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MAX4249
User Manual
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User Manual
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MAXIM MAX4249, MAX4257 User Manual

General Description
The MAX4249–MAX4257 low-noise, low-distortion oper­ational amplifiers offer rail-to-rail outputs and single­supply operation down to 2.4V. They draw 400µA of quiescent supply current per amplifier while featuring ultra-low distortion (0.0002% THD), as well as low input voltage-noise density (7.9nV/√Hz) and low input current-noise density (0.5fA/√Hz). These features make the devices an ideal choice for portable/battery-powered applications that require low distortion and/or low noise.
For additional power conservation, the MAX4249/ MAX4251/MAX4253/MAX4256 offer a low-power shut­down mode that reduces supply current to 0.5µA and puts the amplifiers’ outputs into a high-impedance state. The MAX4249-MAX4257’s outputs swing rail-to­rail and their input common-mode voltage range includes ground. The MAX4250–MAX4254 are unity­gain stable with a gain-bandwidth product of 3MHz. The MAX4249/MAX4255/MAX4256/MAX4257 are inter­nally compensated for gains of 10V/V or greater with a gain-bandwidth product of 22MHz. The single MAX4250/ MAX4255 are available in space-saving 5-pin SOT23 packages. The MAX4252 is available in an 8-bump chip­scale package (UCSP™) and the MAX4253 is available in a 10-bump UCSP. The MAX4250AAUK comes in a 5-pin SOT23 package and is specified for operation over the automotive (-40°C to +125°C) temperature range.
Applications
Wireless Communications Devices
PA Control
Portable/Battery-Powered Equipment
Medical Instrumentation
ADC Buffers
Digital Scales/Strain Gauges
Features
o Available in Space-Saving UCSP, SOT23, and
µMAX®Packages
o Low Distortion: 0.0002% THD (1kΩ load) o 400µA Quiescent Supply Current per Amplifier o Single-Supply Operation from 2.4V to 5.5V o Input Common-Mode Voltage Range Includes
Ground
o Outputs Swing Within 8mV of Rails with a 10kΩ
Load
o 3MHz GBW Product, Unity-Gain Stable
(MAX4250–MAX4254) 22MHz GBW Product, Stable with A
V
≥ 10V/V
(MAX4249/MAX4255/MAX4256/MAX4257)
o Excellent DC Characteristics
VOS= 70µV I
BIAS
= 1pA
Large-Signal Voltage Gain = 116dB
o Low-Power Shutdown Mode
Reduces Supply Current to 0.5µA Places Outputs in a High-Impedance State
o 400pF Capacitive-Load Handling Capability
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
________________________________________________________________
Maxim Integrated Products
1
19-1295; Rev 8; 10/11
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet.
UCSP is a trademark and µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin/Bump Configurations continued at end of data sheet.
Pin/Bump Configurations
Ordering Information
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
PART TEMP RANGE
MAX4249ESD+
MAX4249EUB+ -40°C to +85°C 10 µMAX —
MAX4250EUK+T
M AX 4250AAU K+ T- 40°C to + 125°C 5 SOT23 AEYJ
-40°C to +85°C 14 SO —
-40°C to +85°C 5 SOT23 ACCI
