ADC16R02 5V, 16 Bit ADC 28 KSPS, Resistive Ladder ADC DAC/ADC AMI 0.6 micron CMOS Features General Description • 16 bit parallel output, 16 bits resolution. • The input to be converted ranges from 1V to 4V, where 1V is encoded as 0000000000000000 and 4V as 1111111111111111. • Maximum clock rate of 5 MHz, which is equivalent to 28.4 kHz conversion rate. • The operating voltage is 5V, which is for both analog power supply and digital power supply. • Low Power, CMOS design, typically than 2 mw. The ADC16R02 is realized in resistive ladder architecture. The part operates from a single 5V supply. This 16 bit ADC is designed to run in a continuous mode. After RST signal is asserted high, the conversion begins. Each conversion takes at most 22 clock-cycles. A 5 MHz input clock corresponds to 28.4 kHz conversion rate. After one conversion is completed a rising edge for valid signal is used to latch 16 bits output. This valid signal is also used to sample the input to start next conversion immediately. If at any time the RST goes low, the chip will stay at reset. The ADC16R02 operates at low power of typically less than 2mW. This characteristic makes the ADC16R02 ideal for the application in low-power portable devices. Functional Diagram Block VREF Applications Input • Low power portable applications • Instrumentation • DSP control loops • Audio processing • Low speed data acquisition Out [3:0] Product Highlights • Low-power operation, less than 2 mW. • Hybrid design of both resistor network and capacitor network guarantees highest accuracy. • Offset is compensated internally. • Single-supply operation. This part operates from a single +5V supply. • Small layout area, 1.7 x 2mm without pads. • Conversion rate is 28.4 kHz at a power consumption of less than 2 mW. • Part is realized in AMI's 0.6µ process. A version in AMI's 1.5µ process allows operation at higher voltages. Clk Note: VIN: Input analog voltage. RESET: Reset the chip. Active low. CLK: Clock input (5 MHz max). VL: Logic supply voltage (5V Typical). VN: Digital ground (0V). V5: Analog supply voltage (5V Typical). AGND: Analog ground (0V). VREF: Reference Voltage (typically 2.5V). Valid: Valid signal, active high. Indicates conversion is complete and data is latched at the outputs. Q0-Q15: 16 bit latched-output of the ADC. Q15 is MSB. Q0 is LSB. 1 ADC16R02 5V, 16 Bit ADC 28 KSPS, Resistive Ladder ADC DAC/ADC AMI 0.6 micron CMOS Electrical Characteristics PARAMETER MIN TYP MAX UNITS RESOLUTION 16 Bits ACCURACY 12 Bits FULL-SCALE CALIBRATION TBD LSB OFFSET TBD LSB DIFFERENTIAL NONLINEARITY TBD LSB ANALOG INPUT CAPACITANCE 20 pF ANALOG INPUT RANGES OUTPUT CODING 1 True Binary 5 True Binary V True Binary LOGIC OUTPUT Output Sink Current (VOUT = 5 V max) (VOUT = 0.2 V max) Output Leakage 1.5 1.5 0.07 µA µA µA LOGIC INPUT Input Current Logic "1" Logic "1" 0.5 5 0 µA V V 0.033 ms POWER SUPPLY V+ V- 5 0 V V OPERATING CURRENT V+ V- 1 0 mA mA 2.5 V CONVERSION TIME VREF 2 ADC16R02 5V, 16 Bit ADC 28 KSPS, Resistive Ladder ADC DAC/ADC AMI 0.6 micron CMOS Absolute Maximum Ratings PARAMETER Supply Voltage (Vdd) 6 Analog-to-Digital Supply Voltage Differential V V Analog Input Voltage 6 V Digital Input Voltage 5.5 V 6 V Reference Input Voltage (+VREF – VREF) Differential Reference Voltage V Reference Midpoint Current 0 mA Digital Output Current 2 µA 0/70 °C -20/125 °C 150 °C Operating Temperature Range Storage Temperature Range Junction Temperature Lead Soldering Temperature (10 sec.) °C 3 ADC16R02 5V, 16 Bit ADC 28 KSPS, Resistive Ladder ADC DAC/ADC AMI 0.6 micron CMOS Copyright®1998, American Microsystems, Inc. Devices sold by AMI are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMI makes no warranty, express, statutory implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMI makes no warranty of merchantability or fitness for any purposes. AMI reserves the right to discontinue production and change specifications and prices at any time and without notice. AMI's products are intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing by AMI for such applications. American Microsystems, Inc., 2300 Buckskin Rd., Pocatello, ID 83201, (208) 233-4690, FAX (208) 234-6796 1-800-639-7264, www.amis.com ADC16R02 GA98097PM8/98 4