TEXAS INSTRUMENTS BUF04701 Technical data
®
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SBOS214B – SEPTEMBER 2001 – REVISED JULY 2004
4-Channel, Rail-to-Rail, CMOS
BUFFER AMPLIFIER
BUF04701
FEATURES
● UNITY GAIN BUFFER
● RAIL-TO-RAIL INPUT/OUTPUT
● WIDE BANDWIDTH: 8MHz
● HIGH SLEW RATE: 10V/µs
● LOW QUIESCENT CURRENT: 1.1mA
● TINY PACKAGE: MSOP-10, TSSOP-14
APPLICATIONS
● TFT-LCD REFERENCE DRIVERS
● NOTEBOOKS
● ELECTRONIC GAMES
● ELECTRONIC BOOKS
● PERSONAL COMMUNICATION DEVICES
● PDA
● ACTIVE FILTERS
● ADC/DAC BUFFER
DESCRIPTION
The BUF04701 is a 4-channel, low-power, high-voltage railto-rail input/output buffer. Operating on supplies ranging from
3.5V to 12V (±1.75V to ±6V), the BUF04701 has a 3dB
bandwidth of 8MHz with a slew rate of 10V/µs, and requires
only 1.1mA quiescent current. The BUF04701 features railto-rail input and output capability, giving maximum dynamic
range at any supply voltage.
Featuring fast slewing and settling times, as well as a high
output drive, the BUF04701 is ideal for use as a voltage
reference buffer in Thin Film Transistor Liquid Crystal Displays (TFT-LCDs).
The BUF04701 is available in an MSOP-10 package, providing the smallest footprint and thinnest package option available, as well as the TSSOP-14 package with a pinout that
corresponds to standard quad op amps. This makes it easy to
replace quad op amps in existing LCD displays with the low
cost BUF04701, without changing the layout. The BUF04701
operates over a temperature range of –40°C to +125°C.
BUF04701 RELATED PRODUCTS
FEATURES PRODUCT
1.2 MHz BW, 3.3mA I
7MHz GBW, 1.5mA IQ, VS 3.5 - 12 OPA4743
5.9MHz GBW, 4.5mA I
10MHz GBW, 2.5mA I
Q
, VS = 4V - 44V TLE2144/2
Q
, 16V/µs SR TLC084
Q
BUF11702
1
Out A
(1)
2
NC
In A
+V
In B
NC
Out B
(1)
AC
3
4
5
BD
6
7
TSSOP-14 (PW)
NOTE: (1) NC Means No Internal Connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Out D
(1)
NC
In D
–V
In C
(1)
NC
Out C
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Out A
In A
+V
In B
Out B
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2
3
4
5
MSOP-10 (DGS)
Out D
10
In D
9
–V
8
In C
7
Out C
6
Copyright © 2001-2004, Texas Instruments Incorporated
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V+ to V–................................................................. 13.2V
Signal Input Terminals, Voltage
Output Short-Circuit
Operating Temperature .................................................. –40°C to +125°C
Storage Temperature ..................................................... –65°C to +150°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s)............................................... +300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may
degrade device reliability. (2) Input terminals are diode-clamped to the
power-supply rails. Input signals that can swing more than 0.5V beyond the
supply rails should be current-limited to 10mA or less. (3) Short-circuit to
ground, one amplifier per package.
(3)
(2)
................... (V–) –0.5V to (V+) + 0.5V
(2)
Current
.............................................................. Continuous
.................................................... 10mA
(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY
Quad
BUF04701 MSOP-10 DGS –40°C to +125°C BUF04701 BUF04701AIDGSR Tape and Reel, 2500
BUF04701 TSSOP-14 PW –40°C to +125°C 04701A BUF04701AIPWR Tape and Reel, 2500
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
(1)
SPECIFIED
PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
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BUF04701
SBOS214B
ELECTRICAL CHARACTERISTICS: VS = +3.5V to +12V
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C
At TA = +25°C, RL = 10kΩ connected to VS/ 2 and V
PARAMETER CONDITION MIN TYP MAX UNITS
OFFSET VOLTAGE
Input Offset Voltage V
Drift dV
vs Power Supply PSRR V
/dT ±8 µV/°C
OS
Over Temperature V
Channel Separation, DC 1 µV/V
f = 10kHz 110 dB
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
INPUT BIAS CURRENT
Input Bias Current I
INPUT IMPEDANCE
Common-Mode 5 • 10
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz V
Input Voltage Noise Density, f = 10kHz e
Input Current Noise Density, f = 1kHz i
TRANSFER CHARACTERISTIC
Gain 0.9975 1.000 1.0025
over Temperature 0.995 1.000 1.005
OUTPUT
Voltage Output Swing from Rail R
over Temperature R
Short-Circuit Current I
FREQUENCY RESPONSE C
Bandwidth –3dB BW 8 MHz
Slew Rate SR V
Settling Time, 0.1% t
Overload Recovery Time V
Total Harmonic Distortion + Noise THD+N V
POWER SUPPLY
Specified Voltage Range, Single Supply V
Specified Voltage Range, Dual Supplies ±1.75 ±6V
Operating Voltage Range +3.5 to +12 V
Quiescent Current (per amplifier) I
over Temperature 1.7 mA
TEMPERATURE RANGE
Specified Range –40 +125 °C
Operating Range –40 +125 °C
Storage Range –65 +150 °C
Thermal Resistance
θ
TSSOP Surface Mount 100 °C/W
MSOP Surface Mount 200 °C/W
= VS/2, unless otherwise noted.