PIN­PACKAGE
MARK
TOP
TOP VIEW
(BUMPS ON BOTTOM)
12 3
V
OUTA
A
B
C
INA-
INA+
DD
MAX4252
V
SS
UCSP
OUTB
INB-
INB+
OUTB
V
OUTA
A4
A3
A2
A1
INB+
INA+
SHDNB
V
C4
SHDNA
B4
SS
INB-
B1
DD
MAX4253
C2 C3
C1
INA-
UCSP
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= 5V, VSS= 0V, VCM= 0V, V
OUT
= VDD/2, RLconnected to VDD/2, SHDN = VDD, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Notes 2, 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Power-Supply Voltage (VDDto VSS) ......................+6.0V to -0.3V
Analog Input Voltage (IN_+, IN_-)....(V
DD
+ 0.3V) to (VSS- 0.3V)
SHDN Input Voltage ......................................6.0V to (V
SS
- 0.3V)
Output Short-Circuit Duration to Either Supply ..........Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW
8-Bump UCSP (derate 4.7mW/°C above +70°C)........379mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW
8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW
10-Bump UCSP (derate 6.1mW/°C above +70°C) ......484mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW
Operating Temperature Range ...........................-40°C to +85°C
MAX4250AAUK .............................................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
Quiescent Supply Current Per Amplifier
Input Offset Voltage (Note 5) V
Input Offset Voltage Tempco TCV
Input Offset Current I
Differential Input Resistance R
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio CMRR
DD
I
Q
OS
OS
B
OS
IN
V
CM
(Note 4) 2.4 5.5 V
VDD = 3V 400
Normal mode
Shutdown mode (SHDN = VSS) (Note 2) 0.5 1.5
E temperature ±0.07 ±0.75
MAX4250AAUK ±1.85
(Note 6)
(Note 6)
Guaranteed by CMRR test
V
SS
V
DD
VDD = 5V
V
= 5V, UCSP only 420 655
DD
TA = +25°C 0.1 1
TA = -40°C to +85°C 50Input Bias Current I
T
= -40°C to +125°C 1500
A
TA = +25°C 0.1 1
TA = -40°C to +85°C 10
T
= -40°C to +125°C 100
A
- 0.2V ≤ VCM ≤
- 1.1V
E temperature 420 575
MAX4250AAUK 675
0.3 µV/°C
1000 GΩ
E temperature -0.2 V
MAX4250AAUK 0 V
E temperature 70 115
MAX4250AAUK 68
DD
DD
mV
-1.1
-1.1
µA
pA
pA
V
dB
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 5V, VSS= 0V, VCM= 0V, V
OUT
= VDD/2, RLconnected to VDD/2, SHDN = VDD, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Rejection Ratio PSRR VDD – 2.4V to 5.5V
Large-Signal Voltage Gain A
Output Voltage Swing V
Output Voltage Swing V
Output Short-Circuit Current I
Output Leakage Current I
SHDN Logic Low V
SHDN Logic High V
SHDN Input Current IIL/I
Input Capacitance 11 pF
E temperature 75 100
MAX4250AAUK 72
= 10kΩ to V
V
OUT
OUT
SC
LEAK
IL
IH
R
L
= 25mV to V
V
OUT
– 4.97V
= 1kΩ to V
R
L
= 150V to V
V
OUT
– 4.75V
- V
|V
IN+
R
|V R
IN-
= 10kΩ to V
L
- V
IN+
IN-
= 1kΩ to VDD/2
L
Shutdown mode (SHDN = VSS),
= V
V
OUT
SS
(Note 2) 0.2 X V
(Note 2) 0.8 X V
SHDN = VSS = VDD (Note 2) 0.5 1.5 µA
IH
/2;
DD
/2;
DD
DD
| ≥ 10mV;
/2
DD
| ≥ 10mV,
to V
DD
E temperature 80 116
DD
MAX4250AAUK 77
E temperature 80 112
MAX4250AAUK 77
VDD - V
OH
- V
V
OL
SS
VDD - V
OH
- V
V
OL
SS
(Note 2)
E825 A30 E720
A25
E 77 200
A 225
E 47 100
A 125
68 mA
