PDF TDA9935 Data sheet ( Hoja de datos )

Número de pieza	TDA9935
Descripción	Dual 14-bit up to 160 Msample/s 2 interpolating Digital-to-Analog Converter
Fabricantes	NXP Semiconductors
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No Preview Available ! TDA9935 www.DataSheet4U.com Dual 14-bit, up to 160 Msample/s, 2 × interpolating Digital-to-Analog Converter (DAC) Rev. 04 — 17 September 2007 Product data sheet 1. General description The TDA9935 is optimized to reduce architecture complexity and overall system cost. Thanks to its direct IF conversion capabilities, it leads dynamic performance in multi-carrier support. With an internal sampling rate up to 160 Msample/s, TDA9935 is an extremely competitive solution for WCDMA, CDMA2000 and GSM/EDGE transmitters, as well as high data rate radio services like WLL, LMDS and BWA. 2. Features I Dual 14-bit resolution I SFDR = 80 dBc at 2.5 MHz I Input data rate up to 80 Msample/s I 2 × interpolation ﬁlter I Output data rate up to 160 Msample/s I Single 3.3 V power supply I Low noise capacitor-free integrated PLL I Low power dissipation I HTQFP80 package I Ambient temperature from −40 °C to +85 °C 3. Applications I Broadband wireless systems I Digital radio links I Cellular base stations I Instrumentation 1 page NXP Semiconductors TDA9935www.DataSheet4U.com Dual 14-bit, up to 160 Msample/s, 2 × interpolating DAC Table 2. Pin description …continued Symbol Pin Type[1] Description VCCD DGND 51 S 52 G digital supply voltage digital ground DGND 53 G digital ground DGND 54 G digital ground DGND 55 G digital ground DGND 56 G digital ground GAPD 57 I internal band gap power disable input GAPOUT 58 I/O band gap output voltage QVIRES 59 I Q DAC biasing resistor IVIRES 60 I I DAC biasing resistor VCCA AGND 61 S 62 G analog supply voltage analog ground DEC 63 O decoupling node AGND 64 G analog ground VCCA AGND 65 S 66 G analog supply voltage analog ground AGND 67 G analog ground QOUTN 68 O complementary Q DAC output current QOUT 69 O Q DAC output current AGND 70 G analog ground AGND 71 G analog ground IOUTN 72 O complementary I DAC output current IOUT 73 O I DAC output current AGND 74 G analog ground AGND 75 G analog ground VCCA AGND 76 S 77 G analog supply voltage analog ground DEC 78 O decoupling node AGND 79 G analog ground VCCA 80 S analog supply voltage [1] Type description: S: Supply; G: Ground; I: Input; O: Output. TDA9935_4 Product data sheet Rev. 04 — 17 September 2007 © NXP B.V. 2007. All rights reserved. 5 of 18 5 Page NXP Semiconductors TDA9935www.DataSheet4U.com Dual 14-bit, up to 160 Msample/s, 2 × interpolating DAC 20 output (dB) −20 −60 −100 −140 001aab122 0.6 normalized output 0.4 0.2 0 001aab123 −180 0 0.2 0.4 0.6 0.8 1.0 normalized frequency (fOUT/fCLK) Fig 6. FIR ﬁlter frequency response −0.2 0 10 20 30 40 t (sample) Fig 7. FIR ﬁlter impulse response Table 7. Interpolation FIR ﬁlter coefﬁcient Coefﬁcient Coefﬁcient H(1) H(43) H(2) H(42) H(3) H(41) H(4) H(40) H(5) H(39) H(6) H(38) H(7) H(37) H(8) H(36) H(9) H(35) H(10) H(34) H(11) H(33) H(12) H(32) H(13) H(31) H(14) H(30) H(15) H(29) H(16) H(28) H(17) H(27) H(18) H(26) H(19) H(25) H(20) H(24) H(21) H(23) H(22) - Value 10 0 −31 0 69 0 −138 0 248 0 −419 0 678 0 −1 083 0 1 776 0 −3 282 0 10 364 16 384 TDA9935_4 Product data sheet Rev. 04 — 17 September 2007 © NXP B.V. 2007. All rights reserved. 11 of 18 11 Page

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