DATASHEET ISL5857 FN6079 Rev 3.00 12-bit, +3.3V, 260+MSPS, High Speed D/A Converter October 7, 2015 The ISL5857 is a 12-bit, 260+MSPS (Mega Samples Per Features Second), CMOS, high speed, low power, D/A (digital-to-analog) Low power 103mW with 20mA output at 130MSPS converter designed specifically for use in high performance communication systems such as base transceiver stations Adjustable full scale output current . 2mA to 20mA utilizing 2.5G or 3G cellular protocols. +3.3V power supply This device complements the ISL5x57 family of high speed 3V LVCMOS compatible inputs converters, which include 10, 12, and 14-bit devices. Excellent spurious free dynamic range (73dBc to Nyquist, f = 130MSPS, f = 10MHz) S OUT Applications UMTS adjacent channel power = 70dB at 19.2MHz Cellular Infrastructure - single or multicarrier: IS-136, IS-95, GSM, EDGE, CDMA2000, WCDMA, TDS-CDMA EDGE/GSM SFDR = 90dBc at 11MHz in 20MHz window BWA infrastructure Pin compatible, 3.3V, lower power replacement for the AD9752 and HI5860 Medical/test instrumentation Pb-free (RoHS compliant) Wireless communication systems High resolution imaging systems Arbitrary waveform generators ISL5857 ONE CONNECTION (25, 19) NC (15) SLEEP DCOM ACOM (16) REFLO D11 (MSB) (1) D11 D10 D10 (2) (17) REFIO D9 D9 (3) 0.1F D8 D8 (4) D7 D7 (5) (18) FSADJ D6 D6 (6) R 1.91k SET 1:1, Z1:Z2 D5 D5 (7) (22) IOUTA D4 D4 (8) (50) 50 (21) IOUTB D3 D3 (9) REPRESENTS D2 D2 (10) ANY 50 LOAD D1 D1 (11) D0 D0 (LSB) (12) (23) COMP CLK (28) 0.1F DCOM (26, 13, 14) 50 (20) ACOM FERRITE BEAD BEAD (24) AV DV (27) DD DD + + 10H 10H +3.3V (V ) DD 10F 0.1F 0.1F 10F FIGURE 1. TYPICAL APPLICATIONS CIRCUIT FN6079 Rev 3.00 Page 1 of 14 October 7, 2015ISL5857 Functional Block Diagram IOUTA IOUTB CASCODE (LSB) D0 CURRENT SOURCE D1 INPUT LATCH D2 D3 7 LSBs SWITCH 38 38 + D4 MATRIX 31 MSB D5 SEGMENTS D6 D7 D8 UPPER D9 5-BIT D10 DECODER D11 COMP CLK INT/EXT BIAS VOLTAGE GENERATION REFERENCE REFLO REFIO FSADJ SLEEP FIGURE 2. FUNCTIONAL BLOCK DIAGRAM Pin Configuration ISL5857 28 LD SOIC/TSSOP TOP VIEW D11 (MSB) 1 28 CLK D10 2 27 DV DD D9 3 26 DCOM 25 D8 4 NC 5 24 AV D7 DD D6 6 23 COMP D5 7 22 IOUTA D4 8 21 IOUTB D3 9 20 ACOM D2 10 19 NC D1 11 18 FSADJ 17 D0 (LSB) 12 REFIO 13 16 DCOM REFLO DCOM 14 15 SLEEP FN6079 Rev 3.00 Page 2 of 14 October 7, 2015