0.001 1.0 µA
D D
DD
dB
dB
mV
mV
V
V
Gain-Bandwidth Product GBW
Slew Rate SR
Peak-to-Peak Input-Noise Voltage
Input Voltage-Noise Density e
Input Current-Noise Density i
e
n
P-P
n
n
MAX4250–MAX4254
MAX4249/MAX4255/MAX4256/MAX4257
MAX4250–MAX4254
MAX4249/MAX4255/MAX4256/MAX4257
f = 0.1Hz to 10Hz
f = 10Hz
f = 1kHz
f = 30kHz
f = 1kHz
3
MHz
22
0.3 V/µs
2.1
760 nV
P-P
27
8.9
nV/√Hz
7.9
0.5 fA/√Hz
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 5V, VSS= 0V, VCM= 0V, V
OUT
= VDD/2, RLconnected to VDD/2, SHDN = VDD, TA= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Notes 2, 3)
Note 2: SHDN is available on the MAX4249/MAX4251/MAX4253/MAX4256 only. Note 3: All device specifications are 100% tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 4: Guaranteed by the PSRR test. Note 5: Offset voltage prior to reflow on the UCSP. Note 6: Guaranteed by design. Note 7: Lowpass-filter bandwidth is 22kHz for f = 1kHz and 80kHz for f = 20kHz. Noise floor of test equipment = 10nV/√Hz.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Total Harmonic Distortion Plus Noise
Capacitive-Load Stability
Gain Margin GM
Phase Margin ΦM
Settling Time
THD+N
MAX4250–MAX4254 A
= 1V/V, V
V
= 1kΩ to GND
R
L
(Note 7)
MAX4249/MAX4255/ MAX4256/MAX4257 A
= 1V/V, V
V
R
= 1kΩ to GND (Note 7)
L
No sustained oscillations
MAX4250–MAX4254, AV = 1V/V 10
MAX4249/MAX4255/MAX4256/MAX4257,
= 10V/V
A
V
MAX4250–MAX4254, AV = 1V/V 74
MAX4249/MAX4255/MAX4256/MAX4257,
= 10V/V
A
V
To 0.01%, = 2V step
V
= 2V
OUT
= 2V
OUT
MAX4250–MAX4254 6.7
OUT
MAX4249/MAX4255/ MAX4256/MAX4257
P-P
P-P
,
,
f = 1kHz
f = 20kHz
f = 1kHz
f = 20kHz
0.0004
0.006
0.0012
0.007
400 pF
12.5
68
1.6
%
dB
Degrees
µs
I
Delay Time to Shutdown t
Delay Time to Enable t
Power-Up Delay Time t
SH
EN
PU
VDD = 5% of
normal operation
V
OUT = 2.5V,
V
OUT settles to
0.1%
V
DD = 0 to 5V step, VOUT stable to 0.1%
MAX4251/MAX4253 0.8
MAX4249/MAX4256 1.2
MAX4251/MAX4253 8
MAX4249/MAX4256 3.5
6µs
µs
µs
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
_______________________________________________________________________________________
5
0
10
5
20
15
25
30
35
40
-95
-55
-35
-75
-13
7
284969
90
110
131
152
172
192
MAX4251/MAX4256
INPUT OFFSET VOLTAGE DISTRIBUTION
MAX4249-57 TOC01
VOS (µV)
NUMBER OF UNITS
400 UNITS
V
CM
= 0
T
A
= +25°C
Typical Operating Characteristics
(VDD= 5V, VSS= 0V, VCM= V
OUT
= VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion measurements,
T
A
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE
0.6
0.5
0.4
0.3
0.2
OUTPUT VOLTAGE (V)
0.1
vs. OUTPUT LOAD CURRENT
VDD = 3V OR 5V
= ±10mV
V
DIFF
VDD - V
OH
V
OL
0
04312 5678910
OUTPUT LOAD CURRENT (mA)
MAX4249-57 TOC04
OFFSET VOLTAGE
vs. TEMPERATURE
250
VCM = 0
200
150
100
50
(µV)
0
OS
V
-50
-100
-150
-200
-250
-40 0-20 20 40 60 80
TEMPERATURE (°C)
OUTPUT VOLTAGE SWING (VOH)
0.10
0.09
0.08
0.07
(V)
0.06
OH
- V
0.05
DD
V
0.04
0.03
0.02
0.01
0
-40 0-20 20 6040 80
vs. TEMPERATURE
RL = 1kΩ
RL = 10kΩ
TEMPERATURE (°C)
R
= 100kΩ
L
MAX4249-57 TOC02
MAX4249-57 TOC05
200
150
100
50
INPUT OFFSET VOLTAGE (µV)
