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| Agamem Microelectronics Inc. AA88347AP 8-BIT DAC FEATURE 12 bits serial data input(3 wire serial data transfer method, DI, CLK, LD) R-2R resistor ladder used for D/A conversion 8 channels with 8-bit resolution monotonic D/A converted 8 channel buffer operational amplifiers operating in the full voltage range from VCC to GND only if VDD=VCC and VSS=GND Max. 2.5 MHz serial digital data input Serial I/O for cascade application Max. 1.0 mA output drive/sink current Two separate power supply/ground lines for system and analog power supply Single +5 V system power supply Pin Assignment (Top View) VSS AO2 AO3 AO4 AO5 AO6 AO7 VDD 1 2 16 15 GND AO1 DI CLK LD DO AO8 VCC AA88347AP 3 4 5 6 7 8 14 13 12 11 10 9 DESCRIPTION The AA88347AP is a CMOS processed digital to analog converter (DAC) with 8-bit reso- lotion, low leakage current and low operating current. The AA88347AP has 8 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. 2.5 MHz clock (CLK) rate. The latched 12-bit digital data is converted into an analog DC voltage in the range from VSS to VDD with 8-bit resolution in one of the eight channels by the D/A converter in a max. 100 s settling time. AA88347AP 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, AA88347AP is also available for electronic volume and instead of potentiometers for adjustment due to its high stability on the capacitive load. . 16 pins TSSOP package type are available for AA88347AP. Its operational temper- nature range is specified over -20 to 85 . 1 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC PIN DESCRIPTION Symbol VCC GND VDD VSS CLK LD Data Input/Output D1 DO DAC Output AO1 AO2 AO3 AO4 AO5 AO6 AO7 AO8 15 2 3 4 5 6 7 10 O O O O O O O O 8-bit D/A converter outputs Output range is from VSS to VDD 14 11 I O Serial Digital Data input pin Serial Digital Data output pin. Output from the 12th data in the Shift-Register Pin No. 9 16 8 1 13 12 I I Type Name & Function +5V system power supply pin System ground pin Analog power supply pin Analog ground pin Serial clock input pin. At its rising edge, DI data shift into the Shift-Register. 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 . . 2 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC BLOCK DIAGRAM Digital (Clock) (Serial CLK DI D0 D1 D2 D3 12-bit Shift Register D4 D5 D6 D7 D8 D9 D10 D11 DO Block (Serial digital input) digital output) 4 4-bit Address Decoder 1234 678 LD (Strobe) (System Power) VCC 8 8-bit Data Latch #8 8 8-bit Data Latch #8 GND (System Ground) 8 R-2R D/A Converter #1 8 Analog Block D/A Converter #8 (Analog Power) VDD OP-B #1 OP-B #8 VSS (Anaglog Ground) Analog Output AO1 AO8 * Vcc and GND are for digital block and operational amplifier buffer block * VDD, VSS are only for Analog block except operational amplifier buffer block * Vss + 2V * GND 3 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC Cascade Connection DI CLK LD DO Vcc VDD MCU AA88347AP GND Vss DI CLK LD DO Vcc VDD AA88347AP GND Vss DI CLK LD DO Vcc VDD AA88347AP GND Vss * VDD and VSS of each AA88347AP could be different depend on the application consideration 4 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC Data CLK Input Format MSB DI D11 D10 D9 D2 D1 LSB D0 LD AO1~8 Past Data New Data Data Format LSB in Shift Register MSB DO DI D0 D 1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 Data Address 8 To Data Latch 4 To Address Decoder Data D7 0 0 0 D6 0 0 0 Conversion Data D5 0 0 0 D4 0 0 0 D3 0 0 0 D2 0 0 0 D1 0 0 1 D0 0 1 0 DAC Output Level AOx VSS VSS + LSB* VSS + 2 * LSB 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 VDD - LSB VDD * LSB = (VDD-VSS)/255 5 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC Channel Address 1H 2H 3H 4H 5H 6H 7H 8H Map D-L #1 D-L #2 D-L #3 D-L #4 D-L #5 D-L #6 D-L #7 D-L #8 R-2R D/A #1 R-2R D/A #2 R-2R D/A#3 R-2R D/A#4 R-2R D/A#5 R-2R D/A#6 R-2R D/A#7 R-2R D/A#8 OP-B #1 OP-B #2 OP-B #3 OP-B #4 OP-B #5 OP-B #6 OP-B #7 OP-B #8 AO1 AO2 AO3 AO4 AO5 AO6 AO7 AO8 Address Decoding Address D8 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D9 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D10 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D11 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 NA Data Latch #1 Data Latch #2 Data Latch #3 Data Latch #4 Data Latch #5 Data Latch #6 Data Latch #7 Data Latch #8 NA NA NA NA NA NA NA Data Latch Selected 6 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS (See NOTE) Parameter System Voltage Analog Voltage Input Voltage Output Voltage Power Dissipation Operating Ambient Temperature Storage Temperature TS -55 +150 Symbol Min VCC VDD VIN VOUT PD Ta -20 -0.3 -0.3 -0.3 -0.3 Rating Typ Max +7.0 +7.0 VCC + 0.3 VCC + 0.3 250 +85 V V V V mW Ta = +25 GND = 0V VDD VCC, Ta = +25 GND = 0V Unit Condition 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. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min System Voltage VCC GND Analog Voltage Analog Output Current Analog Output Load Capacitance for Oscillation limit Operating Ambient Temperature VDD VSS IAO COL Ta -20 2.0 GND -1.0 4.5 Rating Typ 5.0 0 VCC VCC - 2.0 +1.0 +1.0 +85 Max 5.5 V V V V mA F VAO shift 0.3V VCC VDD, VDD - VSS 2.0V Vss GND Unit Condition 7 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC DC CHARACTERISTICS Digital Block Parameter System Voltage System Current Input Leakage Current Digital Input Low Voltage Digital Input High Voltage Digital Output Low Digital Output High Symbol Min VCC ICC IILK VIL VIH VOL VOH VCC - 0.4 0.5VCC 0.4 -5 4.5 Value Typ 5.0 1.2 Max 5.5 2.5 +5 0.2VCC V mA CLK = 1 MHz, No load; A VIN = 0V / 5V V V V V IOL = +2.5 mA IOH = -400 A Unit Ta = 25 Condition Analog Block Parameter Symbol Min IDD VDD VSS VAOH VAOH VAOH VAOL VAOL VAOL Res INL DNL -3.5 -1.5 0 2.0 GND VDD - 0.1 VDD - 0.2 VDD - 0.3 VSS - 0.1 VSS - 0.2 VSS - 0.3 VDD VDD VDD VSS VSS VSS 8 +3.5 +2.5 Value Typ 0.7 Max 1.0 VCC VCC - 2.0 VDD + 0.1 VDD + 0.2 VDD + 0.3 VSS + 0.1 VSS + 0.2 VSS + 0.3 mA No load V V V V V V V V bit IAOH = 0 A IAOH = -500 A IAOH = -1mA IAOL = 0 A IAOL = 500 A IAOL = 1mA VDD -VSS Unit Ta = 25 Condition Analog Current Analog Voltage Analog Output Drive Range (VCC=VDD=5V, VSS=GND=0V, Data=#FF) Analog Output Sink Range (VCC=VDD=5V, VSS=GND=0V, Data=#00) Resolution (AOx) Integral Non-Linearity Differential Non-Linearity NOTES: 2V VCC =5.5V, GND=0V LSB VDD=4.775V, VSS=0.95 LSB = 15mv, no load LSB 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. 8 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC AC CHARACTERISTICS Parameter Clock Rate Load Strobe Pulse Width Analog Output Settling Time Digital Output Delay Time Symbol Min TCR TLDP TAOS TDDO Value Typ 200 100 350 Max 400 1000 Unit ns ns ns Condition Ta = 25 s *RAL = 10 k , CAL = 50pF (#00--> #FF) ns **CL = 100 pF (Max.) AC Test * Condition * Analog Output Settling Time Test Point Digital Output Delay Time Test Point Device Under Test RAL* Device Under Test CL** CAL* Timing Chart 0.8 Vcc CLK 0.2 Vcc 0.2 Vcc TCR LD TLDP 0.8 Vcc TAOS AOx Past Data TDDO 0.9 0.1 New Data DO Past Data 0.8 0.2 New Data 9 2006/7/5 Agamem Microelectronics Inc. AA88347AP 8-BIT DAC TSSOP PACKAGE DIMENSION SYMBOLS A A1 A2 b C D E DIMENSIONS IN MILLIMETERS MIN --0.05 0.80 0.19 0.09 4.90 6.20 4.30 --0.45 --0 DIMENSIONS IN INCHES MIN --0.002 0.031 0.007 0.004 0.193 0.244 0.169 --0.018 --0 NOM ----1.00 ----5.00 6.40 4.40 0.65 0.60 ----- MAX 1.20 0.15 1.05 0.30 0.20 5.10 6.60 4.50 --0.75 0.10 8 NOM ----0.039 ----0.197 0.252 0.173 0.026 0.024 ----- MAX 0.048 0.006 0.041 0.012 0.008 0.201 0.260 0.177 --0.030 0.004 8 NOTES: 1. Package body sizes exclude mold flash protrusions or gate burrs 2. Tolerance 0.1 (4 mil) unless otherwise specified 3. Coplanarity:0.1 4. Controlling dimension is millimeter converted inch dimensions are not necessarily exact 5. Followed from jedec mo-153 10 2006/7/5 |
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