AD8403AN1 Analog Devices, AD8403AN1 Datasheet
AD8403AN1
Related parts for AD8403AN1
AD8403AN1 Summary of contents
Page 1
GENERAL DESCRIPTION The AD8400/AD8402/AD8403 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable ...
Page 2
AD8400/AD8402/AD8403–SPECIFICATIONS ELECTRICAL CHARACTERISTICS–10 k VERSION Parameter DC CHARACTERISTICS RHEOSTAT MODE (Specifications Apply to All VRs) 2 Resistor Differential NL 2 Resistor Nonlinearity 3 Nominal Resistance Resistance Tempco Wiper Resistance Nominal Resistance Match DC CHARACTERISTICS POTENTIOMETER DIVIDER Specifications Apply to All ...
Page 3
SPECIFICATIONS ( ELECTRICAL CHARACTERISTICS–50 k and 100 k Parameter DC CHARACTERISTICS RHEOSTAT MODE (Specifications Apply to All VRs) 2 Resistor Differential NL 2 Resistor Nonlinearity 3 Nominal Resistance Resistance Tempco Wiper Resistance Nominal Resistance Match DC ...
Page 4
AD8400/AD8402/AD8403–SPECIFICATIONS ELECTRICAL CHARACTERISTICS–1 k VERSION Parameter DC CHARACTERISTICS RHEOSTAT MODE Specifications Apply to All VRs 2 Resistor Differential NL 2 Resistor Nonlinearity 3 Nominal Resistance Resistance Tempco Wiper Resistance Nominal Resistance Match DC CHARACTERISTICS POTENTIOMETER DIVIDER Specifications Apply to All ...
Page 5
SPECIFICATIONS ( ELECTRICAL CHARACTERISTICS–ALL VERSIONS Parameter 2, 3 SWITCHING CHARACTERISTICS Input Clock Pulsewidth Data Setup Time Data Hold Time 4 CLK to SDO Propagation Delay CS Setup Time CS High Pulsewidth Reset Pulsewidth CLK Fall to ...
Page 6
AD8400/AD8402/AD8403 ABSOLUTE MAXIMUM RATINGS (T = 25°C, unless otherwise noted GND . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 7
... AD8403AN100 4 AD8403AR100 4 AD8403ARU100 4 AD8403ARU100-REEL 4 AD8400AN1 1 AD8400AR1 1 AD8402AN1 2 AD8402AR1 2 AD8402ARU1 2 AD8402ARU1-REEL 2 AD8403AN1 4 AD8403AR1 4 AD8403ARU1 4 AD8403ARU1-REEL Plastic DIP Small Outline Thin Shrink SO. The AD8400, AD8402, and AD8403 contain 720 transistors. ORDERING GUIDE End-to-End Temperature Package Range ( C) Description AB 10 –40 to +125 ...
Page 8
AD8400/AD8402/AD8403 PIN CONFIGURATIONS AD8400 2 GND 7 TOP VIEW CS (Not to Scale SDI AGND AD8402 TOP VIEW (Not to Scale) 5 ...
Page 9
Typical Performance Characteristics–AD8400/AD8402/AD8403 10k 128 160 192 224 256 CODE – Decimal 1205 UNITS ...
Page 10
AD8400/AD8402/AD8403 700 600 T = –40 C/+ CONNECT A 500 R MEASURED WB 400 300 200 100 0 –100 128 160 192 224 256 CODE – Decimal ...
Page 11
SEE TEST CIRCUIT 7 CODE = 10k R = 50k R = 100k 10 100 1k 10k 100k 1M FREQUENCY – 700kHz, ...
Page 12
AD8400/AD8402/AD8403 TEST CIRCUITS DUT 1LSB = V+/256 CONNECT DUT DUT 1V/R W NOMINAL ...
Page 13
OPERATION The AD8400/AD8402/AD8403 provide a single, dual, and quad channel, 256-position digitally controlled variable resistor (VR) device. Changing the programmed VR settings is accomplished by clocking in a 10-bit serial data word into the SDI (Serial Data Input) pin. The ...
Page 14
AD8400/AD8402/AD8403 where Dx is the data contained in the 8-bit RDAC# latch, and R is the nominal end-to-end resistance. For example, when and B terminal is open circuit, the following output A resistance values will ...
Page 15
Table II. Input Logic Control Truth Table CLK CS RS SHDN Register Activity effect, enables SDO pin Shift one bit in from the SDI pin. The tenth previously entered bit ...
Page 16
... The ac characteristics of the RDACs are dominated by the internal parasitic capacitances and the external capacitive loads. The –3 dB bandwidth of the AD8403AN10 (10 kΩ resistor) measures 600 kHz at half scale as a potentiometer divider. TPC 22 provides the large signal BODE plot characteristics of the three available resistor versions 10 kΩ ...
Page 17
... The filter gain response at the band-pass output is shown in Figure 12 center frequency of 2 kHz, the gain is adjusted over a – +20 dB range determined by RDAC1. Circuit Q is adjusted by RDAC4. For more detailed reading on the state variable active filter, see Analog Devices’ application note, AN-318. 10k RDAC4 ...
Page 18
AD8400/AD8402/AD8403 0.210 (5.33) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.325 (8.25) PIN 1 0.100 (2.54) 0.300 (7.62) BSC 0.060 (1.52) 0.210 0.015 ...
Page 19
Narrow Body SOIC Package (SO-14) 0.3444 (8.75) 0.3367 (8.55 0.1574 (4.00) 0.2440 (6.20) 0.1497 (3.80) 0.2284 (5.80 PIN 1 0.0688 (1.75) 0.050 (1.27) 0.0532 (1.35) BSC 0.0098 (0.25) 0.0192 (0.49) SEATING 0.0099 (0.25) PLANE 0.0040 ...
Page 20
AD8400/AD8402/AD8403 PIN 1 0.0118 (0.30) 0.0040 (0.10) PIN 1 0.006 (0.15) 0.002 (0.05) SEATING Revision History Location Data Sheet changed from REV REV. C. Addition of new Figure ...