ADA4004-4ARZ-R7
Analog Devices Inc.
IC OPAMP GP 4 CIRCUIT 14SOIC
Nan stok4072 pcs
-
Tape & Reel (TR)
ADA4004
30 V
10 V
-
-
-
-
40 µV
40 nA
12 MHz
-
2.7V/µs
10 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
-
iPolar®
-
-
RFQ
MAX4386EESD
Analog Devices Inc./Maxim Integrated
IC OPAMP VFB 4 CIRCUIT 14SOIC
Nan stok17660 pcs
230 MHz
Bulk
-
5.5 V
4.5 V
-
-
-
-
200 µV
6.5 µA
-
-
450V/µs
55 mA
Voltage Feedback
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
5.5mA (x4 Channels)
-
-
-
RFQ
LMH6626MAX
Texas Instruments
IC OPAMP VFB 1.3GHZ 8SOIC
Nan stok9690 pcs
85MHz
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMH6626
Tape & Reel (TR)
100µV
13µA
1.3GHz
5 V ~ 12 V, ±2.5 V ~ 6 V
360 V/µs
80mA
Voltage Feedback
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
12mA
-
Voltage Feedback Amplifier 2 Circuit 8-SOIC
-
RFQ
OPA2353EA
Texas Instruments
OPERATIONAL AMPLIFIER, 2 FUNC, 1
Nan stok8310 pcs
-
Bulk
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
-
-
RFQ
HA2-5135/883
Intersil
IC OPAMP GP 1 CIRCUIT TO99-8
Nan stok5130 pcs
-
Bulk
-
30 V
30 V
-
-
-
-
75 µV
4 nA
-
-
-
-
General Purpose
1
TO-99-8
TO-99-8 Metal Can
-
Through Hole
-55°C ~ 125°C
-
Military, MIL-STD-883
-
-
RFQ
LM348D
onsemi
IC OPAMP GP 4 CIRCUIT 14SOIC
Nan stok83220 pcs
-
Tube
-
36 V
8 V
-
-
-
-
1 mV
30 nA
1 MHz
-
0.5V/µs
25 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C (TA)
2.4mA (x4 Channels)
-
-
-
RFQ
LT1638HS8#PBF
Linear Technology
OPERATIONAL AMPLIFIER, 2 FUNC, 3
Nan stok4000 pcs
-
Bulk
-
44 V
2.5 V
-
-
-
-
250 µV
250 nA
1.2 MHz
-
0.4V/µs
40 mA
General Purpose
2
8-SO
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
205µA (x2 Channels)
-
-
-
RFQ
LMC6036IMX
Texas Instruments
IC CMOS 4 CIRCUIT 14SOIC
Nan stok35382 pcs
-
Bulk
-
15.5 V
2 V
-
-
-
-
500 µV
0.02 pA
1.4 MHz
-
1.5V/µs
8 mA
CMOS
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Differential, Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1.3mA (x4 Channels)
Automotive, AEC-Q100
-
-
RFQ
OPA1677DBVT
Texas Instruments
LOW DISTORTION (-120 DB), LOW NO
Nan stok69400 pcs
-
Tape & Reel (TR)
-
36 V
4.5 V
-
-
-
-
500 mV
10 pA
16 MHz
-
9V/µs
50 mA
General Purpose
1
SOT-23-5
SC-74A, SOT-753
Push-Pull
Surface Mount
-40°C ~ 125°C (TA)
2mA
-
-
-
RFQ
ADA4861-3YRZ-RL
Analog Devices Inc.
IC OPAMP CFA 3 CIRCUIT 14SOIC
Nan stok7810 pcs
370 MHz
Tape & Reel (TR)
ADA4861
12 V
5 V
-
-
-
-
100 µV
2.9 µA
-
-
680V/µs
100 mA
Current Feedback
3
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 105°C
17.9mA
-
-
-
RFQ
AD8277ARZ
Analog Devices Inc.
