DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 64

• Manufacturer Part Number: DS1874T+
• Description: IC CTLR SFP+ ANLG LDD 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Controllerr

Specifications of DS1874T+

• Number Of Channels: 1
• Voltage - Supply: 2.85 V ~ 3.9 V
• Current - Supply: 2.5mA
• Operating Temperature: -40°C ~ 95°C
• Package / Case: 28-WFQFN Exposed Pad
• Mounting Type: Surface Mount
• Number Of Outputs: 5
• Duty Cycle (max): 50 %
• Output Voltage: 0 V to 3.9 V
• Mounting Style: SMD/SMT
• Switching Frequency: 0 KHz to 400 KHz
• Operating Supply Voltage: 2.85 V to 3.9 V
• Supply Current: 2.5 mA to 10 mA
• Maximum Operating Temperature: + 95 C
• Fall Time: 300 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 300 ns
• Synchronous Pin: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1874T+000

Table 02h, Register A2h–A3h: V CC OFFSET
Table 02h, Register A4h–A5h: MON1 OFFSET
Table 02h, Register A6h–A7h: MON2 OFFSET
Table 02h, Register A8h–A9h: MON3 FINE OFFSET
Table 02h, Register AAh–ABh: MON4 OFFSET
Table 02h, Register ACh–ADh: MON3 COARSE OFFSET
SFP+ Controller with Digital LDD Interface
Table 02h, Register AEh–AFh: INTERNAL TEMP OFFSET
64
A2h, A4h,
A6h, A8h,
A3h, A5h,
A7h, A9h,
AAh, ACh
ABh, ADh
______________________________________________________________________________________
AEh
AFh
FACTORY CALIBRATED
READ ACCESS
WRITE ACCESS
MEMORY TYPE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Allows for offset control of these voltage measurements if desired. This number is two’s complement.
Allows for offset control of temperature measurement if desired. The final result must be XORed with BB40h
before writing to this register. Factory calibration contains the desired value for a reading in degrees Celsius.
BIT 7
BIT 7
2
2
S
S
9
1
2
2
2
S
8
0
8
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
2
2
2
2
15
-1
7
7
2
2
2
2
14
-2
6
6
2
2
2
2
13
-3
5
5
2
2
2
2
12
-4
4
4
2
2
2
2
11
-5
3
3
BIT 0
BIT 0
2
2
2
2
10
-6
2
2