical output power of 35.5dbm at 900mhz and 33dbm at 1800mhz typical efficiency of 37% at 900mhz and 37% at 1800mhz small package size with integral heat-sink: 16-pin hsof (5.6 4.4 0.9mm) 3-stage amplifier chain simple pin diode circuitry is used to switch between 1800 and 900mhz matching circuits off mode insertion loss typically 27db at 900mhz (pin = +6dbm at v dd = 0v) typical transmit noise @20mhz offset ?9dbm/100khz applications dual-band handsets transmitting on the gsm900 or dcs1800 frequencies structure gaas j-fet mmic absolute maximum ratings (ta = 25?) drain voltage v dd 1, v dd 2, v dd 38 v gate voltage v gg 1, v gg 2, v gg 3 ? to +1 v input power pin, max. 12 dbm channel temperature tch, max. 150 ? operating temperature ta ?0 to +90 ? storage temperature tstg ?0 to +150 ? note on handling gaas mmics are esd sensitive devices. special handling precautions are required. the ic will be damaged in the range from 60 to 100v@200pf, 0 . the actual esd test data will be submitted later. ?1 e00223-ps sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. CXG1047FN 16 pin hsof (plastic)
? 2 CXG1047FN block diagram r f i n v d d 1 v d d 2 v d d 3 a n t e n n a d u a l b a n d g s m 9 0 0 / 1 8 8 0 0 p a c o n f i g u r a t i o n r x 9 0 0 / 1 8 0 0 / ( 1 9 0 0 ) c x g 1 0 9 1 / 1 0 9 2 s w i t c h e d o u t p u t m a t c h i n g n e t w o r k l p f ( > 2 5 0 0 m h z ) r f o u t d u p l e x e r v g g 3 v g g 2 v g g 1 pin configuration 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 8 7 6 5 4 3 2 1 v g 1 r f i n n c v d 1 n c v g 2 v d 2 m 9 0 0 g n d g n d v d 3 / r f o u t v d 3 / r f o u t v d 3 / r f o u t v d 3 / r f o u t n c v g 3 b o t t o m g n d
? 3 CXG1047FN power amplifier performance measurement conditions: ta = 25 c, pin = +6dbm at 900mhz and pin = +9dbm at 1750mhz, pulsed dc conditions: 12.5% duty cycle 577 s burst duration. all items are specified with the recommended schematic shown on page 6. item frequency frequency range (1) frequency range (2) output power (1) output power ? 900mhz (2) output power ? 1750mhz power control power control range gsm900 power control range dcs1800 off insertion loss ? 900mhz off insertion loss ? 1750mhz efficiency efficiency at 900mhz efficiency at 1750mhz vswr input vswr at gsm900/dcs1800 harmonics tx = 900mhz 2nd harmonics 3rd harmonics 4th harmonics gsm900 dcs1800 p out p out p out p ctl p ctl ins loss ins loss pae pae v dd = 3.5v v dd = 3.5v v dd = 4v, pin = +7dbm * 1 * 1 v dd = 0v pin = +7dbm v dd = 0v pin = +7dbm v dd = 3.5v pin = +6dbm v dd = 3.5v pin = +9dbm after matching cct po = 35dbm@3.5v after matching cct po = 35dbm@3.5v after matching cct po = 35dbm@3.5v 880 1710 34.5 31.5 31.5 38 35 25 35 32 32 35.5 33 33 37 37 2:1 ?0 ?5 ?0 915 1785 3:1 ?5 ?8 ?3 mhz mhz dbm dbm dbm db db db db % % dbc dbc dbc condition min. typ. max. unit symbol
? 4 CXG1047FN item harmonics tx = 1750mhz 2nd harmonics 3rd harmonics 4th harmonics stability measured with 10:1 load impedance all angles load vswr mismatch at 900mhz and 1800mhz transmit noise gsm900 935mhz to 960mhz dcs1800 1805mhz to 1880mhz measured after matching cct po = 32dbm@3.5v after matching cct po = 32dbm@3.5v after matching cct po = 32dbm@3.5v over voltage range 3 to 5v and 0dbm to +10dbm input power * 2 p out = 35dbm p out = 32dbm no oscillation present above ?0dbm 10:1 pin = +7dbm v dd = 3 to 5v ?5 ?0 ?0 ?9 ?9 ?0 ?5 ?5 dbc dbc dbc vswr dbm/ 100khz dbm/ 100khz condition min. typ. max. unit symbol * 1 power control is achived by varying v dd 1/v dd 2 and v dd 3. * 2 when the output matching network is subjected to a 10:1 vswr at all phases the amplifier shall suffer no permanent damage.
