Datasheet HA-5340 Datasheet (Intersil Corporation)

HA-5340

Data Sheet September 1998 File Number 2859.3

700ns, Low Distortion, Precision Sample
and Hold Amplifier

The HA-5340 combines the advantages of two sample/ hold
architectures to create a new generation of monolithic
sample/hold. High amplitude, high frequency signals can be
sampled with very low distortion being introduced. The
combination of exceptionally fast acquisition time and
specified/characterized hold mode distortion is an industry
first. Additionally, the AC performance is only minimally
affected by additional hold capacitance.

To achieve this level of performance, the benefits of an
integrating output stage have been combined with the
advantages of a buff ered hold capacitor. To the user this
translates to a front-endstagethat has high bandwidth due to
charging only a small capacitive load and an output stage with
constant pedestal error which can be nulled out using the
offset adjust pins. Since the performance penalty for
additional hold capacitance is low , the designer can further
minimize pedestal error and droop rate without sacrificing
speed.

Low distortion, fast acquisition, and low droop rate are the
result, making the HA-5340 the obvious choice for high
speed, high accuracy sampling systems. For a Military
temperature range version request the HA-5340/883 data
sheet.

Ordering Information

TEMP.

PART NUMBER

RANGE (oC) PACKAGE

HA3-5340-5 0 to 75 14 Ld PDIP E14.3
HA9P5340-5 0 to 75 16 Ld SOIC M16.3

PKG.

NO.

Functional Diagram

C

HOLD EXTERNAL

(OPTIONAL)

11

6

SIGNAL GND

C

HOLD

120pF
C

COMP

15pF

7

OUT

-IN

+IN

S/H

CONTROL

ADJUST OFFSET

437

1
2

14

95 13

V+

SUPPLYV-

GND

Features

• Fast Acquisition Time (0.01%) . . . . . . . . . . . . . . . . .700ns

• Fast Hold Mode Settling Time (0.01%). . . . . . . . . . . .200n

• Low Distortion (Hold Mode) . . . . . . . . . . . . . . . . . . -72dBc

(VIN = 200kHz, fS = 450kHz, 5V

• Bandwidth Minimally Affected By External C

P-P

)

H

• Fully Differential Analog Inputs

• Built-In 135pF Hold Capacitor

• Pin Compatible with HA-5320

Applications

• High Bandwidth Precision Data Acquisition Systems

• Inertial Navigation and Guidance Systems

• Ultrasonics

• SONAR

• RADAR

Pinouts

HA-5340

(PDIP)

TOP VIEW

-IN

+IN
OFFSET ADJ.
OFFSET ADJ.

SIG. GND

OUTPUT

-IN

+IN
OFFSET ADJ.
OFFSET ADJ.

NC

SIG. GND

OUTPUT

V-

V-

1
2
3
4
5
6
7

HA-5340

(SOIC)

TOP VIEW

1
2
3
4
5
6
7
8

S/H CONTROL

14
13

SUPPLY GND

12

NC
EXTERNAL

11

HOLD CAP.

10

NC

9

V+

8

NC

16

S/H CONTROL
SUPPLY GND

15

NC

14

NC

13

EXTERNAL

12

HOLD CAP.
NC

11

NC

10

V+

9

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

| Copyright © Intersil Corporation 1999

HA-5340

Absolute Maximum Ratings Thermal Information

Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 36V

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V

Digital Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +8V, -6V

Output Current, Continuous. . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA

Operating Conditions

Temperature Range

HA-5340-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC

Supply Voltage Range (Typical). . . . . . . . . . . . . . . . . ±12V to ±18V

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. Maximum power dissipation must be designed to maintain the junction temperature below 150oC for the plastic packages.

2. θJA is measured with the component mounted on an evaluation PC board in free air.

Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC (oC/W)

PDIP Package . . . . . . . . . . . . . . . . . . . 90 N/A

SOIC Package . . . . . . . . . . . . . . . . . . . 95 N/A

Maximum Junction Temperature (Plastic Package, Note 1) . .150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

Electrical Specifications V

Gain Configuration (Output tied to -Input), R

PARAMETER TEST CONDITIONS TEMP. (

INPUT CHARACTERISTICS

Input Voltage Range Full -10 - +10 V
Input Resistance (Note 3) 25 - 1 - MΩ
Input Capacitance 25 - - 3 pF
Input Offset Voltage 25 - - 1.5 mV

Offset Voltage Temperature Coefficient Full - - 30 µV/oC
Bias Current 25 - ±70 - nA

Offset Current 25 - ±50 - nA

Common Mode Range Full -10 - +10 V
CMRR ±10V, Note 4 25 - 83 - dB

TRANSFER CHARACTERISTICS

Gain DC 25 110 140 - dB
Gain Bandwidth Product CH External = 0pF Full - 10 - MHz

TRANSIENT RESPONSE

Rise Time 200mV Step 25 - 20 30 ns
Overshoot 200mV Step 25 - 35 50 %
Slew Rate 10V Step 25 40 60 - V/µs

DIGITAL INPUT CHARACTERISTICS

Input Voltage V

Input Current VIL = 0V Full - 7 40 µA

= ±15.0V; CH = Internal = 135pF; Digital Input: VIL = +0.8V (Sample), VIH = +2.0V (Hold). Non-Inverting Unity

SUPPLY

CH External = 100pF Full - 9.6 - MHz
CH External = 1000pF Full - 6.7 - MHz

IH

V

IL

VIH = 5V Full - 4 40 µA

= 2kΩ, CL = 60pF, Unless Otherwise Specified

L

o

C)

Full - - 3.0 mV

Full - - ±350 nA

Full - - ±350 nA

Full 72 - - dB

Full 2.0 - - V
Full - - 0.8 V

HA-5340-5

UNITSMIN TYP MAX

2

HA-5340

Electrical Specifications V

= ±15.0V; CH = Internal = 135pF; Digital Input: VIL = +0.8V (Sample), VIH = +2.0V (Hold). Non-Inverting Unity

SUPPLY

Gain Configuration (Output tied to -Input), RL = 2kΩ, CL = 60pF, Unless Otherwise Specified (Continued)

HA-5340-5

PARAMETER TEST CONDITIONS TEMP. (

o

C)

UNITSMIN TYP MAX

OUTPUT CHARACTERISTICS

Output Voltage Full -10 - +10 V
Output Current Full -10 - +10 mA
Full Power Bandwidth (Note 5) Full 0.6 0.9 - MHz
Output Resistance Hold Mode 25 - 0.05 0.1 Ω

Full - 0.07 0.15 Ω

Total Output Noise
DC to 10MHz

Sample Mode 25 - 325 400 µV
Hold Mode 25 - 325 400 µV

DISTORTION CHARACTERISTICS

SAMPLE MODE

Signal to Noise Ratio (RMS Signal to RMS Noise) V

= 200kHz, 20V

IN

Total Harmonic Distortion VIN = 200kHz, 5V

VIN = 200kHz, 10V
VIN = 200kHz, 20V
VIN = 500kHz, 5V

Intermodulation Distortion VIN = 10V

, f1 = 20kHz,

P-P

P-P

P-P

P-P
P-P

P-P

Full - 115 - dB
Full -90 -100 - dBc
Full -76 -82 - dBc
Full -70 -74 - dBc
Full -66 -75 - dBc

Full -78 -83 - dBc

f2 = 21kHz

HOLD MODE (50% Duty Cycle S/H)

