Agamem Microelectronics Inc. AA88349 PRELIMINARY 8-BIT DAC ■ DESCRIPTION The AA88349 is a CMOS processed digital to analog converter (DAC) with 8-bit resolotion, low leakage and operating current. The AA88349 has 3 channels with build in operational amplifier output buffers which could operate in the full-swing voltage range from VCC to GND and enhance the Drive/Sink ability up to max. 1mA. Digital data (DI) input serially in a max. 2.5MHz clock (CLK) rate. The latched 12-bit digital data is converted into an analog DC voltage in the range from GND to VCC with 8-bit resolution in one of the 3 channels by the D/A converter in a max. 100μs settling time. AA88349 is a single 5V power DAC. Analog DC output could be full voltage swing as the analog power is equal to the system power. In addition to normal D/A converter applications, AA88349 is also available for electronic volume and instead of potentio- meters for adjustment due to its high stability on the capacitive load. 8 pins TSSOP package type are available for AA88349. Its operational temper- nature range is specified over –20℃ to 85℃. ■ FEATURES • 12 bits serial data input (3 wire serial data transfer method, DI, CLK, LD) • R-2R resistor ladder used for D/A conversion • 3 channels with 8-bit resolution monotonic D/A converter • 3 channels buffer operational amplifiers operating in the full voltage range from VCC to GND • Max. 2.5 MHz serial digital data input • Serial I/O for cascade application • Max. 1.0 mA output drive/sink current • Single +5 V system power supply ■ APPLICATION DVD, CD-R, CD-RW, DVC, digital camera, and other industrial equipments ©Copyright Agamem Microelectronics Inc. 1 www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. AA88349 Agamem Microelectronics Inc. PRELIMINARY 8-BIT DAC ■ BLOCK DIAGRAM Digital (Clock) CLK Block 12-bit Shift Register D0 DI (Serial digital Input) D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 -----4 ----------------- 4-bit Address Decoder 1 2 3 4 --------------------- 8 VCC (System Power) DO (Serial digital Ouput) ---- 6 7 8 8-bit 8-bit --------------------Data Latch #8 Data Latch #8 8 LD (Strobe) 8 GND (System Ground) 8 Analog Block R-2R R-2R D/A Converter #1 - - - - - - - - - - - - - - - - - - - - - D/A Converter #8 OP-B #1 Analog Output ------------------------- AO1 ········································ OP-B #8 AO3 ■ PIN DESCRIPTIONS PIN NO. 4 PIN NAME VCC PIN FUNCTION +5V system power supply pin 8 GND System ground pin 6 CLK Serial clock input pin. At its rising edge, DI data shift into the Shift-Register. 5 LD . Data Strobe pin. When it’s on high, upper 4-bit and lower 8-bit of the 12-bit in the Shift-Register be latched into the Address Decoder and the Data-Latch, respectively ©Copyright Agamem Microelectronics Inc. 2 www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. Agamem Microelectronics Inc. PRELIMINARY PIN NO. PIN NAME AA88349 8-BIT DAC PIN FUNCTION Data Input 7 D1 Serial Digital Data input pin DAC Output 1 AO1 2 AO2 3 AO3 8-bit D/A converter outputs Output range is from GND to VCC ■ DATA INPUT FORMAT ■ DATA FORMAT IN SHIFT REGISTER ©Copyright Agamem Microelectronics Inc. 3 www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. Agamem Microelectronics Inc. AA88349 PRELIMINARY 8-BIT DAC ■ DATA CONVERSION DATA D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 ︴ ︴ ︴ ︴ ︴ ︴ ︴ ︴ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 DAC OUTPUT LEVEL AOX GND GND + LSB* GND+ 2 * LSB ︴ 0 1 VCC - LSB VCC z LSB = (VCC-GND)/255 ■ CHANNEL MAP ■ ADDRESS DECODING D8 0 0 0 0 0 0 0 0 ADDRESS D9 D10 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1 ©Copyright Agamem Microelectronics Inc. DATA LATCH SELECTED D11 0 1 0 