MAX4298EUB+-MAX4298EUB+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX4298EUB+T ,Ultra-High PSRR Stereo Drivers + Microphone Amp + 100mA Linear Regulatorfeatures the stereo headphone driver only. The♦ 93dB typ PSRR at 20kHz Operates Directly fromMAX429 ..
MAX4304ESA ,Low-noise, low-distortion op amp. Bandwidth 740MHz. Minimum stable gain 2V/V.ELECTRICAL CHARACTERISTICS(V = +5V, V = -5V, V = 0, R = 100kΩ, T = T to T , unless otherwise noted. ..
MAX4304ESA ,Low-noise, low-distortion op amp. Bandwidth 740MHz. Minimum stable gain 2V/V.ApplicationsMAX4305 10 340 5-pin SOT23, 8-pin SOVideo Buffers and Cable DriversUltrasoundOrdering I ..
MAX4305ESA+ ,740MHz, Low-Noise, Low-Distortion Op Amps in SOT23-5applications. These op amps also feature a wideoutput voltage swing of ±3.7V and ±70mA output curre ..
MAX4308ESA ,400MHz / Ultra-Low-Distortion Op AmpsFeaturesThe MAX4108/MAX4109/MAX4308/MAX4309 op amps' High Speed:combine ultra-high-speed performanc ..
MAX4309ESA ,400MHz / Ultra-Low-Distortion Op AmpsGeneral Description ________
MAX812MEUS-T ,Microprocessor voltage monitor with manual reset input. Reset threshold voltage 4.38V. Push-pull active-high reset output.ELECTRICAL CHARACTERISTICS(V = 5V for L/M versions, V = 3.3V for T/S versions, V = 3V for R version ..
MAX812REUS ,4-Pin µP Voltage Monitors with Manual Reset InputElectrical Characteristics(V = 5V for L/M versions, V = 3.3V for T/S versions, V = 3V for R version ..
MAX812REUS+ ,4-Pin µP Voltage Monitors with Manual Reset Input4-Pin µP Voltage Monitors MAX811/MAX812with Manual Reset Input
MAX812REUS+T ,4-Pin µP Voltage Monitors with Manual Reset InputGeneral Description Benefits and
MAX812REUS-T ,Microprocessor voltage monitor with manual reset input. Reset threshold voltage 2.63V. Push-pull active-high reset output.FeaturesThe MAX811/MAX812 are low-power microprocessor Precision Monitoring of 3V, 3.3V, and 5V (µ ..
MAX812SEUS ,4-Pin µP Voltage Monitors with Manual Reset InputFeaturesThe MAX811/MAX812 are low-power microprocessor• Integrated Voltage Monitor Increases System ..

MAX4298EUB+-MAX4298EUB+T
Ultra-High PSRR Stereo Drivers + Microphone Amp + 100mA Linear Regulator
neral DescriptionThe 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 1.5VRMSsignal into a 10kΩload
with 0.0008% THD+N. They can also drive 32Ωhead-
phones to 1.2VRMSwith 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
FeaturesAudio System IC (MAX4299)
Ultra-High PSRR Stereo Headphone Driver
Ultra-High PSRR Microphone Amp
100mA, 3.3V Linear Regulator93dB typ PSRR at 20kHz Operates Directly from
Noisy Digital SuppliesClickless/Popless Power-Up, Power-Down, Mute
and UnmutePC99-Compliant Output Drivers:
Better than 1VRMSOutput into 16ΩLoad and
1.5VRMSand 0.0008% THD+N into 10kΩLoadPC99-Compliant Microphone Amplifier:
0.005% THD+N into 10kΩLoad22nF Capacitive Load Drive Capability4.5V to 5.5V Single-Supply OperationInternally Generated Bias VoltageAll Gains Externally AdjustableAvailable in Space-Saving Packages
10-Pin μMAX (MAX4298)
16-Pin TSSOP (MAX4299)ltra-High PSRR Stereo Drivers +icrophone Amp + 100mA Linear Regulator
TOP VIEW
VCC
OUT2
IN2
BIAS
IN1
GND
OUT1
MAX4298
μMAX
MUTESVCC
CBYPASS
PSRR vs. Frequency
19-1743; Rev 1; 2/01
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Typical Operating Circuit appears at end of data sheet.