0
-50
0.06
0.05
0.04
(V)
OL
0.03
V
0.02
0.01
0
INPUT OFFSET VOLTAGE
vs. INPUT COMMON-MODE VOLTAGE
VDD = 3V VDD = 5V
-0.5 1.50.5 2.5 3.5 4.5 INPUT COMMON-MODE VOLTAGE (V)
OUTPUT VOLTAGE SWING (VOL)
vs. TEMPERATURE
R
= 1kΩ
L
RL = 10kΩ
R
-40 0-20 20 6040 80
TEMPERATURE (°C)
= 100kΩ
L
MAX4249-57 TOC03
MAX4249 -57TOC06
LARGE-SIGNAL VOLTAGE GAIN
vs. OUTPUT VOLTAGE SWING
140
130
120
110
(dB)
100
V
A
90
80
70
60
50
0 10050 150 200 250
V
SWING FROM EITHER SUPPLY (mV)
OUT
LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWING
R
= 200kΩ
L
= 20kΩ
R
L
90
80
70
60
50
0 10050 150 200 250
V
OUT
R
REFERENCED TO GND
L
SWING FROM EITHER SUPPLY (mV)
R
REFERENCED TO GND
L
= 200kΩ
R
L
R
= 20kΩ
L
RL = 2kΩ
VDD = 3V
MAX4249-57 TOC07
LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWING
140
130
120
110
(dB)
V
A
100
90
80
70
60
0 50 100 150 200 250
V
OUT
= 20kΩ
R
L
R
= 2kΩ
L
SWING FROM EITHER SUPPLY (mV)
R
R
REFERENCED TO GND
L
= 200kΩ
L
VDD = 3V
MAX4249-57 TOC08
(dB) A
140
130
120
110
V
100
R
= 2kΩ
L
MAX4249-57 TOC09
VDD = 5V
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps
6 _______________________________________________________________________________________
50
80
70
60
90
100
110
120
130
140
150
0 10050 150 200 250
MAX4249-57 TOC10
VDD = 5V
R
L
REFERENCED TO GND
LARGE-SIGNAL VOLTAGE GAIN vs. OUTPUT VOLTAGE SWING
V
OUT
SWING FROM EITHER SUPPLY (mV)
RL = 2kΩ
R
L
= 20kΩ
R
L
= 200kΩ
A
V
(dB)
100
110
105
115
120
125
-40 0-20 20 6040 80
LARGE-SIGNAL VOLTAGE GAIN
vs. TEMPERATURE
MAX4249-57 TOC11
TEMPERATURE (°C)
RL REFERENCED TO VDD/2 V
DD
= 5V
A
V
(dB)
RL = 1kΩ V
OUT
= 150mV
TO 4.75mV
R
L
= 100kΩ
V
OUT
= 10mV
TO 4.99mV
R
L
= 10kΩ
V
OUT
= 20mV
TO 4.975mV
0.373
0.374
0.375
0.376
340
380
360
400
420
440
460
-40 0-20 20 6040 80
SUPPLY CURRENT AND SHUTDOWN
SUPPLY CURRENT vs. TEMPERATURE
MAX4249-57 TOC12
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (µA)
PER AMPLIFIER
SHDN = V
DD
SUPPLY CURRENT (µA)
SHDN = V
SS
320
340
360
380
400
420
440
0
0.1
0.2
0.3
0.4
0.5
0.6
1.8 2.82.3 3.3 3.8 4.3 4.8 5.3 5.5
SUPPLY CURRENT AND SHUTDOWN
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4249-57 TOC13
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
SHUTDOWN SUPPLY CURRENT (µA)
PER AMPLIFIER
SHDN = V
DD
SHDN = V
SS
2000
100
0.001 0.1 10.01 5
SUPPLY CURRENT
vs. OUTPUT VOLTAGE
MAX4249-57 TOC14
OUTPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
1000
400
VDD = 5V
VDD = 3V
60
-40 100 10k 100k 1M1k 10M
MAX4250–MAX4254
GAIN AND PHASE vs. FREQUENCY
-20
-10
0
-30
MAX4249-57 TOC16
GAIN (dB)
PHASE (DEGREES)
10
20
30
40
50
180
-180
-108
-72
-36
-144
0
36
72
108
144
GAIN
PHASE
VDD = 3V, 5V
R
L
= 50kΩ
C
L
= 20pF
A
V
= 1000
0
-100
-110 1 1k 10k 100k 1M10 100 10M
MAX4250–MAX4254
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-80
-70
-60
-90
MAX4249-57 TOC18
PSRR (dB)
-50
-40
-30
-20
-10
PSRR+
PSRR-
VDD = 3V, 5V
Typical Operating Characteristics (continued)
(VDD= 5V, VSS= 0V, VCM= V
OUT
= VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion measurements,
T
A
= +25°C, unless otherwise noted.)
