MITSUMI
IC for XO MM1424, MM1624
IC for XO
Monolithic IC MM1424, MM1624 Series
Outline
This is a low current consumption, low operating voltage XO IC with Colpitz oscillation circuit. Smaller size is
achieved by the on-chip bias circuit and Colpitz oscillation capacitor.
Features
1. Low current consumption.
1.5mA max. (Vcc = 2.8V)
2. Low power supply operating voltage.
Vcc = 2.3 to 3.3V
3. On-chip Colpitz oscillation capacitor On-chip bias resistor.
4. Low phase noise.
-140dBc (@1kHz)
5. Ultra-small package type.
Package
SC-82 (MM1424CUXX)
MCSP-4A (MM1424CCXX)
WLCSP-4A (MM1624CLXX)
Applications
Pin Assignment
1. Crystal oscillators
2. VCXO
3. TCXO
MITSUMI
1
2
4
3
SC-82
(TOP VIEW)
1
X'tal
2
GND
3
V
OUT
4
V
CC
1
4
2
3
MCSP-4A
(TOP VIEW)
1
GND
2
X'tal
3
V
CC
4
V
OUT
1
4
2
3
WLCSP-4A
(TOP VIEW)
1
X'tal
2
GND
3
V
OUT
4
V
CC
MM1424CUXX
MM1424CCXX
MM1624CLXX
MITSUMI
IC for XO MM1424, MM1624
MITSUMI
Electrical Characteristics
(V
CC
=2.7V, Ta=252C, Load : 2k
// 10pF, fosc=26MHz unless otherwise specificd)
Absolute Maximum Ratings
(Ta=25C)
Recommended Operating Conditions
Pin Description
Item
Symbol
Ratings
Unit
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-30~+80
C
Supply voltage
V
CC
max.
5.5
V
Input voltage
V
IN
max.
0 <
= V
IN
<
= V
CC
V
150(MM1424CUXX)
Power dissipation
Pd
180(MM1424CCXX)
*
mW
220(MM1624CLXX)
*
Item
Symbol
Ratings
Unit
Operating temperature
T
OPR
-30~+80
C
Supply voltage
V
OP
2.3~3.3
V
Operating frequency
F
OPR
10~26
mHz
Note
*
: Assembled on PC board.
Pc board dimensions : 80 20mm, t=0.8mm, (MM1424CCXX)
Material : Glass epoxy 110 40mm, t=0.8mm, 4 stratum (MM1624CLXX)
Note
*
: The definition of the operation at the recommended operating conditions is to
oscillate.
Item
Symbol
Measurement conditions
Min. Typ. Max. Unit
Current consumption
Icc
V
CC
=2.8V
1.3
1.5
mA
Output frequency
F
O
*
1
-30
0
30
ppm
Output voltage
V
OUT
V
CC
=2.6V
0.8
1.05
V
Duty ratio
Duty
V
CC
=2.6~2.8V
*
2
40
60
%
Negative resistance
*
3
R
N
V
IN
=0.1Vrms, 26MHz
-100 -150
Frequency stability-supply voltage variation
*
3
f-V
CC
V
CC
=2.7V0.1V
-0.2
0
0.2
ppm
Frequency stability-load variation
*
3
f-L
O
R
L
=2k
10% C
L
=10pF10%
-0.3
0
0.3
ppm
Note1
*
1: Output frequency satisfies the results measured by the correlation test boxes.
Note2
*
2: Duty ratio is measured at the center of Vp-p.
Note3
*
3: The items of
*
3 are only guaranteed by the desigh of the circuit.
Pin No
Pin name
Functions
MM1424CUXX MM1424CCXX MM1624CLXX
1
2
1
X'tal
X'tal pin
2
1
2
GND
GND
3
4
3
V
OUT
Output pin
4
3
4
V
CC
Supply voltage
MITSUMI
IC for XO MM1424, MM1624
MITSUMI
This load capacity (10pF) contains a capacity of a
probe.
Measuring Circuit
V
CC
A
MM1424
4
3
1
2
10000pF
10000pF
10pF
10pF
TP
47
2k
X'tal
26MHz
V
CC
A
MM1424
3
4
2
1
10000pF
10000pF
10pF
10pF
TP
47
2k
X'tal
26MHz
V
CC
A
MM1624
4
3
1
2
10000pF
10000pF
10pF
10pF
TP
47
2k
X'tal
26MHz
MM1424CUXX
MM1424CCXX
MM1624CLXX
This load capacity (10pF) contains a capacity of a
probe.
This load capacity (10pF) contains a capacity of a
probe.
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