LTC1957-2EMS Linear Technology, LTC1957-2EMS Datasheet - Page 12

• Manufacturer Part Number: LTC1957-2EMS
• Description: IC RF PWR CONTROLLR DUAL 10-MSOP
• Manufacturer: Linear Technology

Specifications of LTC1957-2EMS

• Rf Type: Cellular, GSM, GPRS, PCS, Wireless Modem, TDMA
• Frequency: 850MHz ~ 2GHz
• Features: Dual Output
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1957-1/LTC1957-2
U
U
W
U
APPLICATIO S I FOR ATIO
*LTC1957 Low Frequency AC Spice Model*
GIN1 ND2 0 ND1A IFB 100E-6
GX3 ND6 0 0 ND4 1E-6
GX4 ND7 0 0 ND6 1E-6
GX1 ND3 0 0 ND2 1E-6
GX2 ND4 0 0 ND3 1E-6
GX5 ND10 0 0 ND9 1E-6
GX8 ND14 0 0 ND12 1E-6
GX7 ND12 0 0 ND11 1E-6
GX6 ND11 0 0 ND10 1E-6
GXFB IFB 0 0 ND14 28.8E-6
EX1 ND8 0 0 ND7 1
RPCTL2 ND1 0 33E3
RFILT ND1 ND1A 50E3
RO1 ND2 0 70E6
RX3 ND6 0 1E6
RX4 ND7 0 1E6
RPCTL1 PCTL ND1 53E3
RX1 ND3 0 1E6
RX2 ND4 ND5 1E6
RSD RF ND9 500
RX5 ND10 0 1E6
RT RF 0 250
RX8 ND14 0 1E6
RX7 ND12 ND13 1E6
RX6 ND11 0 1E6
R9 ND8 ND8A 100
R9A ND8A VPCA 20
RLOAD VPCA 0 2E3
RFB1 IFB 0 22E3
CPCTL1 ND1A 0 7E-12
CX3 ND6 0 8E-15
CX4 ND7 0 12E-15
CC1 ND2 0 24E-12
CX1 ND3 0 2E-15
CX5 ND10 0 10E-15
CX6 ND11 0 1.2E-15
CLOAD VPCA 0 33E-12
CLINT ND8A 0 37E-12
CLINTA VPCA 0 18E-12
CFB1 IFB 0 300E-15
CP ND9 0 28E-12
LX2 ND5 0 34E-3
LX7 ND13 0 7E-3
**Closed loop connections, comment-out VPCTLO, VRF, Adjust EFB gain to reflect external gain, currently set at 3X**
*EFB RF 0 VPCA VIN 3
VIN VIN 0 DC 0 AC 1
*VPCTLO PCTL 0 DC 0
**Open loop connections, comment-out EFB, VIN and VPCTLO**
VPCTLO PCTL 0 DC 0
VRF RF 0 DC 0 AC 1
**Add AC statement and print statement as required**
.AC DEC 50 100 1E7
.END
Figure 7. LTC1957 Low Frequency AC SPICE Model
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