DAC8222GPZ Analog Devices Inc, DAC8222GPZ Datasheet
DAC8222GPZ
Specifications of DAC8222GPZ
Related parts for DAC8222GPZ
DAC8222GPZ Summary of contents
Page 1
GENERAL DESCRIPTION The DAC8222 is a dual 12-bit, double-buffered, CMOS digital- to-analog converter. It has a 12-bit wide data port that allows a 12-bit word to be loaded directly. This achieves faster through- put time in stand-alone systems or ...
Page 2
DAC8222–SPECIFICATIONS ELECTRICAL CHARACTERISTICS T = Full Temperature Range Specified in Absolute Maximum Ratings; unless otherwise noted. Specifications apply for DAC A and DAC B.) A Parameter Symbol Conditions STATIC ACCURACY Resolution N Relative Accuracy INL Differential Nonlinearity DNL 1 Full-Scale ...
Page 3
ABSOLUTE MAXIMUM RATINGS (T = +25°C, unless otherwise noted AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4
DAC8222 DICE CHARACTERISTICS × × WAFER TEST LIMITS (@ + Parameter Symbol Relative Accuracy INL Differential Nonlinearity DNL 1 Full Scale Gain Error G FSE Output Leakage ( ...
Page 5
TYPICAL PERFORMANCE CHARACTERISTICS ° ° ° DAC8222 ...
Page 6
DAC8222 TYPICAL PERFORMANCE CHARACTERISTICS ...
Page 7
PARAMETER DEFINITIONS RESOLUTION (n) The resolution of a DAC is the number of states (2 the full-scale range (FSR) is divided (or resolved); where n is equal to the number of bits. RELATIVE ACCURACY (INL) Relative accuracy, or integral nonlinearity, ...
Page 8
DAC8222 between I and AGND terminals be as close to zero as practi- OUT cal in order to keep DAC errors to a minimum. This is normally done by connecting AGND to the noninverting input amp and ...
Page 9
Digital Inputs DAC A/B WR LDAC Low High Don’t Care INTERFACE CONTROL LOGIC DAC A/DAC B ...
Page 10
DAC8222 APPLICATIONS INFORMATION UNIPOLAR OPERATION Figure 24 shows a simple unipolar (2-quadrant multiplication) circuit using the DAC8222 and OP270 dual op amp (use two OP42s for higher speeds), and Table II the corresponding code table. Resistors R1, R2, and R3, ...
Page 11
Table III. Bipolar (Offset Binary) Code Table (Refer to Figure 25) Binary Number in DAC Register Analog Output, V (DAC A or DAC B) MSB LSB 1111 1111 1111 +V REF 1000 0000 0001 +V REF 1000 0000 0000 0 ...
Page 12
DAC8222 SINGLE SUPPLY OPERATION CURRENT STEERING MODE Because the DAC8222’s R-2R resistor ladder terminating resis- tor is internally connected to AGND, it lends itself well to single supply operation in the current steering mode. This means that AGND can be ...
Page 13
BASIC APPLICATIONS PROGRAMMING WINDOW DETECTOR Figure 28 shows the DAC8222 used in a programmable window detector configuration. The required upper and lower limits for the test are loaded into DAC A and DAC signal at the test ...
Page 14
DAC8222 ...
Page 15
Cerdip (Q-24) 0.005 (0.13) MIN 0.098 (2.49) MAX 24 13 0.310 (7.87) 0.220 (5.59 PIN 1 0.060 (1.52) 1.280 (32.51) MAX 0.015 (0.38) 0.200 (5.08) MAX 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.100 (2.54) 0.070 (1.78) BSC ...