IC INST AMP 2 CIRCUIT 14SOIC
Nan stok14491 pcs
-
Tube
AD8277
36 V
2 V
-
-
-
-
100 µV
-
550 kHz
-
1.1V/µs
15 mA
Instrumentation
2
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
-
-
-
-
RFQ
INA186A4QDDFRQ1
Texas Instruments
AEC-Q100, 40-V, BIDIRECTIONAL, H
Nan stok56530 pcs
33 kHz
Tape & Reel (TR)
-
5.5 V
1.7 V
-
-
-
-
3 µV
500 pA
-
-
0.3V/µs
-
Current Sense
1
TSOT-23-8
SOT-23-8
Rail-to-Rail
Surface Mount
-40°C ~ 125°C (TA)
48µA
Automotive, AEC-Q100
-
-
RFQ
OPA549T
Texas Instruments
IC POWER 1 CIRCUIT TO220-11
Nan stok2573 pcs
-
Tube
OPA549
60 V
8 V
-
-
-
-
1 mV
100 nA
900 kHz
-
9V/µs
10 A
Power
1
TO-220-11
TO-220-11 (Formed Leads)
-
Through Hole
-40°C ~ 85°C
26mA
-
-
-
RFQ
LM6134BIN
Texas Instruments
IC OPAMP GP 11MHZ RRO 14DIP
Nan stok7000 pcs
-
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LM6134
Tube
1.7mV
125nA
11MHz
1.8 V ~ 24 V, ±0.9 V ~ 12 V
14 V/µs
3.5mA
General Purpose
4
14-DIP
14-DIP (0.300", 7.62mm)
Rail-to-Rail
Through Hole
-40°C ~ 85°C
390µA
-
General Purpose Amplifier 4 Circuit Rail-to-Rail 14-DIP
-
RFQ
PGA116AIPW
Texas Instruments
IC OPAMP PGA 1 CIRCUIT 20TSSOP
Nan stok14855 pcs
10 MHz
Tube
PGA116
5.5 V
2.2 V
-
-
-
-
75 µV
1.5 nA
-
-
8V/µs
60 mA
Programmable Gain
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
330µA
-
-
-
RFQ
LF353M
Texas Instruments
LF353-N WIDE BANDWIDTH DUAL JFET
Nan stok40080 pcs
-
Bulk
-
36 V
10 V
-
-
-
-
5 mV
50 pA
4 MHz
-
13V/µs
-
J-FET
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
3.6mA (x2 Channels)
-
-
-
RFQ
TLC27L1BIS-13
Diodes Incorporated
IC CMOS 1 CIRCUIT 8SO
Nan stok90960 pcs
-
Tape & Reel (TR)
TLC27
16 V
4 V
-
-
-
-
240 µV
0.6 pA
85 MHz
-
0.04V/µs
30 mA
CMOS
1
8-SO
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
10µA
-
-
-
RFQ
MAX4019EEE
Analog Devices Inc./Maxim Integrated
IC BUFFER 3 CIRCUIT 16QSOP
Nan stok6590 pcs
200 MHz
Tube
MAX4019
11 V
3.15 V
-
-
-
-
4 mV
5.4 µA
140 MHz
-
600V/µs
120 mA
Buffer, Voltage Feedback
3
16-QSOP
16-SSOP (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
5.5mA (x3 Channels)
-
-
-
RFQ
OPA602AU/2K5E4
Texas Instruments
HIGH-SPEED PRECISION DIFET OPERA
Nan stok4395 pcs
-
Tape & Reel (TR)
-
36 V
10 V
-
-
-
-
1 mV
2 pA
6.5 MHz
-
35V/µs
20 mA
J-FET
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Single-Ended
Surface Mount
-25°C ~ 85°C
3mA
Difet®
-
-
RFQ
5962-8972101GC
Intersil
IC OPAMP GP 1 CIRCUIT TO99-8
Nan stok538 pcs
-
Bulk
-
30 V
8 V
-
-
-
-
2 mV