PARTTEMP. RANGEPIN-PACKAGE
MAX4298EUB-40ºC to +85°C10 μMAX
MAX4298ESD-40ºC to +85°C14 SO
MAX4299EWP-40ºC to +85°C20 SO
MAX4299EUE-40ºC to +85°C16 TSSOP
Pin Configurations
1001k10k100k
FREQUENCY (Hz)
(dB
MAX4298/9-13
Pin Configurations continued at end of data sheet.
ltra-High PSRR Stereo Drivers + icrophone Amp + 100mA Linear RegulatorABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= SVCC= +5V, RL= ∞on all outputs, CBYPASS= 1μF, CBIAS= 1μF, CREG= 10μF (MAX4299), TA= TMINto TMAX, unless other-
wise noted. Load resistors (RL) are terminated to 2.25V. Typical values are at TA= +25°C. Specifications apply to both MAX4298 and
MAX4299, unless otherwise noted.) (Note 1)
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.
Supply Voltage (VCC) to GND ...............................................+6V
Standby Supply Voltage (SVCC) to GND...............................+6V
REG, FB, REGON to GND..........................-0.3V to (VCC+ 0.3V)
BIAS, CBYPASS, MUTE, IN_, MICIN to GND..............-0.3V to the
Larger of (VCC+0.3V) or (SVCC+0.3V)
OUT_, MICOUT to GND................................-0.3V to the Smaller
of +5.5V, or (VCC+ 0.3V)
Duration of Output Short-Circuit to GND or VCC................10min
Continuous Power Dissipation
10-Pin μMAX (derate 5.6mW/°C above +70°C)...........444mW
14-Pin SO (derate 8.3mW/°C above +70°C)................667mW
20-Pin SO (derate 10.0mW/°C above +70°C)..............800mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C).........755mW
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply Voltage RangeVCCInferred from PSRR test4.55.5V
MAX429810.217.5Quiescent CurrentICCMAX429910.618.0mA
MAX429810.217.5Mute Quiescent CurrentMAX429910.618.0mA
VBIAS = 1.125V, VCC = 0300500SVCC Current (Note 2)ISVCCVBIAS = 2.25V, VCC = 5.0V7μA
DRIVER AMPLIFIERS
Input Offset VoltageVOS±1±10mV
Input Bias CurrentIBIAS0.2nA
DC, VCC = 4.5V to 5.5V115
f = 20kHz93Power-Supply Rejection
RatioPSRR
f = 100kHz80
RL = 10kΩ1.451.59
RL = 32Ω1.21.53Output DriveVOUT
RL = 16Ω1.01.48
VRMS
AV = -1V/V, f = 1kHz, RL = 10kΩ,
VOUT = 1.5VRMS0.0008
AV = -1V/V, f = 1kHz, RL = 32Ω,
VOUT = 1.2VRMS, (Notes 3, 4)0.020.1THD + Noise
AV = -1V/V, f = 1kHz, RL = 16Ω,
VOUT = 1.0VRMS0.04
Full-Scale Signal-to-Noise Ratio
(Note 4)SNRRL = 10kΩ,
VOUT = 1.06VRMS, AV = -1V/V105dB
Capacitive Drive22nF
Open-Loop Voltage GainAVOLRL = 32Ω, 0.55V ≤ VOUT ≤ VCC - 0.55V7687dB
Unity-Gain BandwidthGBW1.3MHz
ltra-High PSRR Stereo Drivers +icrophone Amp + 100mA Linear RegulatorELECTRICAL CHARACTERISTICS (continued)
(VCC= SVCC= +5V, RL= ∞on all outputs, CBYPASS= 1μF, CBIAS= 1μF, CREG= 10μF (MAX4299), TA= TMINto TMAX, unless other-
wise noted. Load resistors (RL) are terminated to 2.25V. Typical values are at TA= +25°C. Specifications apply to both MAX4298 and
MAX4299, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
BIAS VOLTAGE OUTPUT
DC BIAS VoltageVBIASIL = 02.132.252.37V
Line Regulation120dB
Load RegulationIL = 0 to 1μA50mV
DIGITAL INPUTS (MUTE for MAX4298/MAX4299, and REGON for MAX4299)
Input Voltage HighVINH2.4V
Input Voltage LowVINL0.8V
Input Leakage CurrentIINVIN = 0 or VCC±1μA
MICROPHONE AMPLIFIER (MAX4299 only)
Input Offset VoltageVOS±2±10mV
Input Bias CurrentIBIAS0.2nA
DC, VCC = 4.5V to 5.5V115
f = 20kHz93Power-Supply Rejection RatioPSRR
f = 100kHz80
Voltage GainAVOLRL = 10kΩ, 0.13V ≤ VMICOUT ≤ VCC - 0.13V80100dB
Output DriveVOUTRL = 10kΩ1.41.58VRMS
AV = -1V/V0.005THD + Noise (Note 4)THD+Nf = 1kHz, RL = 10kΩ,
VMICOUT = 1.5VRMSAV = -10V/V0.03%
Full-Scale Signal-to-Noise Ratio
(Note 4)SNRRL = 10kΩ, V M IC OU T = 1.06V R M S , AV = - 10V /V 80dB
All-Hostile Crosstalkf = 10kHz (Note 5)80dB
Unity Gain BandwidthGBW1MHz
REGULATOR (MAX4299 only)
Regulator Output VoltageVREGVCC = 4.5V to 5.5V. IL = 0 to 100mA, using
internal feedback3.153.33.45V
Line RegulationVCC = 4.5V to 5.5V, IL = 50mA0.2mV
IL = 10mA to 100mA30mVLoad RegulationIL = 0 to 100mA50mV
FB VoltageVFBReference for regulator adjustment1.233V
Note 1:All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2:Current drawn from SVCCwhen VCC< 4V.