180
160
140
INPUT OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
V
RL REFERENCED TO GND
OUT
V
= 0
CM
= VDD/2
MAX4249-57 TOC15
MAX4249/MAX4255/MAX4256/MAX4257
GAIN AND PHASE vs. FREQUENCY
60
VDD = 3V, 5V
50
= 50kΩ
R
L
= 20pF
C
L
40
= 1000
A
V
30
20
10
GAIN (dB)
0
-10
-20
-30
-40 100 10k 100k 1M1k 10M
FREQUENCY (Hz)
MAX4249-57 TOC17
GAIN
PHASE
180
144
108
72
36
0
-36
-72
-108
-144
-180
120
(µV)
OS
V
100
80
60
40
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
PHASE (DEGREES)
R
L
SUPPLY VOLTAGE (V)
= 10kΩ
R
R
L
= 100kΩ
L
= 1kΩ
MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
_______________________________________________________________________________________
7
1000
0.1 1k 10k 100k 1M 10M
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4249-57 TOC19
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
1
10
100
A
V
= 1 (MAX4250–MAX4254)
AV = 10 (MAX4249/MAX4255/
MAX4256/MAX4257)
30
0
10 100 1k 10k 100k
INPUT VOLTAGE-N0ISE DENSITY
vs. FREQUENCY
MAX4249-57 TOC20
FREQUENCY (Hz)
Vn-EQUIVALENT INPUT NOISE-VOLTAGE (nV/√Hz)
5
10
15
20
25
200nV/div
1s/div
0.1Hz TO 10Hz
P-P
NOISE
MAX4249-57 TOC21
V
DD
= 3V OR 5V
V
P-PNOISE
= 760nV
P-P
-160
-140
-120
-100
-80
-60
-40
-20
0
MAX4250–MAX4254
FFT OF DISTORTION AND NOISE
FREQUENCY (Hz)
AMPLITUDE (dBc)
10 5k 10k
15k
20k
MAX4249-57 TOC22
RL = 1kΩ
f
O
= 1kHz
A
V
= 1
f
O
HD2
HD3
HD4
HD5
V
OUT
= 2V
P-P
-140
-120
-100
-80
-60
-40
-20
0
20
10 5k 10k
15k
20k
MAX4249/MAX4255/MAX4256/MAX4257
FFT OF DISTORTION AND NOISE
MAX4249-57 TOC23
FREQUENCY (Hz)
AMPLITUDE (dBc)
V
OUT
= 4V
P-P
fO = 1kHz
HD2
HD3
V
IN
10kΩ
100kΩ
11kΩ
f
O
V
O
0.001
0.01
0.1
1
10
021 345
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE (V
DD
= 5V)
MAX4249-57 TOC24
OUTPUT VOLTAGE (V
P-P
)
THD+N (%)
V
IN
RL = 1kΩ
100kΩ
11kΩ
AV = 10 f
O
= 3kHz
FILTER BW = 30kHz
V
O
R
L
RL = 10kΩ
R
L
= 100kΩ
0.001
0.01
0.1
1
10
0213
MAX4249-57 TOC25
OUTPUT VOLTAGE (V
P-P
)
THD+N (%)
100kΩ
11kΩ
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE SWING (V
DD
= 3V)
V
OUT
V
IN
R
L
RL = 1kΩ
R
L
= 10kΩ
R
L
= 100kΩ
A
V
= 10
f
O
= 3kHz
FILTER BW = 30kHz
Typical Operating Characteristics (continued)
(VDD= 5V, VSS= 0V, VCM= V
OUT
= VDD/2, input noise floor of test equipment =10nV/√Hz for all distortion measurements,
T
A
= +25°C, unless otherwise noted.)
MAX4249/MAX4255/MAX4256/MAX4257
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE SWING
1
A
= 10
V
0.1
THD+N (%)
0.01
fO = 3kHz, FILTER BW = 30kHz
0.001 03412 5
V
IN
100kΩ
11kΩ
fO = 20kHz, FILTER BW = 80kHz
OUTPUT VOLTAGE (V
)
P-P
V R
OUT
L
MAX4249-57 TOC26
0.0001
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
0.1
R1 = 560Ω, R2 = 53kΩ
0.01
THD+N (%)
0.001
10 1k100 10k
V
IN
R1
R1 = 5.6kΩ, R2 = 53kΩ
A
= 1
V
FREQUENCY (Hz)
R2
FILTER BW = 22kHz
R
V
OUT
R
L
A
= 100
V
A
= 10
V
= 10kΩ TO GND
L
V
= 2V
O
MAX4249-57 TOC27
P-P
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