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PDF MAX97220B Data sheet ( Hoja de datos )
| Número de pieza | MAX97220B | |
| Descripción | Differential Input DirectDrive Line Drivers/Headphone Amplifiers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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EVALUATION KIT AVAILABLE
MAX97220A–MAX97220E
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
General Description
The MAX97220_ is a differential input DirectDrive® line
driver/headphone amplifier. This device is capable of
driving line level loads with 3VRMS into 1kI with a 5V
supply and 2VRMS into 600I loads from a 3.3V supply. A
headphone load is capable of being driven with 125mW
into 32I with a 5V supply. The IC is offered with an inter-
nally fixed 6dB gain or an externally set gain through
external resistors. The external gain setting nodes can
also be used to configure filters for set-top box applica-
tions. The IC has exceptional THD+N over the full audio
bandwidth.
Two versions of the IC are available with different turn-
on times (tON). The A, C, and E versions for headphone
applications feature a tON of 5.5ms while the B and D
versions, intended for set-top-box applications, feature a
130ms tON. An on-chip charge pump inverts the power-
supply input, creating a negative rail. The output stage of
the amplifier is powered between the positive input sup-
ply and the output of the charge pump. The bipolar sup-
plies bias the output about ground, eliminating the need
for large, distortion-introducing output coupling capaci-
tors. The IC powers on and off without clicks or pops.
The IC is available in a 3mm x 3mm x 0.8mm, 16-pin
TQFN and is specified over the extended -40NC to +85NC
temperature range.
Applications
Simple Multimedia Interfaces
Set-Top Boxes
Blu-rayK and DVD Players
LCD Televisions
Prosumer Audio Devices
Features
S Output Power 125mW into 32I with a 5V Supply
S 3VRMS Output Drive into 1kI with a 5V Supply
S 2VRMS Output Drive into 600I with a 3.3V Supply
S Fully Differential Inputs
S Fixed or Externally Adjustable Gain with No
Clicks or Pops
S Wide 2.5V to 5.5V Operating Range
S DirectDrive Outputs Eliminate DC-Blocking
Capacitors
S Flat THD+N, Better Than 90dB in the Audio Band
S 18-Bit SNR Performance, 112dB
S Footprint Compatible with the MAX9722
Ordering Information
PART
PIN-
TOP GAIN TURN-ON
PACKAGE MARK SET TIME (ms)
MAX97220AETE+ 16 TQFN-EP* +AIF External 5.5
MAX97220BETE+ 16 TQFN-EP* +AIG External 130
MAX97220CETE+ 16 TQFN-EP* +AIH +6dB
5.5
MAX97220DETE+ 16 TQFN-EP* +AII +6dB
130
MAX97220EETE+ 16 TQFN-EP* +AII External 5.5
Note: All devices operate over the -40NC to +85NC temperature
range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Blu-ray is a trademark of the Blu-ray Disc Association.
Functional Diagrams appear at end of data sheet.
Simplified Block Diagrams
RF
RIN
LEFT
AUDIO
INPUT
RIN
INL-
INL+
OUTL
RF
RIN RF
RIGHT
AUDIO
INPUT RIN
MAX97220A/B/E
INR+
OUTR
INR-
RF
INL-
LEFT
AUDIO
INPUT INL+
RIN
RIN
RF
INR+
RIGHT
AUDIO
INPUT INR-
RIN RF
RIN
RF
OUTL
MAX97220C/D
SGND
SGND
OUTR
RF
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5611; Rev 2; 7/12
1 page  
MAX97220A–MAX97220E
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VPVDD = VSVDD = VSVDD2 = 5V, VPGND = VSGND = 0V, CBIAS = 0.1µF, C1 = C2 = 1µF, RIN = 20kω, RF = 20kω (MAX97220A/
MAX97220B/MAX97220E), typical values tested at TA = +25°C, unless otherwise noted.) (Notes 2 and 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
32 samples per second, Into shutdown
-70
A-weighted, RL = 10kI,
unity gain
Out of
shutdown
-70
Click-and-Pop Level (Note 5)
KCP
32 samples per second, Into shutdown
-76
dBV
A-weighted, RL = 32I,
unity gain
Out of
shutdown
-76
LOGIC INPUT (SHDN)
SHDN Input Logic-High
SHDN Input Logic-Low
VIH
VIL
1.4 V
0.4 V
SHDN Input Leakage Current
High
IIH TA = +25NC
1 FA
SHDN Input Leakage Current Low IIL TA = +25NC
1 FA
Note 2: 100% production tested at TA = +25NC. Specifications over temperature limits are guaranteed by design.