Note 3:Guaranteed by design.
Note 4:Measurement bandwidth is 20Hz to 22kHz.
Note 5:Voltage at MICOUT with OUT1 = OUT2 = 1VRMSinto 32Ω.
ltra-High PSRR Stereo Drivers + icrophone Amp + 100mA Linear RegulatorMAX4298
SUPPLY CURRENT vs. SUPPLY VOLTAGE
AX4298/99-01
VCC (V)
(m
TA = +85°C
TA = +25°C
TA = -40°C
POWER-UP/POWER-DOWN
AX4298/9-02
TIME (s)
(VOUT
SPEAKER
RL = 32Ω1.00.51.52.0
MUTE PERFORMANCE
AX4298/9-03
TIME (s)
(V
OUT
SPEAKERRL = 32Ω
CAC = 220μF
X4298/99-04
TIME (s)
(V0.51.01.52.0
POWER-DOWN/POWER-UP with SCHOTTKY
DIODE AND RESERVOIR CAPACITOR
VCC = 0
SVCC
VOUT
VCC = 5V
RL = 32Ω
CAC = 22OμF0.0001
100100k10k1k
DRIVER OUT
THD+N vs. FREQUENCY
X4298/99-05
INPUT FREQUENCY (Hz)
(%
BW = 80kHz
BW = 22kHz
RL = 10kΩ
AV = -1
VOUT = 1.5VRMS
100100k10k1k
DRIVER OUT
THD+N vs. FREQUENCY
AX4298/99-06
INPUT FREQUENCY (Hz)
(%
RL = 32Ω
AV = -1
VOUT = 1.2VRMS
BW = 80kHz
BW = 22kHz
100100k10k1k
DRIVER OUT
THD+N vs. FREQUENCY
AX4298/99-07
INPUT FREQUENCY (Hz)
(%
RL = 16Ω
AV = -1
VOUT = 1VRMS
BW = 80kHz
BW = 22kHz
DRIVER OUT
THD+N vs. AMPLITUDE
4298/99toc08
OUTPUT VOLTAGE (VRMS)
(%
AV = -1
RL = 10kΩfIN = 1kHz
BW = 22kHz10
DRIVER OUT
THD+N vs. AMPLITUDE
AX4298/99toc09
OUTPUT VOLTAGE (VRMS)
(%
RL = 32Ω
AV = -1
fIN = 1kHz
BW = 22kHz
Typical Operating Characteristics
(VCC= SVCC= +5V, typical operating circuit, TA= +25°C, unless otherwise noted.)
ltra-High PSRR Stereo Drivers +icrophone Amp + 100mA Linear RegulatorDRIVER OUT
THD+N vs. AMPLITUDE
4298/99toc10
OUTPUT VOLTAGE (VRMS)
(%
RL = 16Ω
AV = -1
fIN = 1kHz
BW = 22kHz
1001k10k100k
DRIVER OUT
CHANNEL SEPARATION
vs. INPUT FREQUENCY
AX4298/9-11
INPUT FREQUENCY (Hz)
(d
OUT2 TO OUT1
OUT1 TO OUT2
RL = 10kΩ
AV = -1
VOUT = 1VRMS
1001k10k100k
DRIVER OUT
MUTED OUTPUT ATTENUATION
vs. INPUT FREQUENCY
AX4298/9-12
INPUT FREQUENCY (Hz)
(d
RL = 16Ω
A = RI = 20kΩ, RF = 20kΩ
B = RI = 10kΩ, RF = 10kΩ
C = RI = 10kΩ, RF = 20kΩ
1001k10k100k
DRIVER OUT
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
AX4298/9-13
FREQUENCY (Hz)
(d
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
32Ω || 15pF
MAX4298/9-14
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
32Ω || 1.5nF
MAX4298/9-15
Typical Operating Characteristics (continued)
(VCC= SVCC= +5V, typical operating circuit, TA= +25°C, unless otherwise noted.)