50 nA
20 MHz
-
150V/µs
35 mA
General Purpose
1
TO-99-8
TO-99-8 Metal Can
-
Through Hole
-55°C ~ 125°C
4.5mA
-
-
-
RFQ
TL081HIDBVR
Texas Instruments
IC OPAMP JFET 1 CIRCUIT SOT23-5
Nan stok360300 pcs
-
Tape & Reel (TR)
-
40 V
4.5 V
-
-
-
-
1 mV
1 pA
5.25 MHz
-
20V/µs
-
J-FET
1
SOT-23-5
SC-74A, SOT-753
Push-Pull
Surface Mount
-40°C ~ 125°C (TA)
1.4mA
-
-
-
RFQ
LMC6081IM
Texas Instruments
IC CMOS 1 CIRCUIT 8SOIC
Nan stok30837 pcs
-
Bulk
-
15.5 V
4.5 V
-
-
-
-
150 µV
0.01 pA
1.3 MHz
-
1.5V/µs
34 mA
CMOS
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
550µA
LMC®
-
-
RFQ
LM324ADR
UMW
SOP-14 OPERATIONAL AMPLIFIER ROH
Nan stok337250 pcs
-
Tape & Reel (TR)
-
30 V
-
-
-
-
-
2 mV
20 nA
-
-
-
30 mA
General Purpose
4
14-SOP
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-30°C ~ 85°C
1.1mA
-
-
-
RFQ
LMC660CN
Texas Instruments
IC CMOS 4 CIRCUIT 14DIP
Nan stok11980 pcs
-
Tube
-
15.5 V
4.75 V
-
-
-
-
1 mV
0.002 pA
1.4 MHz
-
1.1V/µs
40 mA
CMOS
4
14-PDIP
14-DIP (0.300", 7.62mm)
Push-Pull, Rail-to-Rail
Through Hole
0°C ~ 70°C
1.5mA (x4 Channels)
LMC®
-
-
RFQ
ADA4177-4ARZ-R7
Analog Devices Inc.
IC OPAMP GP 4 CIRCUIT 14SOIC
Nan stok4105 pcs
6 MHz
Tape & Reel (TR)
ADA4177
36 V
5 V
-
-
-
-
2 µV
300 pA
3.5 MHz
-
1.5V/µs
25 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
500µA (x4 Channels)
-
-
-
RFQ
LM124AJ
Texas Instruments
LM124A QUADRUPLE OPERATIONAL AMP
Nan stok14020 pcs
-
Bulk
-
30 V
3 V
-
-
-
-
2 mV
50 nA
1.2 MHz
-
0.5V/µs
20 mA
General Purpose
4
14-CDIP
14-CDIP (0.300", 7.62mm)
Differential
Through Hole
-55°C ~ 125°C (TA)
1.4mA (x4 Channels)
Automotive, AEC-Q100
-
-
RFQ
OPA363IDBVRG4
Texas Instruments
IC OPAMP GP 7MHZ RRO SOT23-6
Nan stok36971 pcs
-
-
-
-
-
2 (1 Year)
Lead free / RoHS Compliant
OPA363
Tape & Reel (TR)
500µV
1pA
7MHz
1.8 V ~ 5.5 V, ±0.9 V ~ 2.75 V
5 V/µs
85mA
General Purpose
1
SOT-23-6
SOT-23-6
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1.1mA
-
General Purpose Amplifier 1 Circuit Rail-to-Rail SOT-23-6
20 Weeks
RFQ
M5218AFP#EF0Z
Renesas Electronics America Inc
DUAL OPERATIONAL AMPLIFIER
Nan stok81670 pcs
-
Bulk
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
-
-
RFQ
LM346M
Texas Instruments
IC OPAMP GP 4 CIRCUIT 16SOIC
Nan stok14490 pcs
-
Bulk
-
44 V
3 V
-
-
-
-
500 µV
50 nA
1.2 MHz
-
0.4V/µs
20 mA
General Purpose
4
16-SOIC
16-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
1.4mA (x4 Channels)
-
-
-
RFQ
AD208AY
Analog Devices Inc.
