PA78DK Cirrus Logic Inc, PA78DK Datasheet - Page 4

• Manufacturer Part Number: PA78DK
• Description: IC PWR AMP 350V 200MA 20PSOP
• Manufacturer: Cirrus Logic Inc
• Series: Apex Precision Power™r

Specifications of PA78DK

• Amplifier Type: Power
• Number Of Circuits: 1
• Slew Rate: 350 V/µs
• Gain Bandwidth Product: 1MHz
• Current - Input Bias: 8.5pA
• Voltage - Input Offset: 8000µV
• Current - Supply: 700µA
• Current - Output / Channel: 150mA
• Voltage - Supply, Single/dual (±): 20 V ~ 350 V, ±10 V ~ 175 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-PSOP
• Number Of Channels: 1
• Voltage Gain Db: 120 dB
• Common Mode Rejection Ratio (min): 90 dB
• Input Offset Voltage: 25 mV
• Operating Supply Voltage: 300 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Maximum Dual Supply Voltage: +/- 175 V
• Minimum Operating Temperature: - 40 C
• For Use With: 598-1398 - KIT EVALUATION PA78/PA79
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1351

PA78
4
TYPICAL APPLICATION CIRCUIT
The PA78 is ideally suited for driving continuous drop ink
jet printers, in both piezo actuation and deflection applica-
tions. The high voltage of the amplifier creates an electro-
static field on the deflection plates to control the position of
the ink droplets. The rate at which droplets can be printed
is directly related to the rate at which the amplifier can drive
the plate to a different electrostatic field strength.
TYPICAL PERFORMANCE GRAPhS
300
250
200
350
150
100
100
60
40
20
50
80
0
0
100
POWER SUPPLY REJECTION
1
POWER RESPONSE
NO COMPENSATION
FREQUENCY, (KHz)
FREQUENCY, (Hz)
10
GAIN = -100
+V
S
1K
SUPPLY TO OUTPUT DIFFERENTIAL, V
0.01
100
0.1
GAIN = -50
-V
1
10
S
PULSE CURVES
@ 10% DUTY CYCLE MAX
1000
10K
PA78DK SOA
100
160
140
120
100
12
10
80
60
40
20
PEAK TO PEAK LOAD CURRENT (mA)
0
8
6
4
2
0
0
0
OUTPUT VOLTAGE SWING
RESISTOR VALUE ( )
S
1000
CURRENT LIMIT
-V
50
- V
S
P r o d u c t I n n o v a t i o n F r o m
O
SIDE DROP
+V
–V
(V)
S
S
+V
100
SIDE DROP
50
S
SUPPLY TO OUTPUT DIFFERENTIAL, V
0.01
0.1
1
0-5V
DAC
1.6K
150
10
PULSE CURVES
@ 10% DUTY CYCLE MAX
+335V
100
200
-15V
PA78EU SOA
100
R
R
C
C
C
C
C
C
R
140
120
100
100K
CL
25
20
15
10
80
60
40
20
0
5
0
COMMON MODE REJECTION
0
1
DROPLETS
CASE TEMPERATURE, T
POWER DERATING
25
10
1000
S
FREQUENCY (Hz)
- V
INK
O
(V)
100
50
75
1K
DEFLECTION
PLATE
100
10K 100K
C
(°C)
PA78U
125