PA95 Cirrus Logic Inc, PA95 Datasheet - Page 4

• Manufacturer Part Number: PA95
• Description: OP AMP HV 900V .100A 8-SIP DQ
• Manufacturer: Cirrus Logic Inc
• Series: Apex Precision Power™r

Specifications of PA95

• Amplifier Type: Power
• Number Of Circuits: 1
• Slew Rate: 30 V/µs
• Gain Bandwidth Product: 10MHz
• Current - Input Bias: 200pA
• Voltage - Input Offset: 500µV
• Current - Supply: 1.6mA
• Current - Output / Channel: 100mA
• Voltage - Supply, Single/dual (±): 100 V ~ 900 V, ±50 V ~ 450 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 12-SIP (8 leads)
• Number Of Channels: 1
• Voltage Gain Db: 118 dB
• Common Mode Rejection Ratio (min): 80 dB
• Input Offset Voltage: 5 mV
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Maximum Dual Supply Voltage: +/- 450 V
• Minimum Operating Temperature: - 25 C
• For Use With: 598-1462 - EVALUATION KIT FOR PA94/PA95
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: In Transition
• Other names: 598-1335

PA95
TYPICAL APPLICATION
Piezo positioning may be applied to the focusing of seg-
mented mirror systems. The composite mirror may be
composed of hundreds of elements, each requiring focus-
ing under computer control. In such complex systems the
PA95 reduces the costs of power supplies and cooling
with its advantages of low cost and low quiescent power
consumption while increasing circuit density with the SIP
package.
PHASE COMPENSATION
C
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification interpretation. Visit www.cirrus.com for design tools
that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selec-
tion; Apex Precision Power’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
CURRENT LIMIT
For proper operation, the current limit resistor (R
gram. The minimum value is 3.5 ohm, however for optimum reliability the resistor value should be set as high as
possible. The value is calculated as follows; with the maximum practical value of 150 ohms.
COMMON MODE INPUT RANGE
Operational amplifiers are usually designed to have a common mode input voltage range that approximates the
power supply voltage range. However, to keep the cost as low as possible and still meet the requirements of most
applications the common mode input voltage range of the PA95 is restricted. The input pins must always be a least
30V from either supply voltage but never more than 500V. This means that the PA95 cannot be used in applications
where the supply voltages are extremely unbalanced. For example, supply voltages of +800V and –100V would not
be allowed in an application where the non-inverting pin is grounded because in normal operation both input pins
would be at 0V and the difference voltage between the positive supply and the input pins would be 800V. In this
kind of application, however, supply voltages +500V and -100V does meet the input common mode voltage range
4
C
rated for full supply voltage.
200
120
100
70
50
30
20
10
40
20
0
CURRENT LIMIT RESISTOR, R
10
3
GAIN
≥100
5
100
FREQUENCY, F (Hz)
CURRENT LIMIT
10
1K 10K 100K 1M 10M
4.7pF
R
LIM
20
C
=
C
.7
I
50
LIM
100
CL
150
(Ω)
SUPPLY TO OUTPUT DIFFERENTIAL, V
250
150
100
50
25
15
10
8
4
5
50
0
SAFE OPERATING AREA
PULSE CURVES @
10% DUTY CYCLE MAX
OUTPUT CURRENT, I
LIM
20
100
) must be connected as shown in the external connection dia-
P r o d u c t T e c h n o l o g y F r o m
40
200
60
COMPUTER
COMMAND
VOLTAGE
FOCUS
500
O
80
(mA)
S
100
1K
–V
R
O
IN
(V)
100
20
15
10
50
7
5
3
2
2
1
10K
10
+V
–V
PA95
12
S
10
S
R
FREQUENCY, F (Hz)
100
FREQUENCY, F (Hz)
F
8
INPUT NOISE
R
7
1K
CL
100K
10K
PIEZO DRIVE
PA95U
V
300K
OUT
1M