? 5 CXG1047FN dual band power amplifier schematic 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 8 7 6 5 4 3 2 1 l 1 r 1 r 5 r 2 l 2 l 3 l 4 l 5 r f i n p u t b a n d s e l e c t c 1 c 4 c 3 c 1 9 c 8 c 9 l 7 r 3 r 4 l 8 l 9 c 1 0 c 2 1 c 1 1 c 1 8 c 1 7 c 1 2 c 1 3 c 1 5 c 1 6 c 1 4 d 1 r f o u t p u t p u l s e d d c s u p p l y 5 m m s l o t i n o / p t r a c k c 2 0 c x g 1 0 4 7 f n c 7 c 6 c 5 dual band power amplifier component values r1 12 r2 12 r3 160 r4 36 r5 8.2 c1 47pf c3 47pf c4 8.2pf c5 47pf c6 1nf c7 47pf c8 1.5pf c9 3.3pf c10 5.6pf c11 47pf c12 2.7/2.7/1.6pf c13 8.2/1.2pf c14 47pf c15 22pf c16 1nf c17 47pf c18 1nf c19 1nf c20 2.7pf c21 8pf l1 68nh l2 8.2nh l3 22nh l4 3.3nh l5 2.7nh l7 68nh l8 68nh l9 8-turn coilcraft spring type d1 ma4p275-1146 ma/com
? 6 CXG1047FN measurement circuit ?pulsed dc supply a n r i t s u g s m m e a s u r e m e n t s e t g a t e o / p p a - d r a i n c o n n e c t i o n s v d d 1 / v d d 2 / v d d 3 p - c h a n n e l f e t 5 7 7 s p u l s e 1 2 . 5 % d u t y c y c l e s i 9 4 2 4 d y 3 . 6 v s d g t t l i n v e r t e r d c s u p p l y recommended alc schematic v b a t v c c v c c v o f f s e t p a r f i n s i l i c o n i x i r f 9 4 2 4 f r o m p a r a m p d a c r f o u t
? 7 CXG1047FN example of representative characteristics 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 8 4 0 8 6 0 8 8 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 3 v , p i n = 6 d b m ) p o u t [ d b m ] 9 0 0 9 2 0 9 4 0 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 8 4 0 8 6 0 8 8 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 3 . 5 v , p i n = 6 d b m ) p o u t [ d b m ] 9 0 0 9 2 0 9 4 0 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 8 4 0 8 6 0 8 8 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 4 v , p i n = 6 d b m ) p o u t [ d b m ] 9 2 0 9 0 0 9 4 0 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 6 4 2 0 2 4 6 8 1 0 1 2 p o u t a n d p a e v s . p i n ( @ v d d = 3 . 5 v , 9 0 0 m h z ) p o u t [ d b m ] p a e [ % ] p i n [ d b m ] p o u t [ d b m ] p a e [ % ]
? 8 CXG1047FN 3 4 3 3 3 2 3 1 3 0 1 7 0 0 1 7 2 0 1 7 4 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 3 v , p i n = 8 d b m ) p o u t [ d b m ] 1 7 6 0 1 7 8 0 1 8 0 0 3 6 3 5 3 4 3 3 3 2 3 1 3 0 1 7 0 0 1 7 2 0 1 7 4 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 3 . 5 v , p i n = 8 d b m ) p o u t [ d b m ] 1 7 6 0 1 7 8 0 1 8 0 0 3 6 3 5 3 4 3 3 3 2 3 1 3 0 1 7 0 0 1 7 2 0 1 7 4 0 f r e q u e n c y [ m h z ] o u t p u t p o w e r ( @ v d d = 4 v , p i n = 8 d b m ) p o u t [ d b m ] p i n [ d b m ] p o u t [ d b m ] p a e [ % ] 1 7 8 0 1 7 6 0 1 8 0 0 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 6 4 2 0 2 4 6 8 1 0 1 2 p o u t a n d p a e v s . p i n ( @ v d d = 3 . 5 v , 1 7 5 0 m h z ) p o u t [ d b m ] p a e [ % ]
? 9 CXG1047FN package outline unit: mm s o n y c o d e e i a j c o d e j e d e c c o d e p a c k a g e m a t e r i a l l e a d t r e a t m e n t l e a d m a t e r i a l p a c k a g e m a s s e p o x y r e s i n s o l d e r p l a t i n g c o p p e r a l l o y p a c k a g e s t r u c t u r e 0 . 0 6 g h s o f 1 6 p i n ( p l a s t i c ) n o t e : d i m e n s i o n * d o e s n o t i n c l u d e m o l d p r o t r u s i o n . b 0 . 9 0 . 1 ( 5 . 5 ) ( 3 . 1 ) ( 1 . 7 5 ) ( 0 . 2 ) ( 0 . 2 ) ( 4 . 4 ) ( 1 . 5 ) ( 0 . 7 ) ( 0 . 5 ) s 0 . 4 5 0 . 1 5 0 . 0 5 * 5 . 6 0 . 1 0 . 6 5 8 1 9 1 6 3 . 8 0 . 1 4 . 4 0 . 1 a m s a s 0 . 0 5 0 . 3 2 0 . 0 3 + 0 . 1 0 . 2 6 0 . 0 3 + 0 . 1 ( 0 . 2 ) 0 . 2 0 + 0 . 0 5 s o l d e r p l a t i n g d e t a i l b h s o f - 1 6 p - 0 2 sony corporation
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