max9789a Maxim Integrated Products, Inc., max9789a Datasheet - Page 5

• Manufacturer Part Number: max9789a
• Description: Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

ELECTRICAL CHARACTERISTICS (continued)
(V
I
A
(V
unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A
unless otherwise noted. Headphone mode: SPKR_EN = 1, HP_EN = 0. Speaker mode: SPKR_EN = 0, HP_EN = 1.)
Note 1: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Note 2: Specified at room temperature with an 8 resistive load connected across BTL output for speaker amplifier. Specified at
Note 3: Amplifier inputs AC-coupled to GND.
Note 4: Maximum value is due to test limitations.
Note 5: V
LDO_OUT
Current Limit
Startup Time
Line Regulation
Load Regulation
Ripple Rejection
Output Voltage Noise
DIGITAL INPUTS (SPKR_EN, HP_EN, MUTE, GAIN1, GAIN2, LDO_EN (MAX9789A Only))
Input-Voltage High
Input-Voltage Low
Input Bias Current
VHP
DD
DD
-100
-110
-60
-70
-80
-90
TOTAL HARMONIC DISTORTION PLUS NOISE
= PV
= PV
= 3.5dB), T
10
Windows Vista-Compliant, Stereo Class AB Speaker
vs. FREQUENCY (HEADPHONE MODE)
room temperature with a 32 resistive load connected between HPR, HPL, and GND for headphone amplifier. Speaker and
headphone mode transitions are controlled by SPKR_EN and HP_EN control pins, respectively.
(MAX9789A only) = 0, C1 = C2 = C
LDO_OUT
DD
DD
PARAMETER
Amplifiers and DirectDrive Headphone Amplifiers
= CPV
= CPV
100
A
FREQUENCY (Hz)
= T
= V
DD
DD
_______________________________________________________________________________________
MIN
1k
LDO_OUTNOMINAL
= HPV
= HPV
to T
FS = 0.707V
V
R
OUT
L
DD
MAX
= 10kΩ
DD
10k
= -3dB FS
= LDO_EN = +5V, GND = PGND = CPGND = LDO_SET = 0V, C1 = C2 = C
= LDO_EN (MAX9789A only) = +5V, GND = PGND = CPGND = LDO_SET (MAX9789A only) = 0V,
, unless otherwise noted. Typical values are at T
RMS
SYMBOL
100k
V
V
I
LIM
- 2%.
INH
INL
BIAS
-100
-60
-70
-80
-90
V
I
V
1mA < I
V
I
20Hz to 22kHz, C
I
LDO_OUT
LDO_OUT
LDO_OUT
TOTAL HARMONIC DISTORTION PLUS NOISE
= 1µF. R
IN
LDO_OUT
RIPPLE
10
vs. FREQUENCY (HEADPHONE MODE)
= 4.5V to 5.5V, LDO_OUT = 2.5V,
VSP
LDO_OUT
= 200mV
= 10dB, A
L
100
= 1mA
= 10mA
= 120mA
= 4.75V,
= , unless otherwise specified, GAIN1 = 0, GAIN2 = 5V (A
FREQUENCY (Hz)
CONDITIONS
< 120mA
P-P
LDO_OUT
1k
VHP
Typical Operating Characteristics
HPV
FS = 0.707V
V
R
= 3.5dB), measurement BW = 20kHz AES17, T
OUT
L
= 10kΩ
10k
DD
= 2 x 1µF,
= -3dB FS
f = 1kHz
f = 10kHz
= 3V
RMS
A
100k
= +25°C.) (Note 1)
0.001
0.01
0.1
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE (HEADPHONE MODE)
0
MIN
-4.8
R
2
L
f
IN
= 10kΩ
= 10kHz
f
IN
0.5
OUTPUT VOLTAGE (V
= 20Hz
TYP
+0.8
300
125
0.2
BIAS
20
59
42
= C
1.0
IN
MAX
+4.8
0.8
±1
= 1µF. R
RMS
1.5
VSP
A
f
)
IN
= 1kHz
= +25°C,
mV/mA
= 10dB,
UNITS
µV
mV/V
mA
L
dB
µA
µs
RMS
V
V
= ,
2.0
5