1 0 1 0 1 NA Data Latch #1 NA NA NA Data Latch #2 Data Latch #3 NA 4 www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. AA88349 Agamem Microelectronics Inc. PRELIMINARY 8-BIT DAC ADDRESS D9 D10 0 0 0 1 0 1 1 0 1 0 1 1 1 1 D8 1 1 1 1 1 1 1 DATA LATCH SELECTED D11 1 0 1 0 1 0 1 NA NA NA NA NA NA NA ■ ABSOLUTE MAXIMUM RATINGS Ta=25℃, unless otherwise noted PARAMETER SYMBOL RATING TYP － UNIT System Voltage VCC MIN -0.3 Input Voltage VIN -0.3 － VCC + 0.3 V VOUT -0.3 － VCC + 0.3 V PD － － 250 mW TA -20 － +85 ℃ TS -55 － +150 ℃ Output Voltage Power Dissipation Operating Ambient Temperature Storage Temperature MAX +7.0 V NOTE: Stress above those listed under “Absolute Maximum Rating” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for the extended periods of time may affect device reliability. ■ ELECTRICAL CHARACTERISTICS ◆ RECOMMENDED OPERATING CONDITIONS SYMBOL VCC GND IAO PARAMETER CONDITIONS MIN 4.5 System Voltage Analog Output Current ©Copyright Agamem Microelectronics Inc. VAO shift≦0.3V 5 LIMITS TYP MAX 5.0 5.5 UNIT V － 0 － V -1.0 － +1.0 mA www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. AA88349 Agamem Microelectronics Inc. PRELIMINARY 8-BIT DAC LIMITS SYMBOL PARAMETER UNIT CONDITIONS MIN TYP MAX COL Analog Output Load Capacitance for Oscillation limit － － +1.0 μF TA Operating Ambient Temperature -20 － +85 ℃ ◆ DC CHARACTERISTICS Ta = 25℃ PARAMETER VALUE MIN TYP MAX 4.5 5.0 5.5 1.2 2.5 － SYMBOL System Voltage VCC ICC System Current Input Leakage Current Digital Input Low Voltage Digital Input High Voltage Digital Output Low IILK VIL VIH VOL VOH Digital Output High -5 － 0.5‧VCC － VCC – 0.4 UNIT CONDITIONS V mA CLK = 1 MHz, No load; +5 － μA VIN = 0V / 5V － 0.2‧VCC V V － － 0.4 V IOL = +2.5 mA － V IOH = –400μA － － NOTES: Integral Non-Linearity: The difference between the digital data converted DC analog values and a reference straight line drawn through the first and the last output values Differential Non-Linearity: The difference between the ideal and real increment value of DC analog voltage when the digital data increase 1 bit. ◆ AC CHARACTERISTICS Ta = 25℃ PARAMETER Clock Rate Load Strobe Pulse Width Analog Output Settling Time Digital Output Delay Time SYMBOL TCR TLDP VALUE UNIT MIN TYP MAX 400 1000 － ns ns － 200 － TAOS － － 100 μs TDDO － － 350 ns ©Copyright Agamem Microelectronics Inc. 6 CONDITIONS *RAL = 10 kΩ, CAL = 50pF (#00--> #FF) **CL = 100 pF (Max.) www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. Agamem Microelectronics Inc. AA88349 PRELIMINARY 8-BIT DAC AC TEST CONDITION TIMING CHART ■ ORDERING INFORMATION ORDER NO. PACKAGE PACKING ONE REEL Q’TY AA88349A TSSOP8L Tape & Reel 3,000ea ©Copyright Agamem Microelectronics Inc. 7 MARK CHART 88349 XXXX A www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. AA88349 Agamem Microelectronics Inc. PRELIMINARY 8-BIT DAC ■ PACKAGE DIMENSIONS NOTES: Package body sizes exclude mold flash protrusions or gate burrs Tolerance ± 0.1㎜ (4 mil) unless otherwise specified Coplanarity:0.1㎜ Controlling dimension is millimeter converted inch dimensions are not necessarily exact Followed from jedec mo-153 SYMBOLS DIMENSIONS IN MILLIMETERS MIN NOM MAX DIMENSIONS IN INCHES MIN NOM MAX --- 1.20 --- 0.05 --- 0.15 0.80 1.00 1.05 b 0.19 --- C 0.09 --- A --- A1 A2 --- 0.048 0.002 --- 0.006 0.031 0.039 0.041 0.30 0.007 --- 0.012 0.20 0.004 --- 0.008 D 2.90 3.00 3.10 0.114 0.118 0.122 E 6.20 6.40 6.60 0.244 0.252 0.260 E1 4.30 4.40 4.50 0.169 0.173 0.177 --- --- 0.026 --- e --- 0.65 L 0.45 0.60 0.75 0.018 0.024 0.030 y --- --- 0.10 --- --- 0.004 θ 0° --- 8° 0° --- ©Copyright Agamem Microelectronics Inc. 8 8° www.agamem.com.tw 2008/10/31 AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.