OUT
OS
CM
B
n
n
VS = ±5, VCM = 0 ±1.5 ±7mV
= 3.5V to 12V, VCM = VS/2 – 0.5V 20 100 µV/V
S
= 3.5V to 12V, VCM = VS/2 – 0.5V 200 µV/V
S
VCM = VS/2 1 ±10 pA
= ±6V, VCM = 0 11 µVrms
S
VS = ±6V, VCM = 0 30 nV/√Hz
VS = ±6V, VCM = 0 2.5 fA/√Hz
R
SC
S
S
Q
JA
VS = ±6V, 5V Step 9 µs
= ±6V, VO = 1Vrms, G = 1, 0.001 %
S
f = 6kHz, V
BUF04701
Limited by Output Range
12
|| 4 Ω || pF
= 10kΩ 75 mV
L
= 2kΩ 150 200 mV
L
= 2kΩ 250 mV
L
= 10pF
L
= ±6V 10 V/µs
S
= V
IN
S
= VS/2
CM
±32 mA
0.2 µs
3.5 12 V
IO = 0 1.1 1.5 mA
BUF04701
SBOS214B
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TYPICAL CHARACTERISTICS
At TA = +25°C, VS = ±6V, and RL = 10kΩ, unless otherwise noted.
120
V+
100
V–
80
60
PSRR (dB)
40
20
0
10 100 1k 10k 100k 1M
140
120
100
80
PSRR vs FREQUENCY
Frequency (Hz)
CHANNEL SEPARATION vs FREQUENCY
7
6
5
4
3
Amplitude (V)
2
1
0
10 100 1k 10k 100k 1M 10M
10k
1k
100
MAXIMUM AMPLITUDE vs FREQUENCY
VS = ± 6V
Frequency (Hz)
INPUT CURRENT AND VOLTAGE SPECTRAL
NOISE vs FREQUENCY
10k
1k
100
60
40
Channel Separation (dB)
20
0
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
20
10
CL = 10pF
0
Gain (dB)
–10
–20
10k 100k 1M 10M 100M
GAIN vs FREQUENCY
RL = 10kΩ
R
C
L
L
RL = 200Ω
RL = 100Ω
Frequency (Hz)
RL = 1kΩ
RL = 500Ω
R
= 350Ω
L
10
Voltage Noise (nV/√Hz)
1
0.1
0.1 1 10 100 1k 10k 100k 1M
Frequency (Hz)
20
10
RL = 200Ω
0
Gain (dB)
–10
–20
10k 100k 1M 10M 100M
GAIN vs FREQUENCY
R
C
L
L
Frequency (Hz)
CL = 1000pF
CL = 500pF
= 100pF
C
L
CL = 10pF
10
1
0.1
Current Noise (fA/√Hz)
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BUF04701
SBOS214B
TYPICAL CHARACTERISTICS (Cont.)
120
110
100
90
80
70
60
–100 –75 –50 –25 0 25 50 75 100 125 150 175
PSRR vs TEMPERATURE
PSRR (dB)
Temperature (°C)
At TA = +25°C, VS = ±6V, and RL = 10kΩ, unless otherwise noted.
INPUT BIAS CURRENT (I
15
10
5
0
(pA)
B
I
–5
–10
–15
–6 –5 –4 –3 –2 –10 1 2 3 4 5 6
100k
10k
1k
100
VOLTAGE (V
INPUT BIAS (I
CM
VS = ±5V
vs TEMPERATURE
) vs COMMON-MODE
B
) TEMPERATURE = 25ºC
VCM (V)
) AND CURRENT
B
I
B
INPUT BIAS CURRENT (IB) vs COMMON-MODE
500
400
300
200
100
0
(pA)
B
I
–100
–200
–300
–400
–500
–6 –5 –4 –3 –2 –1
VOLTAGE (V
VS = ±5V
) TEMPERATURE = 85°C
CM
0
123456
VCM (V)
10
Bias Current (pA)
1.0
0.1
0.01
–50 –25 0 25 50 75 100 125 150 175
Temperature (°C)
2.0
1.5
1.0
per Amplitude (mA)
Q
0.5
I
0.0
–100 –75 –50 –25 0 25 50 75 100 125 150 175
QUIESCENT CURRENT vs TEMPERATURE
Temperature (°C)
1.005
1.000
Gain (V/V)
0.995
–100 –50 0 50 100 150 ??
GAIN vs TEMPERATURE
Temperature (°C)
BUF04701
SBOS214B
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