AD8402 Analog Devices, AD8402 Datasheet
AD8402
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AD8402 Summary of contents
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... The AD8400 is available in both the SO-8 surface mount and the 8-lead plastic DIP package. The AD8402 is available in both surface mount (SO-14) and the 14-lead plastic DIP package, while the AD8403 is available in a narrow body 24-lead plastic DIP and the 24-lead surface mount package ...
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... AD8400/AD8402/AD8403–SPECIFICATIONS 10 k VERSION ELECTRICAL CHARACTERISTICS 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 VRs Resolution 4 Integral Nonlinearity 4 Differential Nonlinearity Voltage Divider Tempco ...
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... B e _50K kHz NWB WB e _100K kHz NWB –3– AD8400/AD8402/AD8403 = + – +85 C unless Min Typ Max –1 1/4 +1 –2 1 100 130 ...
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... AD8400/AD8402/AD8403–SPECIFICATIONS 1 k VERSION ELECTRICAL CHARACTERISTICS 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 VRs Resolution 4 Integral Nonlinearity 4 Differential Nonlinearity Voltage Divider Temperature Coefficent ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD8400/AD8402/AD8403 feature proprietary ESD protection circuitry, perma- nent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... C to +85 C AD8403AN1 X4/1 - +85 C AD8403AR1 X4/1 - +85 C AD8403ARU1 X4 Plastic DIP Small Outline Thin Shrink SO. The AD8400, AD8402 and the AD8403 contain 720 transistors. Table I. Serial Data Word Format ADDR Package Package Description Option PDIP-8 N ...
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... CLK Serial Clock Input, positive edge triggered 6 V Positive power supply, specified for operation DD at both +3 V and + Wiper RDAC, addr = Terminal A RDAC AD8402 PIN DESCRIPTIONS Pin Name Description 1 AGND Analog Ground Terminal B RDAC # Terminal A RDAC #2 ...
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... AD8400/AD8402/AD8403–Typical Performance Characteristics + 128 160 192 224 256 CODE – Decimal Figure 2. Wiper to End Terminal Resistance vs. Code + – + –0.5 – 128 160 192 224 256 DIGITAL INPUT CODE – ...
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... TIME 500ns/DIV Figure 12. One Position Step Change at Half-Scale (Code OUTPUT INPUT TIME = 5 s/DIV Figure 15. Large Signal Settling Time V OUT (50mV/DIV) TIME 200ns/DIV Figure 18. Digital Feedthrough vs. Time –9– AD8400/AD8402/AD8403 6 CODE = –6 40 –12 20 –18 10 –24 08 –30 04 –36 02 – +25 C – ...
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... AD8400/AD8402/AD8403 SEE TEST CIRCUIT 33 CODE = + + 10k R = 50k R = 100k 10 100 1k 10k 100k 1M FREQUENCY – Hz Figure 20. Normalized Gain Flat- ness vs. Frequency 700kHz 10k –3dB 0 – 71kHz 100k –3dB –12 – 125kHz 50k –3dB – 100mV rms –30 ...
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... V+ W PSRR (dB) = 20LOG PSS (%/%) = ––––––– Figure 32. Power Supply Sensitivity Test Circuit (PSS, PSRR) REV. B Parametric Test Circuits–AD8400/AD8402/AD8403 Figure 33. Inverting Programmable Gain Test Circuit I W Figure 34. Noninverting Programmable Gain Test Circuit – [V ...
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... Bits B7 through B0: VR The single-channel AD8400 requires The dual- channel AD8402 requires settings can be changed one at a time in random sequence. The serial clock running at 10 MHz makes it possible to load all 4 VRs in under 4 s (10 4 100 ns) for the AD8403 ...
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... DIGITAL INTERFACING The AD8400/AD8402/AD8403 contains a standard SPI com- patible three-wire serial input control interface. The three inputs are clock (CLK), CS and serial data input (SDI). The positive- edge sensitive CLK input requires clean transitions to avoid clocking incorrect data into the serial input register ...
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... CS, SDI, SDO, RS, SHDN, CLK. The digital input ESD protection allows for mixed power supply applications where +5 V CMOS logic can be used to drive an AD8400/AD8402 or AD8403 operating from power sup- ply. The analog pins are protected with a 20 resistor and parallel Zener, see Figure 41b. ...
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... Figure 33 shows one channel of the AD8402 connected in an inverting program- mable gain amplifier circuit. The virtual ground is set at +2.5 V which allows the circuit output to span a 2.5 volt range with respect to virtual ground ...
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... AD8400/AD8402/AD8403 ACTIVE FILTER One of the standard circuits used to generate a low-pass, high- pass or bandpass filter is the state variable active filter. The digi- tal potentiometer allows full programmability of the frequency, gain and Q of the filter outputs. Figure 44 shows the filter cir- cuit using a +2.5 V virtual ground, which allows a 2.5 V and output swing ...
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... PIN 1 0.006 (0.15) 0.002 (0.05) 0.0433 (1.10) MAX 8 0.0118 (0.30) 0.0256 0 SEATING 0.0079 (0.20) (0.65) 0.0075 (0.19) PLANE BSC 0.0035 (0.090) –17– AD8400/AD8402/AD8403 8-Lead SOIC (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.2440 (6.20 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0196 (0.50) 0.0532 (1.35) 0.0099 (0.25) 8 0.0500 0.0192 (0.49) 0 0.0098 (0.25) 0.0500 (1.27) (1.27) 0.0138 (0.35) PLANE BSC ...
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... AD8400/AD8402/AD8403 PIN 1 0.210 (5.33) MAX 0.160 (4.06) 0.115 (2.92) PIN 1 0.0118 (0.30) 0.0040 (0.10) 24-Lead Thin Surface Mount TSSOP Package (RU-24) 0.006 (0.15) 0.002 (0.05) SEATING PLANE 24-Pin Narrow Body Plastic DIP Package (N-24 0.280 (7.11) 0.240 (6.10 1.275 (32.30) 1.125 (28.60) 0.015 (0.38) MIN 0.130 (3.30) MIN 0.022 (0.558) 0.100 (2.54) 0.070 (1.77) SEATING 0.014 (0.356) BSC 0 ...
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