AK2574VB AKM [Asahi Kasei Microsystems], AK2574VB Datasheet
AK2574VB
Related parts for AK2574VB
AK2574VB Summary of contents
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... EEPROM for storing LD characteristics and user information. The AK2574 has an APC FF (Feed-forward) function that supplies a programmed current in response to the temperature. All program and operational functions can be set through the I on-chip EEPROM. Product Number AK2574VB Block Diagram SEL data_ff DUTY_ FF AND ADJ CLK_ ...
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Pin Description ･･･････････････････････････････････････････････････････････････････････････････････ Ⅱ. Absolute Maximum Rating ･････････････････････････････････････････････････････････････････････････ Ⅲ. Recommend Operation Conditions Ⅳ. Electrical Chracteristics ････････････････････････････････････････････････････････････････････････････ ･･････････････････････････････････････････････････････････････････････････ 1. Power Consumption ･･･････････････････････････････････････････････････････････････････････････････････････ 2. EEPROM 3. Digital Input / Output DC Characteristics I/F AC Characteristics ･････････････････････････････････････････････････････････････････････････････････ ...
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Current Address Read 5.2.4 Random Read 5.2.5 Sequential Read 5.2.6 Data Change 5.2.7 Start / Stop Condition ･････････････････････････････････････････････････････････････････････････････････ 5.3 EEPROM ･･･････････････････････････････････････････････････････････････････････････････ 5.4 Register ････････････････････････････････････････････････････････････････････････････ 6. Operation Mode 6.1 Self-running Mode 6.2 Adjustment Mode ･･･････････････････････････････････････････････････････････････････････････ 6.3 EEPROM Mode ･･････････････････････････････････････････････････････････････････････････ 6.4 ...
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The symbol of I/O column shows below. Ai: Analog input, Ai_l: LVPECL input, Ao: Analog output Di: Digital input, Di_pu: Digital input with pulled-up resistor, Do: Digital output, Dio_od: Digital input / output (open drain) PWR: Power or VSS PIN# ...
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Pin Description (Continued) PIN# Symbol Function 27, 28 IMODN Negative MOD current output. Sinks MOD current when input data is “L”. 29, 30 IMOD Positive MOD current output. Sinks up to 85mA (typ) MOD current when input data is “H”. ...
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Item Supply Voltage GND Input voltage Input Current Storage Temperature Stress beyond “Absolute Maximum Range” may cause permanent damage to the device. Note 1: Except Data retention. Data retention is prescribed at section-Ⅳ 2. EEPROM. Item Symbol Operating Ambient Power ...
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Digital Input / Output DC Characteristics Item Symbol Input High Level VIH Input Low Level VIL Output High Level VOH Output Low Level VOL Input Leakage Current 1 IL1 Input Leakage Current 2 IL2 Note 1: except DATAP, DATAN, ...
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LVPECL I/F (CLKP, CLKN, DATAP, DATAN, BRSTP, BRSTN) Item Single-ended Input Voltage Swing Common Voltage BIAS Voltage Input Impedance Vamp Vcom CLKP/CLKN DATAP/DATAN BRSTP/BRTSTN BRST Timing (SEL=”L”, without CLK) 6. Item Symbol Delay Time of BRST “L” → “H” ...
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BRST Timing (SEL=”H”, with CLK) Item Symbol DATA Set-up Time DATA Hold Time BRST Set-up Time BRST Hold Time Tdr-bd Delay Time of BRST “L” → “H” to First DATA Delay Time of Last DATA to IBIAS OFF IBIAS ...
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I-DAC2 Item Condition Resolution Maximum Output IBIAS = VDD – 1.8V Current R_DAC2=FFh Minimum Output IBIAS = VDD Current 1 1 R_DAC2 5 Minimum Output IBIAS = VDD Current 2 R_DAC2 = 0 Current Supply with IBIAS = VDD ...
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ADC Item Condition Resolution Maximum Input Voltage Minimum Input Voltage DNL 16. Power On Reset Item Condition Detect Voltage When detects the voltage drop, the AK2574 goes into shutdown condition. 17. On-chip Oscillator Item Condition Clock Frequency <MS0266-E-00> min ...
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... Package Type: 48 pin BCC++ (2) Marking Information: (a) PIN#1 Indication: ○ (b) Logo: AKM (c) Marking Code: AK2574VB (d) Date Code: YYWWXXX (7 digit) (3) Package Outline 7.0±0 <MS0266-E-00> Ⅴ. Package Information AKM AK2574VB YYWWXXX 25 25 5.1 5.5±0.06 "A" "C" "B" Part "A" Part ...
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Parameter Notation 1.1 Parameter Definition In the AK2574 Circuit Description, in order to distinguish various pre-set parameter sources from EEPROM, Registers or Device pins, “Identifier - Main name” notation is used as shown in Table 1-1. For ease of ...
