MVL108 Single Channel High Speed Comparator

Also see MVL407

CMOS Compatible Outputs
Built-in 4.8 mV Hysteresis
High and Low Power Versions

LOW POWER

30 mW Typical
10 nsec Propagation Delay
7 ns Rise and Fall Time

HIGH SPEED

50 mW Typical
5.5 nsec Propagation Delay
2.2 ns Rise and Fall Time

ULTRA-FAST COMPARATOR FOR DISCRIMINATORS, TDCs AND WIRE CHAMBER FRONT-ENDS

The MVL108 is a single channel version of the LeCroy MVL407 (a high performance comparator with built in hysteresis), with a CMOS compatible output instead of differential ECL, and substantially reduced power require ments. The device power can be selected, either high or low power mode, as a bonding option. Small quantity prototypes are available in a 10 pin ceramic surface mount package which allows pin selection of either high or low power mode. Contact LeCroy for other packaging options.

SPECIFICATIONS

Power Mode Select Pins

	High Power	Low Power
S1	VCC	GND
S2	GND	VCC

Symbol Parameter		Min	Typ	Max	Units	Comments

ABSOLUTE MAXIMUM RATINGS

Vcc	Positive Supply Voltage			6	V
Vee	Negative Supply Voltage			-6	V
	Input Voltage			�4.0	V
	Differential Input Voltage			�3.5	V
T	Operating Temperature	0		70	�C

ELECTRICAL CHARACTERISTICS (27�C to 77�C, Vcc = +5 V, Vee = -5 V)

Ib	Input bias current			3	�A
Rin	Input resistance	20			Kohm
Cin	Input capacitance	1.2	1.6	3	pF
Vcm	Input voltage range	-2.5		2	V
Voff	Input offset voltage			�5	mV
VH	Hysteresis voltage	4.4	4.8	5.2	mV

HIGH POWER MODE

I+	Positive supply current		8.5	10.5	mA
I-	Negative supply current		1.5	2	mA
PD	Power dissipation		50	62.5	mW
tpd	Propagation delay		5.5	8.5	nsec
tr, tf	Transition time		2.2	2.7	nsec
DPR	Double pulse resolution			10	nsec
fmax	Max. toggle frequency	80			MHz
Tmin	Min. input width	5			nsec

LOW POWER MODE

I+	Positive supply current		4.3		mA
I-	Negative supply current		1.5		mA
PD	Power dissipation		29		mW
tpd	Propagation delay		10	17.3	nsec
tr, tf	Transition time		7	8.1	nsec	10 pf load
DPR	Double pulse resolution			33	nsec
fmax	Max. toggle frequency	28			MHz
Tmin	Min. input width	15			nsec

Figure 1: MVL108 Package, Pin Spacing is 0.050".