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PDF MAX4299EWP Data sheet ( Hoja de datos )
| Número de pieza | MAX4299EWP | |
| Descripción | Ultra-High PSRR Stereo Drivers + Microphone Amp + 100mA Linear Regulator | |
| Fabricantes | Maxim Integrated | |
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19-1743; Rev 1; 2/01
Ultra-High PSRR Stereo Drivers +
Microphone Amp + 100mA Linear Regulator
General Description
The MAX4298 and MAX4299 are audio system ICs
designed for single +5V applications. The MAX4299
features a stereo headphone driver, a microphone
amplifier, and a +3.3V linear regulator; the MAX4298
features the stereo headphone driver only. The
MAX4298/ MAX4299 are designed specifically for harsh
digital environments where board space is at a premi-
um and the digital power supply is noisy. The design
uses innovative design techniques to achieve ultra-high
power-supply rejection across the audio signal band
while, at the same time, delivering a high-current Rail-
to-Rail® output drive capability. The chip is designed to
drive highly capacitive loads that may be encountered
when driving long cables to a remote load such as
desktop/notebook headphones or speakers. These
devices are fully compliant with PC99 standards.
The amplifiers exhibit 115dB of DC power-supply rejec-
tion and 80dB at 100kHz. The output amplifiers are
capable of driving a 1.5VRMS signal into a 10kΩ load
with 0.0008% THD+N. They can also drive 32Ω head-
phones to 1.2VRMS with 0.02% distortion. At +3.3V, the
linear regulator can output 100mA of current. The
MAX4298 is available in a tiny 10-pin µMAX while the
MAX4299 is available in the space-saving 16-pin
TSSOP package.
________________________Applications
Notebook and Desktop Audio
Hands-Free Headsets
USB Audio Peripherals
IP Telephones
Wireless Internet Devices
MP3 Players/Recorders
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PSRR vs. Frequency
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
100
1k 10k
FREQUENCY (Hz)
100k
Features
o Audio System IC (MAX4299)
Ultra-High PSRR Stereo Headphone Driver
Ultra-High PSRR Microphone Amp
100mA, 3.3V Linear Regulator
o 93dB typ PSRR at 20kHz Operates Directly from
Noisy Digital Supplies
o Clickless/Popless Power-Up, Power-Down, Mute
and Unmute
o PC99-Compliant Output Drivers:
Better than 1VRMS Output into 16Ω Load and
1.5VRMS and 0.0008% THD+N into 10kΩ Load
o PC99-Compliant Microphone Amplifier:
0.005% THD+N into 10kΩ Load
o 22nF Capacitive Load Drive Capability
o 4.5V to 5.5V Single-Supply Operation
o Internally Generated Bias Voltage
o All Gains Externally Adjustable
o Available in Space-Saving Packages
10-Pin µMAX (MAX4298)
16-Pin TSSOP (MAX4299)
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX4298EUB
MAX4298ESD
MAX4299EWP
MAX4299EUE
-40ºC to +85°C
-40ºC to +85°C
-40ºC to +85°C
-40ºC to +85°C
10 µMAX
14 SO
20 SO
16 TSSOP
Typical Operating Circuit appears at end of data sheet.
Pin Configurations
TOP VIEW
OUT1 1
GND 2
IN1 3
BIAS 4
SVCC 5
MAX4298
10 VCC
9 OUT2
8 IN2
7 CBYPASS
6 MUTE
µMAX
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Ultra-High PSRR Stereo Drivers +
Microphone Amp + 100mA Linear Regulator
Typical Operating Characteristics (continued)
(VCC = SVCC = +5V, typical operating circuit, TA = +25°C, unless otherwise noted.)
DRIVER OUT
THD+N vs. AMPLITUDE
10
BW = 22kHz
1
fIN = 1kHz
0.1
0.01
0.001
0.0001
0
RL = 16Ω
AV = -1
0.5 1 1.5
OUTPUT VOLTAGE (VRMS)
2
DRIVER OUT
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
100
1k 10k
FREQUENCY (Hz)
100k
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
90 200MAX4298/9-16
80 180
70 160
60 140
50
PHASE
120
40 100
30 80
20
GAIN
10
60
40
0
32kΩ || 22nF
-10
0.01 0.1 1
20
0
10 100 1000 10,000
INPUT FREQUENCY (kHz)
-60
-70
-80
-90
-100
-110
-120
100
DRIVER OUT
CHANNEL SEPARATION
vs. INPUT FREQUENCY
OUT2 TO OUT1
OUT1 TO OUT2
RL = 10kΩ
AV = -1
VOUT = 1VRMS
1k 10k
INPUT FREQUENCY (Hz)
100k
DRIVER OUT
MUTED OUTPUT ATTENUATION
vs. INPUT FREQUENCY
-80
-85
-90
B
-95 C
A
-100
-105
-110
-115
-120
100
RL = 16Ω
A = RI = 20kΩ, RF = 20kΩ
B = RI = 10kΩ, RF = 10kΩ
C = RI = 10kΩ, RF = 20kΩ
1k 10k
INPUT FREQUENCY (Hz)
100k
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
90 200MAX4298/9-14
80 180
70 160
60 140
50
PHASE
120
40 100
30 80
20
GAIN
10
60
40
0
32Ω || 15pF
-10
0.01 0.1 1
20
0
10 100 1000 10,000
INPUT FREQUENCY (kHz)
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
90 200MAX4298/9-17
80 180
70 160
60 140
50
PHASE
120
40 100
30 80
20 GAIN
10
60
40
0
10kΩ || 15pF
-10
0.01 0.1 1
20
0
10 100 1000 10,000
INPUT FREQUENCY (kHz)
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
90 200MAX4298/9-15
80 180
70 160
60 140
50
PHASE
120
40 100
30 80
20 GAIN
10
60
40
0
32Ω || 1.5nF
-10
0.01 0.1 1
20
0
10 100 1000 10,000
INPUT FREQUENCY (kHz)
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
90 200MAX4298/9-18
80 180
70 160
60 140
50
PHASE
120
40 100
30 80
20 GAIN
10
60
40
0
10kΩ || 1.5nF
-10
0.01 0.1 1
20
0
10 100 1000 10,000
INPUT FREQUENCY (kHz)
_______________________________________________________________________________________ 5
5 Page 
Ultra-High PSRR Stereo Drivers +
Microphone Amp + 100mA Linear Regulator
Pin Configurations (continued)
TOP VIEW
REG 1
FB 2
N.C. 3
OUT1 4
PGND 5
GND 6
IN1 7
BIAS 8
SVCC 9
MICOUT 10
MAX4299
20 REGON
FB 1
19 N.C.
OUT1 2
18 N.C.
PGND 3
17 VCC
16 OUT2
GND 4
IN1 5
15 IN2
BIAS 6
14 CBYPASS SVCC 7
13 MUTE MICOUT 8
12 N.C.
11 MICIN
MAX4299
TSSOP
16 REG
15 REGON
14 VCC
13 OUT2
12 IN2
11 CBYPASS
10 MUTE
9 MICIN
N.C. 1
OUT1 2
GND 3
IN1 4
BIAS 5
SVCC 6
N.C. 7
MAX4298
SO
14 N.C.
13 VCC
12 OUT2
11 IN2
10 CBYPASS
9 MUTE
8 N.C.
WIDE SO
Chip Information
MAX4298 TRANSISTOR COUNT: 760
MAX4299 TRANSISTOR COUNT: 905
PROCESS: BiCMOS
Package Information
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX4299EWP.PDF ] | |
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