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LD Driver Fig 2-1 illustrates the block diagram of LD driver function. The AK2574 LD driver contains a Driver part, an APC part, a LVPECL I/F part and a programmable duty adjustment. The driver part is composed of 156M ...
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Table 2-2 LVPEL Interface characteristics Item Symbol Single-ended Input |Vamp| Voltage Swing Common Voltage Vcom BIAS Voltage Vbias Input Impedance Zin Set-up Time tsu Hold Time th Note 1: This parameter is characterized and is not 100% tested. Fig 2-2 ...
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Fig 2-5 Input timing example with CLK BRSTP - BRSTN CLKP- CLKN 2 CLK (typ) DATAP - DATAN 2.2.3 Input Timing (SEL=”L”, in the case of direct DATA) AK2574 operates without CLK when SEL=”L”. DATA input should be 12.8ns or ...
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APC AK2574 provides the APC (Auto Power Control) function for the burst mode application. APC is composed of a programmable BIAS and MOD currents in response to the temperature (APC_FF), an on-chip temperature sensor, and 2 current DACs (I-DAC1 ...
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Table 2-6 I-DAC2 Characteristics Item Condition Resolution Maximum Output IBIAS = VDD – 1.8V Current R_DAC2=FFh Minimum Output IBIAS = VDD Current 1 1 R_DAC2 5 Minimum Output IBIAS = VDD Current 2 R_DAC2 = 0 1 LSB Current Step ...
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Table 2-8 AD code and detected temperature [typ] AD code Temp [℃] AD code 0 140.1 1 138.6 2 137.1 3 135.6 4 134.1 5 132.6 6 131.1 7 129.6 8 128.2 9 126.7 10 125.2 11 123.7 12 122.2 ...
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Alarm AK2574 has 2 alarm functions as shown in Table 3-1. Table 3-1 Alarm function ALM Detection condition TXACT When the PDIN voltage (monitor PD current) is beyond the reference voltage (txact_ref). TXACT is kept once TXACT detection until ...
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Table 3-2 PDIN capacitance (CPDIN) Item PDIN Capacitance (CPDIN) Table 3-3 TXACT Reference Voltage RE_DAC_TXACT min 011 0.86 010 0.76 001 0.66 000 0.56 100 0.46 101 0.36 110 0.26 111 0.16 3.2 CLKALM CLKALM is detected when input CLK ...
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5.1 Memory Map Table 5-1 shows the EEPROM / Register address map. Access to memory (EEPROM / registers) is done via the I I/F format. WP (Write Protect) may limit the access of memory ...
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Read/Write Operation 5.2.1 Byte Write SDA Device Device T Address-1 Address 5.2.2 Page Write AK2574 is capable of 16-byte page write SDA Address A ...
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Data Change The SDA pin is normally pulled high with 4.7k to 10kΩ. Data on the SDA pin may change only during SCL low time period. Data changes during SCL high periods will indicate a start or stop condition. ...
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Table 5-3 EEPROM Address MAP Device Address DATA (D7-D0) Address A0h User Area 00h (0) ～ (1kbit) 7Fh (127) A0h 80h (128) ～ No Memory FFh (255) A2h 00h (0) ～ FFh (255) A4h 00 h(0) ～ E_DAC1_TC Temperature data ...
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Register Register memory map is shown in Table 5-6 and 5-7. Register access is limited with WP pin and Operation mode (refer to Fig 6-1, for more information). Table 5-6 Register (Device Address = A8h) Register Address Function R_VREFTRIM[7:4] ...
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Operation Mode The AK2574 has 3 operating modes: Self-running, Adjustment and EEPROM mode. 6.1 Self-running Mode Self-running mode is ready for normal operation after all adjustments are completed. In this mode, temperature detection, EEPROM access and feeding current are ...
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Module Adjustment Example Table 7-1 shows the module adjustment example. Table 7-1 Module Adjustment Example No. Item Adjustment mode 2 Continuous operation 3 LD current adjustment 4 Duty adjustment 5 TXACT adjustment 6 Verification of TXACT ...
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... 4.7Ω～10Ω C1=C2=0.1uF +/- 50% (under operating temperature) C11=C13=C15=C17=C19=C21 = 0.1uF C12=C14=C16=C18=C20=C22 25 C16 VSSMD C15 VDDMD VDDDR C13 VSSDR AK2574VB TEST2 TEST3 TEST4 R131 TEST5 BRSTP BRSTN R132 TEST6 Open 13 LVPECL I/F (see below) For full access: GND For write protection: Open or VDD DATA & ...
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These products and their specifications are subject to change without notice. Before considering any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized distributor concerning their current status. AKM assumes no liability for infringement ...