IC OPAMP ISOLATION 1 CIRC 10SIP
Nan stok7890 pcs
-
Tube
AD208
15.75 V
14.25 V
-
-
-
-
250 µV
10 nA
4 kHz
-
0.1V/µs
2 mA
Isolation
1
10-SIP
38-SIP, 10 Leads, Offset Leads
-
Through Hole
-40°C ~ 85°C
-
-
-
-
RFQ
EL5411IRE
Renesas Electronics America Inc
IC OPAMP VFB 4 CIRCUIT 14HTSSOP
Nan stok16600 pcs
60 MHz
Tube
EL5411
16.5 V
4.5 V
-
-
-
-
3 mV
2 nA
32 MHz
-
75V/µs
65 mA
Voltage Feedback
4
14-HTSSOP
14-TSSOP (0.173", 4.40mm Width) Exposed Pad
Rail-to-Rail
Surface Mount
-40°C ~ 85°C (TA)
10mA (x4 Channels)
EL5411
-
-
RFQ
MC3403NSR
Texas Instruments
IC OPAMP GP 4 CIRCUIT 14SO
Nan stok75170 pcs
-
Tape & Reel (TR)
MC3403
30 V
5 V
-
-
-
-
2 mV
200 nA
1 MHz
-
0.6V/µs
30 mA
General Purpose
4
14-SO
14-SOIC (0.209", 5.30mm Width)
-
Surface Mount
0°C ~ 70°C (TA)
2.8mA (x4 Channels)
-
-
-
RFQ
OPA2734AIDGSTG4
Texas Instruments
IC OPAMP CHOPPER 1.6MHZ 10VSSOP
Nan stok11748 pcs
-
-
-
-
-
2 (1 Year)
Lead free / RoHS Compliant
OPA2734
Tape & Reel (TR)
1µV
100pA
1.6MHz
2.7 V ~ 12 V, ±1.35 V ~ 6 V
1.5 V/µs
20mA
Zero-Drift
2
10-VSSOP
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
600µA
-
Zero-Drift Amplifier 2 Circuit Rail-to-Rail 10-VSSOP
6 Weeks
RFQ
LMV651MGX
Texas Instruments
IC OPAMP GP 12MHZ RRO SC70-5
Nan stok11350 pcs
-
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMV651
Tape & Reel (TR)
100µV
80nA
12MHz
2.7 V ~ 5.5 V
3 V/µs
25mA
General Purpose
1
SC-70-5
5-TSSOP, SC-70-5, SOT-353
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
116µA
-
General Purpose Amplifier 1 Circuit Rail-to-Rail SC-70-5
-
RFQ
CA0324M96
Intersil
IC OPAMP GP 4 CIRCUIT 14SOIC
Nan stok229170 pcs
-
Bulk
-
32 V
32 V
-
-
-
-
2 mV
45 nA
1 MHz
-
-
40 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
800µA (x4 Channels)
-
-
-
RFQ
MAX4390EUK-T
Analog Devices Inc./Maxim Integrated
IC CURR SENSE 1 CIRCUIT SOT23-5
Nan stok76720 pcs
72 MHz
Bulk
-
11 V
4.5 V
-
-
-
-
5 mV
2.5 µA
-
-
500V/µs
55 mA
Current Sense
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
3.2mA
-
-
-
RFQ
NJM072BV-TE2
Nisshinbo Micro Devices Inc.
IC OPAMP JFET 2 CIRCUIT 8SSOP
Nan stok13960 pcs
-
Tape & Reel (TR)
-
36 V
8 V
-
-
-
-
3 mV
30 pA
3 MHz
-
13V/µs
-
J-FET
2
8-SSOP
8-LSSOP (0.173", 4.40mm Width)
-
Surface Mount
-40°C ~ 85°C
3mA
-
-
-
RFQ
TLC271BIDRG4
Texas Instruments
IC OPAMP GP 2.2MHZ 8SOIC
Nan stok66750 pcs
-
-
-
-
-
1 (Unlimited)
Lead free / RoHS Compliant
TLC271B
Tape & Reel (TR)
390µV
0.7pA
2.2MHz
4 V ~ 16 V, ±2 V ~ 8 V
5.3 V/µs
30mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
950µA
LinCMOS™
General Purpose Amplifier 1 Circuit 8-SOIC
10 Weeks
RFQ
KA324DTF
Fairchild Semiconductor
OPERATIONAL AMPLIFIER, 4 FUNC, 9
Nan stok229390 pcs
-
Bulk
-
32 V
3 V
-
-
-
-
1.5 mV
40 nA
-
-
-
40 mA
General Purpose
4
14-SOP
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
1mA
-
-
-
RFQ
CLC5612IMX
Texas Instruments
IC BUFFER 2 CIRCUIT 8SOIC
Nan stok26260 pcs
75 MHz