Note 3: Dynamic specifications are taken over 2.5V to 5.5V supply range. Inputs AC-coupled to PGND.
Note 4: The maximum differential input signal does not cause any excess distortion due to violation of the common-mode input
range.
Note 5: Test performed with a resistive load connected to PGND. Mode transitions are controlled by SHDN. KCP level is calcu-
lated as 20 x log (peak voltage during mode transition, no input signal).
Typical Operating Characteristics
(VPVDD = VSVDD = VSVDD2 = 5V, VPGND = VSGND = 0V, CBIAS = 0.1µF, C1 = C2 = 1µF, RIN = 10kω, RF = 10kω, unless otherwise noted.)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
0
-10
-20
VPVDD = 3.3V
RL = 600I
BW = 22Hz TO 22kHz
-30
-40
-50
-60
-70
-80 VOUT = 1VRMS
-90
-100
-110
-120
0.01
0.1
VOUT = 2VRMS
1 10 100
FREQUENCY (kHz)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
0
-10
-20
VPVDD = 5V
RL = 10kI
BW = 22Hz TO 22kHz
-30
-40
-50
-60
-70
-80 VOUT = 1VRMS
-90
-100
-110
-120
0.01
0.1
VOUT = 3VRMS
1 10 100
FREQUENCY (kHz)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
100
VPVDD = 3.3V
10 RL = 32I
1
0.1
POUT = 30mW
0.01
0.001
0.0001
0.01
POUT = 10mW
0.1 1 10
FREQUENCY (kHz)
100
Maxim Integrated
5
5 Page 
MAX97220A–MAX97220E
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
Pin Configuration
TOP VIEW
12 11 10 9
SVDD 13
INL- 14
INL+ 15
SHDN 16
MAX97220
+ EP
1234
8 INR-
7 INR+
6 SGND
5 PVSS
TQFN
Pin Description
PIN NAME
FUNCTION
1
PVDD
Charge-Pump Power-Supply Input. Bypass to PGND with 1FF.
2 C1P Positive Flying Capacitor Connection. Connect a 1FF capacitor between C1P and C1N.
3
PGND
Power Ground. Connect PGND and SGND together at the system ground plane.
4
C1N
Negative Flying Capacitor Connection. Connect a 1FF capacitor between C1P and C1N.
5
PVSS
Negative Charge-Pump Output. Bypass to PGND with 1FF.
6
SGND
Signal Ground. Connect PGND and SGND together at the system ground plane.
7
INR+
Right Positive Polarity Input
8
INR-
Right Negative Polarity Input
9 SVDD2 Signal Path Power-Supply Input. Bypass to PGND with 1FF. Connect directly to PVDD.
10
OUTR
Right DirectDrive Output
11
BIAS
Internal Supply Node. Bypass to PGND with 0.1FF.
12
OUTL
Left DirectDrive Output
13
SVDD
Signal Path Power-Supply Input. Bypass to PGND with 1FF. Connect directly to PVDD.
14 INL- Left Negative Polarity Input
15
INL+
Left Positive Polarity Input
16
SHDN
Active-Low Shutdown. Drive SHDN high for normal operation.
— EP Exposed Pad. Electrically connect to PGND or leave unconnected.
Maxim Integrated
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX97220B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX97220A | Differential Input DirectDrive Line Drivers/Headphone Amplifiers | Maxim Integrated Products |
| MAX97220B | Differential Input DirectDrive Line Drivers/Headphone Amplifiers | Maxim Integrated Products |
| MAX97220C | Differential Input DirectDrive Line Drivers/Headphone Amplifiers | Maxim Integrated Products |
| MAX97220D | Differential Input DirectDrive Line Drivers/Headphone Amplifiers | Maxim Integrated Products |
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