MAX44264 [MAXIM]
Ultra-Low Power Op Amp in a Tiny 6-Bump WLP; 超低功耗运算放大器，采用微型6焊球WLP封装
| 型号： | MAX44264 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Ultra-Low Power Op Amp in a Tiny 6-Bump WLP |
| 文件： | 总10页 (文件大小：231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5708; Rev 0; 12/10
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
MAX264
General Description
Features
The MAX44264 is an ultra-small (6-bump WLP) op amp
that draws only 750nA of supply current. It operates
from a single +1.8V to +5.5V supply and features
ground-sensing inputs and rail-to-rail output. The ultra-
low supply current, low-operating voltage, and rail-to-
rail output capabilities make these operational
amplifiers ideal for use in single lithium ion (Li+), or two-
cell NiCd or alkaline battery systems. The rail-to-rail out-
put stage of the MAX44264 is capable of driving the
output voltage to within 4mV of the rail with a 100kΩ
load, and can sink and source 11mA with a +5V sup-
ply. The IC is unity-gain stable and available in a
space-saving 0.9mm x 1.3mm, 6-bump WLP package.
♦ Ultra-Low 750nA Supply Current per Amplifier
♦ Ultra-Low +1.8V Supply Voltage Operation
♦ Ground-Sensing Input Common-Mode Range
♦ Outputs Swing Rail-to-Rail
♦ Outputs Source and Sink 11mA of Load Current
♦ No Phase Reversal for Overdriven Inputs
♦ High 120dB Open-Loop Voltage Gain
♦ Low 500µV Input Offset Voltage
♦ 9kHz Gain-Bandwidth Product
♦ 250pF (min) Capacitive Load Capability
Applications
♦ Available in a Tiny, 0.9mm x 1.3mm, 6-Bump WLP
Cell Phones
Package
Tablet/Notebook Computers
Mobile Accessories
Ordering Information
PIN-
TOP
PART
TEMP RANGE
Battery-Powered Devices
PACKAGE
MARK
MAX44264EWT+ -40°C to +85°C
6 WLP
+CB
+Denotes a lead(Pb)-free/RoHS-compliant package.
________________________________________________________________ Maxim Integrated Products
1
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.
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
ABSOLUTE MAXIMUM RATINGS
V
to V ...............................................................-0.3V to +6V
Operating Temperature Range ......................... -40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
DD
SS
IN_+ or IN_-......................................(V - 0.3V) to (V
+ 0.3V)
SS
DD
OUT_ Shorted to V or V ......................................Continuous
SS
DD
Continuous Power Dissipation (T = +70°C)
A
6-Bump WLP (derate 10.5mW/°C above +70°C) .............840mW
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.
MAX264
ELECTRICAL CHARACTERISTICS
(V
= +5V, V = 0V, V
SS
= 0V, V
= V /2, R = ∞ to V /2, T = +25°C, unless otherwise noted.)
OUT DD L DD A
DD
CM
PARAMETER
SYMBOL
CONDITIONS
Guaranteed by PSRR tests
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
1.8
5.5
V
DD
V
V
= +1.8V
= +5.0V
0.6
0.75
0.5
DD
DD
Supply Current (per
Amplifier)
I
µA
DD
1.2
Input Offset Voltage
Input Bias Current
Input Offset Current
V
7.0
mV
pA
pA
OS
I
200
12.5
1500
B
I
OS
Input Common-Mode
Voltage Range
V
1.1
-
DD
V
Guaranteed by the CMRR test
Specified with V ≤ V ≤ (V - 1.1V)
V
V
CM
SS
Common-Mode Rejection
Ratio
CMRR
PSRR
70
95
90
dB
dB
SS
CM
DD
Power-Supply Rejection
Ratio
+1.8V ≤ V ≤ +5.5V
70
DD
R = 1MΩ, V
= 50mV to V - 50mV
90
90
120
112
100
1
L
OUT DD
Large-Signal Voltage Gain
Output Voltage Swing
A
dB
R = 100kΩ, V
L
= 200mV to V - 200mV
VOL
OUT
DD
R = 10kΩ, V
L
= 200mV to V - 200mV
DD
OUT
R = 1MΩ
L
4
Swing high
V
specified as
R = 100kΩ
4
10
OH
L
V
- V
OH
DD
R = 10kΩ
L
40
0.5
1
mV
R = 1MΩ
L
5
5
Swing low
specified as
V
R = 100kΩ
L
OL
V
- V
SS
OL
R = 10kΩ
L
10
9
Gain-Bandwidth Product
Phase Margin
GBW
kHz
φ
M
90
degrees
2
_______________________________________________________________________________________
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
MAX264
ELECTRICAL CHARACTERISTICS (continued)
(V
= +5V, V = 0V, V
SS
= 0V, V
= V /2, R = ∞ to V /2, T = +25°C, unless otherwise noted.)