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
32kΩ || 22nF
MAX4298/9-16
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
10kΩ || 15pF
MAX4298/9-17
DRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
10kΩ || 1.5nF
MAX4298/9-18
ltra-High PSRR Stereo Drivers + icrophone Amp + 100mA Linear RegulatorDRIVER OUT
OPEN-LOOP FREQUENCY RESPONSE
INPUT FREQUENCY (kHz)
0.011010010000.1110,000
(d
(d
GAIN
PHASE
10kΩ || 22nF
MAX4298/99 toc19
MICOUT ALL HOSTILE CROSSTLAK
(INPUT REFERRED)
AX4298/99 toc20
INPUT FREQUENCY (kHz)
(d
AV = -100
MICOUT OPEN LOOP
FREQUENCY RESPONSE
MAX4298/99 toc21
INPUT FREQUENCY (kHz)
(d
PHASE
GAIN
10kΩ || 15pF
10,000
(d
MICOUT OPEN LOOP
FREQUENCY RESPONSE
MAX4298/99 toc22
INPUT FREQUENCY (kHz)
(d
0.011010010000.1110,00010kΩ || 150pF
PHASE
GAIN0.51.01.5
MICOUT
THD+N vs. AMPLITUDE
AX4298/99 toc23
AMPLITUDE (VRMS)
(%
RL = 10kΩ
AV = -1
fIN = 1kHz
BW = 22kHz
REGOUT OUTPUT VOLTAGE
vs. LOAD CURRENT
AX4298/99 toc24
LOAD CURRENT (mA)
(V
200µs/div
REGOUT TRANSIENT RESPONSE
100mA
VOUT
30mV/div
MAX4298/99 toc25
200µs/div
REGOUT TRANSIENT RESPONSE
MAX4298/99 toc26
100mA
VOUT
30mV/div
10mA
Typical Operating Characteristics (continued)
(VCC= SVCC= +5V, typical operating circuit, TA= +25°C, unless otherwise noted.)
ltra-High PSRR Stereo Drivers +icrophone Amp + 100mA Linear Regulatortailed DescriptionThe MAX4298/MAX4299 are audio system ICs de-
signed for single +5V applications. The MAX4299 has a
stereo headphone driver, a microphone amplifier, and
a 100mA +3.3V linear regulator; the MAX4298 has the
stereo headphone driver only. The MAX4298/MAX4299
are designed specifically for harsh digital environments
where board space is at a premium 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. These devices are designed to drive
highly capacitive loads that may be encountered whenriving long cables to a remote load such as
desktop/notebook headphones or speakers. They are
fully compliant to PC99 standards. Figure 1 is the
Pin Description
PIN
MAX4298MAX4298MAX4299MAX4299
10-PIN
μMAX14-PIN SO16-PIN
TSSOP20-PIN SO
NAMEFUNCTION—161REGRegulator Output. Bypass REG to GND with a 10μF
capacitor.—12FB
Regulator Feedback. Internal resistors from this point
to REG and GND define the regulator output value.
Adjustments can be made to the output value by
adding resistors in the same place externally.224OUT1Driver Amplifier Output—35PGNDPower Ground for Driver Outputs346GNDGround457IN1Inverting Input for Driver Amplifier568BIASBias Point for Amplifiers. Bypass BIAS to GND with a
1μF capacitor.679SVCC
Standby Power Supply. Connect to a standby +5V
supply that is always on, or bypass with 220μF and
connect a Schottky diode from VCC to SVCC. Short to
VCC if clickless power-down is not essential.—810MICOUTMicrophone Amplifier Output—911MICINInverting Input for Microphone Amplifier91013MUTE
Mute Digital Input. Connect to GND for normal
operation. When MUTE is connected to VCC, OUT1
and OUT2 are muted, REG stays on, and MICOUT
stays on.101114CBYPASSBypass to GND with a 1μF Capacitor111215IN2Inverting Input for Driver Amplifier121316OUT2Driver Amplifier Output131417VCCPower Supply. Connect to +5V.1, 7, 8, 14—3, 12, 18, 19N.C.No Connection. Not internally connected.—1520REGONRegulator Control. Connect to VCC for normal
operation. Connect to GND to shut off the regulator.

Partno	Mfg	Dc	Qty	Available	Descript
MAX4298EUB+ \|MAX4298EUB	MAXIM	N/a	590	avai	Ultra-High PSRR Stereo Drivers + Microphone Amp + 100mA Linear Regulator
MAX4298EUB+T	MAXIM	N/a	4710	avai	Ultra-High PSRR Stereo Drivers + Microphone Amp + 100mA Linear Regulator