Signal to Noise Ratio
(RMS Signal to RMS Noise) f

= 450kHz

S

VIN = 200kHz, 5V
VIN = 200kHz, 10V

P-P

P-P

25 - 76 - dB
25 - 76 - dB

Total Harmonic Distortion

= 450kHz VIN = 200kHz, 5V

f

S

VIN = 200kHz, 10V
VIN = 200kHz, 20V

fS = 450kHz VIN = 100kHz, 5V

VIN = 100kHz, 10V
VIN = 100kHz, 20V

fS = 2fIN(Nyquist) VIN = 20kHz, 5V

VIN = 50kHz, 5V
VIN = 100kHz, 5V

P-P

P-P
P-P

P-P

P-P

P-P
P-P
P-P

P-P

25 - -72 - dBc
25 - -66 - dBc
25 - -56 - dBc
25 - -84 - dBc
25 - -71 - dBc
25 - -61 - dBc
25 - -95 - dBc
25 - -91 - dBc
25 - -82 - dBc

Intermodulation Distortion

= 450kHz VIN = 10V

f

S

P-P

25 - -79 - dBc

(f1 = 20kHz, f2 = 21kHz)

SAMPLE AND HOLD CHARACTERISTICS

Acquisition Time 10V Step to 0.01% 25 - 700 - ns

Full - - 900 ns

10V Step to 0.1% 25 - 430 600 ns

Droop Rate CH = Internal 25 - 0.1 - µV/µs

Full - - 95 µV/µs
Hold Step Error VIL = 0V, VIH = 4.0V, tR = 5ns 25 - 15 - mV
Hold Mode Settling Time To ±1mV Full - 200 300 ns
Hold Mode Feedthrough 20V

, 200kHz, Sine Full - -76 - dB

P-P

EADT (Effective Aperture Delay Time) 25 - -15 - ns
Aperture Uncertainty 25 - 0.2 - ns

RMS
RMS

3

HA-5340

Electrical Specifications V

= ±15.0V; CH = Internal = 135pF; Digital Input: VIL = +0.8V (Sample), VIH = +2.0V (Hold). Non-Inverting Unity

SUPPLY

Gain Configuration (Output tied to -Input), RL = 2kΩ, CL = 60pF, Unless Otherwise Specified (Continued)

HA-5340-5

PARAMETER TEST CONDITIONS TEMP. (

o

C)

UNITSMIN TYP MAX

POWER SUPPLY CHARACTERISTICS

Positive Supply Current Full - 19 25 mA
Negative Supply Current Full - 19 25 mA
PSRR 10% Delta Full 75 82 - dB

NOTES:

3. Derived from Computer Simulation only, not tested.

4. +CMRR is measured from 0V to +10V, -CMRR is measured from 0V to -10V.

5. Based on the calculation FPBW = Slew Rate/2πV

PEAK

(V

PEAK

= 10V).

Test Circuits and Waveforms

1

S/H

CONTROL

INPUT

-INPUT

2

+INPUT

14

S/H CONTROL

HA-5340

OUTPUT

(CH = 135pF = INTERNAL)

FIGURE 1. HOLD STEP ERROR AND DROOP RATE

7

11

NC

V

O

S/H CONTROL

V

O

NOTE:

6. Observe the “hold step” voltage V

FIGURE 2. HOLD STEP ERROR FIGURE 3. DROOP RATE TEST

ANALOG

MUX OR
SWITCH

A

IN

20V

P-P

200kHz

SINE WAVE

S/H CONTROL

INPUT

V

IN

HOLD (+4.0V)
SAMPLE (0V)

∆V

O

HOLD (+4.0V)

SAMPLE (0V)

S/H CONTROL

V

O

∆t

NOTES:

7. Observe the voltage “droop”, ∆VO/∆t.

V

P

8. Measure the slope of the output during hold, ∆VO/∆t.

9. Droopcan be positive or negative-usually to one rail or theother

P.

HA-5340

95

1

-IN

2

+IN

14

S/H
CONTROL

SUPPLY

GND

13 6

TO

SUPPLY

COMMON

not to GND.

V-V+

REF

COM

TO

SIGNAL

GND

OUT

NOTE:

10. Feedthrough in

V

OUT

7

dB 20

V

OUT=VP-P

V

= V

IN

log=

P-P

V

OUT

-------------- -

where:

V

IN

, Hold Mode,

FIGURE 4. HOLD MODE FEEDTHROUGH ATTENUATION

4

HA-5340

Application Information

The HA-5340 has the uncommitted differential inputs of an op
amp, allowing the Sample and Hold function to be combined
with many conventional op amp circuits . See the Intersil
Application Note AN517 for a collection of circuit ideas.

