LPJMLB23(B32)-K40C(I)

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Product Detail

APPLICATIONS

l 25GBASE-LR 25G Ethernet

l CPRI 10

Compliance

l SFF-8431.

l IEEE802.3cc

l SFP28 MSA

l RoHS

Ordering information

Part No.	Bit Rate (Gbps)	Laser (nm)	Distance	Fiber Type	DDMI	Connector	Temp
ESJMLB23-K40C	25.78125	1270	40km	SMF	YES	LC	0℃~+70℃
ESJMLB32-K40C	25.78125	1310	40km	SMF	YES	LC	0℃~+70℃
ESJMLB23-K40I	25.78125	1270	40km	SMF	YES	LC	-40℃~+85℃
ESJMLB32-K40I	25.78125	1310	40km	SMF	YES	LC	-40℃~+85℃

I. Pin Diagram

Pin out of Connector Block on Host Board

II. Pin Descriptions

Pin	Symbol	Name/Description	Ref.
1	V_EET	Transmitter Ground (Common with Receiver Ground)	1
2	T_FAULT	Transmitter Fault.	2
3	T_DIS	Transmitter Disable. Laser output disabled on high or open.	3
4	SDA	2-wire Serial Interface Data Line	4
5	SCL	2-wire Serial Interface Clock Line	4
6	MOD_ABS	Module Absent. Grounded within the module	4
7	RS0	Rate Select 0	6
8	LOS	Loss of Signal indication. Logic “0” indicates normal operation.	5
9	RS1	Rate select 1	6
10	V_EER	Receiver Ground (Common with Transmitter Ground)	1
11	V_EER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver Non-inverted DATA out. AC Coupled
14	V_EER	Receiver Ground (Common with Transmitter Ground)	1
15	V_CCR	Receiver Power Supply
16	V_CCT	Transmitter Power Supply
17	V_EET	Transmitter Ground (Common with Receiver Ground)	1
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled.
19	TD-	Transmitter Inverted DATA in. AC Coupled.
20	V_EET	Transmitter Ground (Common with Receiver Ground)	1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TFAULT is an open collector/drain output, which is pulled up with a 4.7kΩ – 10kΩ resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm threshold. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.

3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

4. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls line low to indicate module is plugged in.

5. LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

6. Internally pulled down per SFF-8431 Rev 4.1.

III. Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Ref.
Maximum Supply Voltage	Vcc	-0.5		3.6	V
Storage Temperature	TS	-40		85	℃
Relative Humidity	RH	0		85	%

IV. Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Remark
Transmitter
Signaling rate(range)	Sr		25.7825±100ppm		GBd
Center Wavelength	λc	1260	1270	1280	nm	ESJMLB23-K40C(I)
Center Wavelength	λc	1300	1310	1320	nm	ESJMLB32-K40C(I)
Spectral Width(-20dB)	Pm			1	nm
Average Output Power	Pavg	0		6	dBm
Extinction Ratio	ER	3.5			dB
Side Mode Suppression Ratio	SMSR	30			dB
Transmitter OFF Output Power	POff			-30	dBm
Relative Intensity Noise	RIN	dB/Hz		-128	dB/Hz
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} Hit ratio 5×10-5 hits per sample.		{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}
Receiver
Signaling rate(range)	Sr		25.7825±100ppm		GBd
Center Wavelength	λc	1300	1310	1320	nm	ESJMLB23-K40C(I)
Center Wavelength	λc	1260	1270	1280	nm	ESJMLB23-K40C(I)
Receiver Sensitivity(OMA)	RSENSE			-18	dBm	1
Receiver Overload (OMA)	Pmax	-5			dBm
Receiver Reflectance	Rfl			-12	dBm
Loss of Signal Assert	P_A	-30			dBm
Loss of Signal De-assert	P_D			-21	dBm
LOS Hysteresis	P_D- P_A	0.5			dB

Note:

1. Measured at 25.78125Gb/s, ER>3.5dBm, PRBS 2³¹-1 and BER better than or equal to 5x10^-5.

V. Digital Diagnostic Memory Map

VI. Digital Diagnostic Specifications

Parameter	Unit	Accuracy
Case Temperature	℃	±3
Supply Voltage	V	±3%
Tx Bias Current	mA	±10%
Tx Optical Power	dB	±3
Rx Optical Power	dB	±3

VII. Electrical Interface Characteristics

Parameter	Symbol	Min	Type	Max	Unit	Ref.
Supply Voltage	Vcc	3.14	3.3	3.46	V
Power dissipation	Pd			1.5	W
Bite rate	BR		25.78		Gb/s
Bit Error Ratio	BER			5*10^-5
Transmitter
Input differential impedance	Rin		100			1
Differential data input swing	Vin, pp	90		450	mV
Transmit Disable Voltage	V_D	2		VccHOST	V
Transmit Enable Voltage	V_EN	Vee		Vee+0.8	V
Transmit Fault Assert Voltage	VFA	2		VccHOST	V
Transmit Fault De-Assert Voltage	VFDA	Vee		Vee+0.8	V
Receiver
Differential data output swing	Vout, pp	200		450	mV	2
LOS Fault	V_{LOS_fault}	2		VccHOST	V	3
LOS Normal	V_{LOS_norm}	Vee		Vee+0.8	V	3

Notes:

1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC.

2. Into 100Ω differential termination.

3. LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

VIII.Recommended Interface Circuit

IX. Mechanical Specifications (Unit: mm)

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contact us

Address : East of 2F, Tianmen Optical Valley Science Park,Qiaoxiang Economic development area,Tianmen, Hubei Province.
Tel : 15012662571
Email : chris.peng@talptech.com
Skype : 15012662571

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