ADN2860-EVAL AD [Analog Devices], ADN2860-EVAL Datasheet
ADN2860-EVAL
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ADN2860-EVAL Summary of contents
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... The ADN2860 EEPROM, channel resolution, and package size conform to GBIC and SFP specifications. The ADN2860 is available × 4 mm, 24-lead LFCSP package. All parts are guaranteed to operate over the extended industrial tempera- ture range − ...
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... ADN2860 TABLE OF CONTENTS Electrical Characteristics ................................................................. 3 Electrical Characteristics ................................................................. 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Interface Descriptions.................................................................... Interface ................................................................................ 10 EEPROM Interface..................................................................... 11 2 RDAC I C Interface.................................................................... 12 Theory of Operation ...................................................................... 15 Linear Increment and Decrement Commands ...................... 15 Logarithmic Taper Mode Adjustment (±6 dB/step) .............. 15 Using Additional Internal Nonvolatile EEPROM ...
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... Dx = 0x1FF 0.1 −15 +15 −0.5 +0.5 −2.0 +2.0 −0.5 +0.5 −2.0 +2.0 15 −1/−2.75 0/0 0/0 1/2 0.01 1 2.4 2.1 0 ADN2860 Unit LSB LSB LSB LSB LSB ppm/°C Ω Ω LSB LSB LSB LSB ppm/°C LSB LSB µ µA µA ...
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... ADN2860 Parameter Input Leakage Current (Excluding WP and A0) 5 Input Capacitance POWER SUPPLIES Single-Supply Power Range Dual-Supply Power Range Positive Supply Current Negative Supply Current EEMEM Data Storing Mode Current EEMEM Data Restoring Mode Current 7 Power Dissipation 5 Power Supply Sensitivity 1 Typical represents average readings at 25°C, V ...
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... kHz. 0.05 4/ kΩ/250 kΩ 25°C. 14/45 A −80 −72 1.3 600 1.3 0.6 600 100 600 26 360 360 540 100 100 ADN2860 Max Unit kHz % µs nV√ 400 kHz µs ns µs 50 µs ns 900 ns ns 300 ns 300 µ ...
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... ADN2860 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to GND GND GND Intermittent Continuous Digital Inputs and Output Voltage to GND 2 Operating Temperature Range Maximum Junction Temperature (T max) ...
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... C Device Address 1 for RDAC AD0 I C Device Address 0 for RDAC. PIN 1 INDICATOR RESET 1 18 TEST2 (NC) 17 TEST3 (NC AD2860 16 V SCL SDA 4 TOP VIEW 14 W0 DGND 5 (Not to Scale CONNECT Figure 3. Pin Configuration Rev Page ADN2860 ...
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... ADN2860 TYPICAL PERFORMANCE CHARACTERISTICS 1 –40°C, +25°C, +85°C SUPERIMPOSED 0.8 DD 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1 128 192 256 320 CODE (DECIMAL) Figure 4. INL—9-Bit RDAC 1. –40°C, +25°C, +85°C SUPERIMPOSED A 1. 1.00 0.75 0.50 0.25 0 –0.25 –0.50 –0.75 –1.00 –1.25 –1.50 ...
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... T = 25°C 100 448 512 1 10 Figure 15. Supply Current vs. Clock Frequency Rev Page ADN2860 DD 128 192 256 320 384 448 CODE (DECIMAL 2.7V 2. 100 120 TEMPERATURE (°C) Figure 14 ...
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... ADN2860 INTERFACE DESCRIPTIONS INTERFACE All control and access to both EEPROM memory and the RDAC registers are conducted via a standard 2-wire I Figure 2 shows the timing characteristics of the I Figure 16 and Figure 17 illustrate standard transmit and receive 2 bus signals in the I C interface. These figures use the following legend: ...
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... I interface is enabled so, execute I sending a start condition, followed by the EEPROM slave address plus the desired R/ W bit. If the ADN2860 I responds with an ACK, the write cycle is complete and the interface is ready to proceed with further operations. ...
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... ADN2860 A random read operation is shown in Figure 21. This operation changes the address counter to the specified memory address by performing a dummy write and then performing a read operation beginning at the new address counter location. 2 RDAC I C INTERFACE RDAC SLAVE ADDRESS ...
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... EEPROM Interface section, is required to determine whether the write cycle is complete. RDAC Read The ADN2860 provides two RDAC read operations. The first, shown in Figure 23, reads the contents of the current RDAC address counter. Figure 24 illustrates the second read operation, which allows users to specify which RDAC register to read by ...
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... ADN2860 RDAC Shortcut Commands Eleven shortcut commands are provided for easy manipulation of RDAC registers and their corresponding EEPROM memory locations. These commands are shown in Table 9. A more detailed discussion about the RDAC shortcut commands can be found in the Theory of Operation section. The interface for issuing an RDAC shortcut command is shown in Figure 25 ...
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... Incrementing the wiper position doubles the RDAC register value, whereas decrementing by −6 dB halves it. Internally, the ADN2860 uses a shift register to shift the bits left and right to achieve a logarithmic increment or decrement. Nonideal ±6 dB step adjustment occurs under certain conditions. ...
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... Supply signals on Terminals W and B that exceed V internal forward-biased diodes of the ADN2860. The ground pin of the ADN2860 is used as a digital ground SDA reference and needs to be tied to the common ground of the SCL PCB ...
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... The patent pending RDAC contains a string of equal resistor segments with an array of analog switches. The switches together act as the wiper connection. The ADN2860 has two RDACs with 512 connection points, allowing it to provide better than 0.2% progammability resolution. The ADN2860 also contains a third RDAC with 128-step resolution ...
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... Each LSB of voltage is equal to the voltage applied across the A and B terminals divided by the 2 potentiometer divider. Since the ADN2860 can operate from dual supplies, the general equations defining the output voltage at V ground for any given input voltages applied to the A and B terminals are as follows: ...
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... APPLICATIONS LASER DIODE DRIVER (LDD) CALIBRATION The ADN2860 can be used with any laser diode driver. Its high resolution, compact footprint, and superior temperature drift characteristics make it ideal for optical parameter setting. The ADN2841 is a 2.7 Gbps laser diode driver that uses a unique control algorithm to manage both the laser average power and extinction ratio after initial factory calibration ...
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... PLANE ORDERING GUIDE Temperature Model Range 1 ADN2860ACPZ25-RL7 −40°C to +85°C 1 ADN2860ACPZ250-RL7 −40°C to +85°C ADN2860-EVAL Pb-free part. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 4.00 BSC SQ 0.60 MAX 0.50 BSC 3.75 ...