Bulk
-
14 V
14 V
-
-
-
-
8 mV
5 µA
-
-
290V/µs
-
Buffer
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
1.6mA (x2 Channels)
-
-
-
RFQ
OPA830IDRG4
Texas Instruments
IC OPAMP VFB 110MHZ 8SOIC
Nan stok32723 pcs
310MHz
-
-
-
-
2 (1 Year)
Lead free / RoHS Compliant
OPA830
Tape & Reel (TR)
1.5mV
5µA
110MHz
2.8 V ~ 11 V, ±1.4 V ~ 5.5 V
600 V/µs
85mA
Voltage Feedback
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
4.25mA
-
Voltage Feedback Amplifier 1 Circuit 8-SOIC
20 Weeks
RFQ
OP77BZ
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 8CERDIP
Nan stok17530 pcs
-
Bulk
-
30 V
30 V
-
-
-
-
-
-
-
-
-
-
General Purpose
1
8-CERDIP
8-CDIP (0.300", 7.62mm)
Differential
Through Hole
-25°C ~ 85°C
-
-
-
-
RFQ
MAX4073TAXK+TG65
Analog Devices Inc./Maxim Integrated
IC CURR SENSE 1 CIRCUIT SC70-5
Nan stok64690 pcs
1.8 MHz
Bulk
-
28 V
3 V
-
-
-
-
1 mV
40 µA
-
-
-
-
Current Sense
1
SC-70-5
5-TSSOP, SC-70-5, SOT-353
-
Surface Mount
-40°C ~ 125°C
500µA
-
-
-
RFQ
LMH6640MF
Texas Instruments
IC OPAMP VFB 1 CIRCUIT SOT23-5
Nan stok18727 pcs
190 MHz
Bulk
-
16 V
4.5 V
-
-
-
-
1 mV
1 µA
62 MHz
-
170V/µs
100 mA
Voltage Feedback
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
4mA
LMH®
-
-
RFQ
MAX4118ESA+
Analog Devices Inc./Maxim Integrated
IC OPAMP CFA 2 CIRCUIT 8SOIC
Nan stok18095 pcs
400 MHz
Bulk
-
11 V
9 V
-
-
-
-
1 mV
3.5 µA
-
-
1200V/µs
80 mA
Current Feedback
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
5mA (x2 Channels)
-
-
-
RFQ
INA132UAE4
Texas Instruments
IC OPAMP DIFF 300KHZ 8SOIC
Nan stok18980 pcs
300kHz
-
-
-
-
3 (168 Hours)
Lead free / RoHS Compliant
INA132
Tube
75µV
-
-
2.7 V ~ 36 V, ±1.35 V ~ 18 V
0.1 V/µs
12mA
Differential
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
160µA
-
Differential Amplifier 1 Circuit 8-SOIC
16 Weeks
RFQ
LMH6657MG
Texas Instruments
IC OPAMP VFB 1 CIRCUIT SC70-5
Nan stok18774 pcs
270 MHz
Bulk
-
12 V
3 V
-
-
-
-
1 mV
5 µA
140 MHz
-
700V/µs
110 mA
Voltage Feedback
1
SC-70-5
5-TSSOP, SC-70-5, SOT-353
-
Surface Mount
-40°C ~ 85°C
6.5mA
LMH®
-
-
RFQ
MAX4080SAUA-T
Analog Devices Inc./Maxim Integrated
IC CURRENT SENSE 1 CIRCUIT 8UMAX
Nan stok23720 pcs
250 kHz
Bulk
-
76 V
4.5 V
-
-
-
-
100 µV
5 µA
-
-
-
-
Current Sense
1
8-µMAX
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
-
Surface Mount
-40°C ~ 125°C
75µA
-
-
-
RFQ
LMH6503MAX
Texas Instruments
IC OPAMP VGA 135MHZ 14SOIC
Nan stok7320 pcs
135MHz
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMH6503
Tape & Reel (TR)
-
11µA
-
5 V ~ 12 V, ±2.5 V ~ 6 V
1800 V/µs
90mA
Variable Gain
1
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
37mA
LMH®
Variable Gain Amplifier 1 Circuit 14-SOIC
-
RFQ
LM6144BIM
Texas Instruments
LM6144 QUAD HIGH SPEED/LOW POWER
Nan stok4796 pcs
-
Bulk
-
24 V
1.8 V
-
-
-
-
1.3 mV
174 nA
18 MHz
-
25V/µs
22 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C (TA)
750µA (x4 Channels)
-
-
-
RFQ