
Ultrasound Variable-Gain Amplifier
ABSOLUTE MAXIMUM RATINGS
V CC , V REF to GND .................................................-0.3V to +5.5V
Any Other Pins to GND...............................-0.3V to (V CC + 0.3V)
VGA Differential Input Voltage (VGIN_+ - VGIN_-)...........8.0V P-P
Analog Gain-Control Input Differential Voltage
(VG_CTL+ - VG_CTL-)...................................................8.0V P-P
Continuous Power Dissipation (T A = +70°C)
Operating Temperature Range...............................0°C to +70°C
Junction Temperature ......................................................+150°C
θ JC (Note 1) .....................................................................+2°C/W
θ JA (Note 1) ...................................................................+22°C/W
Storage Temperature Range .............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
100-Pin TQFP
(derated 45.5mW/°C above +70°C).........................3636.4mW
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial .
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.
DC ELECTRICAL CHARACTERISTICS
(Figure 2, V CC = V REF = 4.75V to 5.25V, V CM = (3/5)V REF , V GND = 0, PD = 0, no RF signals applied, capacitance to GND at each of
the VGA differential outputs is 60pF, differential capacitance across the VGA outputs is 10pF, R L = 1k Ω , T A = 0°C to +70°C. Typical
values are at V CC = V REF = 5V, T A = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
Supply Voltage Range
V CC External Reference Voltage
Range
Total Power-Supply Current
SYMBOL
V CC
V REF
CONDTIONS
(Note 3)
Refers to V CC supply
current plus V REF current
PD = 0
PD = 1
MIN
4.75
4.75
TYP
5
5
204
27
MAX
5.25
5.25
231
33
UNITS
V
V
mA
V CC Supply Current
V REF Current
Current Consumption per
Amplifier Channel
Differential Analog Control
Voltage Range
I VCC
I REF
Refers to V CC supply current
Minimum gain
Maximum gain
192
12
24
+2
-2
216
15
27
mA
mA
mA
V P-P
Differential Analog Control
Common-Mode Voltage
Analog Control Input Source/Sink
Current
V CM
2.85
3.0
4.5
3.15
5
V
mA
LOGIC INPUTS
CMOS Input-High Voltage
CMOS Input-Low Voltage
V IH
V IL
2.3
0.8
V
V
2
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