OUT DD DD A
L
DD
CM
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
2
MAX
UNITS
Slew Rate
SR
V
= 4V step
V/ms
OUT
f = 1kHz
150
120
11
36
2
Input Voltage Noise
e
nV/√Hz
n
f = 10kHz
Shorted to V (sourcing)
SS
Output Short-Circuit
Current
mA
Shorted to V (sinking)
DD
Power-On Time
Power-Off Time
Capacitive Load
t
µs
µs
ON
t
OFF
2
C
No sustained oscillations
LOAD
250
pF
ELECTRICAL CHARACTERISTICS
(V
= +5V, V = 0V, V
SS
= 0V, V
= V /2, R = ∞ to V /2, T = T
to T
, unless otherwise noted.) (Note 1)
MAX
DD
CM
OUT
DD
L
DD
A
MIN
PARAMETER
SYMBOL
CONDITIONS
Guaranteed by PSRR tests
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
1.8
5.5
V
DD
Supply Current (per
Amplifier)
I
V
= +5.0V
1.5
µA
mV
µV/°C
nA
DD
DD
Input Offset Voltage
V
±15
OS
Input Offset Voltage
Temperature Coefficient
Input Bias Current
TCV
8
OS
I
4.25
B
Input Common-Mode
Voltage Range
V
1.1
-
DD
V
Guaranteed by the CMRR test
V
V
CM
SS
Common-Mode Rejection
Ratio
CMRR
PSRR
V
≤ V
≤ (V - 1.1V)
DD
56
dB
dB
dB
SS
CM
+1.8V ≤ V
+2V ≤ V
≤ +5.5V, 0oC ≤ T ≤ +85oC
65
65
75
75
DD
A
Power-Supply Rejection
Ratio
≤ +5.5V, -40oC ≤ T ≤ +85oC
DD
A
V
V
= 50mV to V
- 50mV, R = 1MΩ
DD L
OUT
OUT
Large-Signal Voltage Gain
A
VOL
= 200mV to V
- 200mV, R = 100kΩ
L
DD
R = 1MΩ
5
15
5
L
Swing high specified
as V - V
V
OH
DD
OH
R = 100kΩ
L
Output Voltage Swing
mV
R = 1MΩ
L
Swing low specified as
- V
V
OL
V
OL
SS
R = 100kΩ
L
5
Note 1: All devices are production tested at T = +25°C. All temperature limits are guaranteed by design.
A
_______________________________________________________________________________________
3
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
Typical Operating Characteristics
(V
= +5V, V = 0V, V
= 0V, R = 100kΩ to V /2, T = +25°C, unless otherwise noted.)
DD
SS
CM
L
DD
A
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
SUPPLY CURRENT vs.
TEMPERATURE
OFFSET VOLTAGE vs.
TEMPERATURE
0.9
0.9
0.50
0.45
0.40
0.35
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
MAX264
0.30
0.25
0.20
0.15
0.10
0.05
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
TEMPERATURE (°C)
OFFSET VOLTAGE
vs. COMMON-MODE VOLTAGE
INPUT BIAS CURRENT vs.
TEMPERATURE
INPUT BIAS CURRENT vs.
COMMON-MODE VOLTAGE
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
-50
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-150
-200
-250
-300
-350
-400
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
COMMON-MODE VOLTAGE (V)
-50
-25
0
25
50
75
100
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
COMMON-MODE VOLTAGE (V)
TEMPERATURE (°C)
OUTPUT VOLTAGE SWING LOW vs.
TEMPERATURE
OUTPUT VOLTAGE SWING HIGH vs.
TEMPERATURE
POWER-SUPPLY REJECTION RATIO vs.