Layout

A printed circuit board with ground plane is recommended
for best performance. Bypass capacitors (0.01µF to 0.1µF,
ceramic) should be provided from each power supply
terminal to the Supply Ground terminal on pin 13.

The ideal ground connections are pin 6 (SIG. GND) directly
to the system Signal Ground, and pin 13 (Supply Ground)
directly to the system Supply Common.

Hold Capacitor

The HA-5340 includes a 135pF MOS hold capacitor,
sufficient for most high speed applications (the Electrical
Specifications section is based on this internal capacitor).
Additional capacitance may be added between pins 7 and

11. This external hold capacitance will reduce droop rate at
the expense of acquisition time, and provide other trade-offs
as shown in the Performance Curves.

The hold capacitor C
resistance and low dielectric absorption, to minimize droop
errors. Teflon®, polystyrene and polypropylene dielectric

should have high insulation

H

capacitor types offer good performance over the specified
operating temperature range.

The hold capacitor terminal (pin 11) remains at virtual
ground potential. Any PC connection to this terminal should
be kept short and “guarded” by the ground plane, since
nearby signal lines or power supply voltages will introduce
errors due to drift current.

®Teflon is a registered Trademark of Dupont Corporation.

Typical Application

Figure 5 shows the HA-5340 connected as a unity gain
noninverting amplifier - its most widely used configuration.
As an input device for a fast successive - approximation A/D
converter, it offers very high throughput rate for a monolithic
IC sample/hold amplifier. Also, the HA-5340’s hold step error
is adjustable to zero using the Offset Adjust potentiometer,
to deliver a 12-bit accurate output from the converter.

The HA-5340 output circuit does not include short circuit
protection, and consequently its output impedance remains
low at high frequencies. Thus, the step changes in load
current which occur during an A/D conversion are absorbed
at the S/H output with minimum voltage error. A momentary
short circuit to ground is permissible, but the output is not
designed to tolerate a short of indefinite duration.

V

S/H CONTROL

H

S

-

+15V

15V

OFFSET

ADJUST

≈ ±15mV

50kΩ

3495

1

IN

FIGURE 5. TYPICAL HA-5340 CONNECTIONS; NONINVERTING UNITY GAIN MODE

2

14

HA 5340-

13 6

SYSTEM

POWER

GROUND

SYSTEM

SIGNAL

GROUND

C

H

11

HI 774-

120pF

15pF

7

CONVERT

13

INPUT

5

R/

C

9

ANALOG
COMMON

NOTE: Pin Numbers Refer to

DIP Package Only.

DIGITAL

OUTPUT

5

HA-5340

Typical Performance Curves T

S/H

CONTROL

V

OUT

FIGURE 6. T

4V

0V

POS 0 TO +10 STEP FIGURE 7. T

ACQ

A

30
28
26
24
22
20
18
16
14
12
10

8

DROOP RATE (µV/µs)

6
4

75oC

2
0

1 10 100 1000

100oC

EXTERNAL HOLD CAPACITANCE (pF)

= 25oC, VS = ±15V, Unless Otherwise Specified

S/H

0V

10V

125oC

CONTROL

V

OUT

2300

2100

1900

1700

1500

1300

1100

900

ACQUISITION TIME TO±1mV (ns)

700

0 400 800 1200 1600 2000 2400

4V

0V

0pF

470pF

1000pF

vs ADDITIONAL C

ACQ

2200pF

H

EXTERNAL HOLD CAPACITANCE (pF)

FIGURE 8. DROOP RATE vs HOLD CAPACITANCE FIGURE 9. ACQUISITION TIME (0.01%) vs HOLD CAPACITANCE

13

CH = INTERNAL

12

TEMPERATURE = 25

11

o

C

10

9
8
7
6

VIH = 3V
5
4
3

HOLD STEP ERROR (mV)