FREQUENCY
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
6
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
5
4
3
2
1
R = 100kΩ
L
R = 100kΩ
L
R = 1MΩ
L
R = 1MΩ
L
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
10
100
1k
10k
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQUENCY (Hz)
4
_______________________________________________________________________________________
Single/Dual/Quad, +1.8V/750nA, SC70,
Rail-to-Rail Op Amps
MAX264
Typical Operating Characteristics (continued)
(V
= +5V, V = 0V, V
= 0V, R = 100kΩ to V /2, T = +25°C, unless otherwise noted.)
DD
SS
CM
L
DD
A
COMMON-MODE REJECTION RATIO vs.
TEMPERATURE
MINIMUM SUPPLY VOLTAGE
vs. TEMPERATURE
A
VOL
vs. OUTPUT VOLTAGE SWING
140
130
120
110
100
90
-20
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-30
-40
-50
R = 1MΩ
L
R = 100kΩ
L
-60
-70
R = 10kΩ
L
-80
-90
80
-100
-110
-120
70
60
2.5
3.0
3.5
4.0
4.5
5.0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
OUTPUT VOLTAGE (Vp-p)
TEMPERATURE (°C)
TEMPERATURE (°C)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
GAIN AND PHASE vs. FREQUENCY
GAIN AND PHASE vs. FREQUENCY
MAX44264 toc14
MAX44264 toc13
80
180
80
180
135
10.00
C = 12pF
L
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
R = 1MΩ
L
135
90
A
= 1000V/V
VCL
GAIN
GAIN
90
45
0
1.00
0.10
0.01
45
0
-45
-45
-90
PHASE
PHASE
R = 1MΩ
L
-90
A
= 1000V/V
VCL
C = 250pF
L
-135
-135
1
10
100
1k
10k
100k
1
10
100
1k
10k
100k
10
100
1k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
STABILITY vs. CAPACITIVE
AND RESISTIVE LOADS
VOLTAGE NOISE DENSITY vs.
FREQUENCY
I
vs. V
OUT
OUT
40
36
32
28
24
20
16
12
8
100k
10k
I
SINK
10k
1k
1k
100
10
UNSTABLE
REGION
I
SOURCE
4
0
100
0
1
2
3
4
5
10k
100k
1M
10
100
1k
10k
100k
V
(V)
RESISTIVE LOAD (Ω)
FREQUENCY (Hz)
OUT
_______________________________________________________________________________________
5
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
Typical Operating Characteristics (continued)
(V
= +5V, V = 0V, V
= 0V, R = 100kΩ to V /2, T = +25°C, unless otherwise noted.)
DD
SS
CM
L
DD
A
SMALL-SIGNAL STEP RESPONSE
SMALL-SIGNAL STEP RESPONSE
MAX44264 toc21
SMALL-SIGNAL STEP RESPONSE
MAX44264 toc20
MAX44264 toc19
V
A
= +5V
= +1V/V
V
A
= +5V
= +1V/V
DD
V
L
L
V
A
= +5V
= +1V/V
DD
V
L
L
DD
V
L
L
R = 1MΩ
C = 250pF
R = 1MΩ
C = 12pF
R = 1MΩ
C = 1000pF
INPUT
50mV/div
INPUT
50mV/div
INPUT
500mV/div
MAX264
OUTPUT
50mV/div
OUTPUT
50mV/div
OUTPUT
500mV/div
500µs/div
500µs/div
500µs/div
PERCENT OVERSHOOT
vs. CAPACITIVE LOAD
LARGE-SIGNAL STEP RESPONSE
LARGE-SIGNAL STEP RESPONSE
MAX44264 toc23
MAX44264 toc22
30
V
A
= +5V
= +1V/V
DD
V
L
L
V
= +5V
DD
V
A = +1V/V
R = 1MΩ
L
C = 1000pF
25
20
15
10
5
R = 1MΩ
L
R = 1MΩ
C = 12pF
INPUT
500mV/div
INPUT
500mV/div
L
R = 100kΩ
L
OUTPUT
500mV/div
OUTPUT
500mV/div
R = 10kΩ
L
0
500µs/div
0
50
100
150
200
250
300
500µs/div
C
(pF)
LOAD
SMALL-SIGNAL GAIN vs. FREQUENCY
SMALL-SIGNAL GAIN vs. FREQUENCY
3
3
R = 10kΩ
R = 100kΩ
L
L
2
1
2
1
V
OUT
= 100mV
V
= 100mV
P-P
OUT
P-P
C = 12pF
L
C = 12pF
L
0
0
A
= 1
V
A
= 1
V
-1
-2
-3
-4
-5
-6
-7
-1
-2
-3
-4
-5
-6
-7
100
1k
FREQUENCY (Hz)
10k
100
1k
10k
100k
FREQUENCY (Hz)
6
_______________________________________________________________________________________
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
MAX264
Typical Operating Characteristics (continued)
(V
= +5V, V = 0V, V
SS
= 0V, R = 100kΩ to V /2, T = +25°C, unless otherwise noted.)
CM L DD A
DD
SMALL-SIGNAL GAIN vs. FREQUENCY
LARGE-SIGNAL GAIN vs. FREQUENCY
3
3
2
R = 10kΩ
R = 1MΩ
L
L
2
1
V
= 1V
V
= 100mV
OUT
P-P
OUT
P-P
C = 12pF
L
C = 12pF
L
1
0
0
A
= 1
V
A
= 1
V
-1
-2
-3
-4
-5
-6
-7
-1
-2
-3
-4
-5
-6
-7
100
1k
FREQUENCY (Hz)
10k
100
1k
10k
100k
FREQUENCY (Hz)
LARGE-SIGNAL GAIN vs. FREQUENCY
LARGE-SIGNAL GAIN vs. FREQUENCY
3
3
R = 100kΩ
L
R = 1MΩ
L
2
1
V
= 1V
2
1
OUT
P-P
V
= 1V
OUT
P-P
C = 12pF
L
C = 12pF
L
A
= 1
V
A
= 1
V
0
0
-1
-2
-3
-4
-5
-6
-7
-1
-2
-3
-4
-5
-6
-7
100
1k
FREQUENCY (Hz)
10k
100
1k
FREQUENCY (Hz)
10k
_______________________________________________________________________________________
7
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
Pin Configuration
TOP VIEW
MAX44264
+
IN+
IN-
A1
B1
C1
A2
B2
C2
V
SS
V
DD
MAX264
OUT
N.C.
WLP BUMP
SIDE DOWN
Pin Description
PIN
A1
A2
B1
B2
C1
C2
NAME
FUNCTION
IN+
Noninverting Amplifier Input
Negative Power-Supply Voltage
Inverting Amplifier Input
Positive Power-Supply Voltage
Amplifier Output
V
SS
IN-
V
DD
OUT
N.C.
No Connection. Not internally connected.
applications, good layout is extremely important
because low-power requirements demand high-imped-
ance circuits. The layout should also minimize stray
capacitance at the amplifier inputs. However some stray
capacitance may be unavoidable, and it may be neces-
sary to add a 2pF to 10pF capacitor across the feedback
resistor as shown in Figure 1. Select the smallest capaci-
tor value that ensures stability.
Applications Information
Ground Sensing
The common-mode input range of the MAX44264
extends down to ground, and offers excellent common-
mode rejection. These devices are guaranteed not to
undergo phase reversal when the input is overdriven.
Power Supplies and Layout
The IC operates from a single +1.8V to +5.5V power
supply. Bypass power supplies with a 0.1µF ceramic
V
CC
V
IN
capacitor placed close to the V
pin.
DD
Ground layout improves performance by decreasing the
amount of stray capacitance and noise at the op amp’s
inputs and outputs. To decrease stray capacitance, mini-
mize PCB lengths and resistor leads, and place external
components close to the op amps’ pins.
MAX44264
V
SS
R1
Bandwidth
The IC is internally compensated for unity-gain stability
and has a typical gain-bandwidth of 9kHz.
R2
2pF TO 10pF
Stability
The IC maintains stability in their minimum gain configu-
ration while driving capacitive loads. Although this prod-
uct family is primarily designed for low-frequency
Figure 1. Compensation for Feedback Node Capacitance
Chip Information
PROCESS: BiCMOS
8
_______________________________________________________________________________________
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
MAX264
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
PACKAGE TYPE
PACKAGE CODE
OUTLINE NO.
21-0217
LAND PATTERN NO.
—
6 WLP
W61B1+1
_______________________________________________________________________________________
9
Ultra-Low Power Op Amp in
a Tiny 6-Bump WLP
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
12/10
Initial release
—
MAX264
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2010 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
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