2
1
0

5101520

T

RISE

(ns)

FIGURE 10. HOLD STEP ERROR vs T

VIH = 4V

RISE

20

VIH= 4V
C

= 470pF

H

10

0

HOLD STEP ERROR (mV)

-10

-55 -35 -15 0 25 50 75 100 125

o

TEMPERATURE (

C)

FIGURE 11. HOLD STEP ERROR vs TEMPERATURE

6

HA-5340

Typical Performance Curves T

14

T

= 5ns

RISE

TA = 25oC

12

10

8

6

HOLD STEP ERROR (mV)

4

2

0 200 400 600 800 1000

EXTERNAL HOLD CAPACITANCE (pF)

VIH = 4V

= 25oC, VS = ±15V, Unless Otherwise Specified (Continued)

A

20

VIH = 4V, CH = INTERNAL

= 5ns, 10ns, 20ns

t

R

10

0

HOLD STEP ERROR (mV)

-10

-55 -35 -15 0 25 50 75 100 125
TEMPERATURE (

5ns

10ns

20ns

o

C)

FIGURE 12. HOLD STEP ERROR vs HOLD CAPACITANCE FIGURE 13. HOLD STEP ERROR vs TEMPERATURE

40

20

MAGNITUDE (dB)

0

AV = +100, ±15V AND
±12V SUPPLIES (NOTE)

1K 10K 100K 1M 10M

MAGNITUDE

PHASE

180

90

0

-90
PHASE ANGLE (DEGREES)

-180

40

20

MAGNITUDE (dB)

0

CH = 1000pF

C

= 470pF

H

= 0pF

C

H

CH = 1000pF

= 470pF

C

H

C

= 0pF

H

MAGNITUDE

PHASE

AV = +100

NOTE: ±15V and ±12V supplies tracethesame line within
the width of the line, therefore only one line is shown.

1K 10K 100K 1M 10M

180

90

0

-90
PHASE ANGLE (DEGREES)

-180

FIGURE 14. CLOSED LOOP PHASE/GAIN FIGURE 15. CLOSED LOOP PHASE/GAIN

-20
f

V

-40

-60

THD (dBc)

-80

-100
0 100K 200K 300K 400K 500K

SAMPLE

= 5V

OUT

≅ 450kHz

P-P

HA-5340

HOLD MODE

SAMPLE MODE

FREQUENCY (Hz)

HA-5320
SAMPLE AND
HOLD MODES

HA-5340

FIGURE 16. THD vs FREQUENCY FIGURE 17. THD vs V

7

-20

-40

-60

THD (dBc)

-80

-100

HA-5340

at 200kHz, f

P-P

HA-5320

HA-5340

SAMPLE MODE

≅ 450kHz

SAMPLE

SAMPLE AND HOLD MODES

HOLD MODE

510 20

V

OUT

OUT

Die Characteristics

HA-5340

DIE DIMENSIONS:

84mils x 139mils x 19mils

METALLIZATION:

Type: Al, 1% Cu
Thickness: 16k

Å ± 2kÅ

Metallization Mask Layout

SUPPLY (13)

GND

S/H (14)

CONTROL

HA-5340

PASSIVATION:

Type: Nitride (Si
Silox Thickness: 12k

) over Silox (SiO2, 5% Phos)

3N4

Å ± 2.0kÅ

Nitride Thickness: 3.5kÅ ± 1.5kÅ

SUBSTRATE POTENTIAL (Powered Up):

V-

TRANSISTOR COUNT:

196

HOLD CAP

(11) EXTERNAL

(9) +V

-IN (1)

+IN (2)

OFFSET ADJ (4)

OFFSET ADJ (3)

(5)

SUPPLY

-V

SUPPLY

(7) OUTPUT

(7) OUTPUT

(6) SIG GND

All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.

Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with­out notice. Accordingly , the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.

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8