HA3-5340-5_技术文档

HA-5340

Data Sheet

September 1998

File Number 2859.3

700ns, Low Distortion, Precision Sample

and Hold Ampliﬁer

Features

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

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

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

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.

(V = 200kHz, f = 450kHz, 5V

)

IN P-P

S

• Bandwidth Minimally Affected By External C

• Fully Differential Analog Inputs

• Built-In 135pF Hold Capacitor

H

• Pin Compatible with HA-5320

To achieve this level of performance, the benefits of an

integrating output stage have been combined with the

advantages of a buffered hold capacitor. To the user this

translates to a front-end stage that 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.

Applications

• High Bandwidth Precision Data Acquisition Systems

• Inertial Navigation and Guidance Systems

• Ultrasonics

• SONAR

• RADAR

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.

Pinouts

HA-5340

(PDIP)

TOP VIEW

-IN

+IN

1

2

3

4

5

6

7

14 S/H CONTROL

13 SUPPLY GND

12 NC

Ordering Information

TEMP.

PKG.

NO.

o

OFFSET ADJ.

V-

PART NUMBER RANGE ( C)

PACKAGE

14 Ld PDIP

16 Ld SOIC

EXTERNAL

11

HA3-5340-5

HA9P5340-5

0 to 75

E14.3

HOLD CAP.

10 NC

M16.3

SIG. GND

OUTPUT

9

8

V+

Functional Diagram

NC

C

HOLD EXTERNAL

(OPTIONAL)

HA-5340

(SOIC)

ADJUST OFFSET

TOP VIEW

3

4

11

7

-IN

+IN

1

2

3

4

5

6

7

8

16 S/H CONTROL

15 SUPPLY GND

14 NC

C

HOLD

120pF

1

2

C

OFFSET ADJ.

NC

COMP

-IN

15pF

7

OUT

13 NC

+IN

EXTERNAL

12

HOLD CAP.

14

S/H

CONTROL

V-

11 NC

10 NC

9

5

13

6

SIG. GND

OUTPUT

9

V+

V-

SUPPLY SIGNAL GND

GND

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

1

HA-5340

Absolute Maximum Ratings

Thermal Information

o

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

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

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

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

Thermal Resistance (Typical, Note 2)

PDIP Package . . . . . . . . . . . . . . . . . . .

SOIC Package . . . . . . . . . . . . . . . . . . .

θ

( C/W)

θ

( C/W)

JA

JC

90

95

N/A

o

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

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

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

o

Operating Conditions

(SOIC - Lead Tips Only)

Temperature Range

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

o

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:

o

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

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

JA

Electrical Specifications V

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

IL IH

SUPPLY

H

Gain Configuration (Output tied to -Input), R = 2kΩ, C = 60pF, Unless Otherwise Specified

L

HA-5340-5

TYP

o

PARAMETER

INPUT CHARACTERISTICS

Input Voltage Range

TEST CONDITIONS

TEMP. ( C)

MIN

MAX

UNITS

Full

25

-10

-

+10

V

Input Resistance (Note 3)

Input Capacitance

-

1

-

3

MΩ

pF

25

-

Input Offset Voltage

25

-

1.5

3.0

30

-

mV

Full

25

-

o

Offset Voltage Temperature Coefficient

Bias Current

-

µV/ C

-

±70

nA

V

Full

25

-

±50

-

±350

-

Offset Current

-

Full

25

-

±350

+10

-

Common Mode Range

CMRR

-10

-

±10V, Note 4

83

-

dB

Full

72

-

TRANSFER CHARACTERISTICS

Gain

DC

25

110

140

10

-

dB

Gain Bandwidth Product

C

External = 0pF

Full

-

MHz

H

External = 100pF

External = 1000pF

9.6

6.7

TRANSIENT RESPONSE

Rise Time

200mV Step

10V Step

25

-

20

35

60

30

50

-

ns

%

Overshoot

Slew Rate

40

V/µs

DIGITAL INPUT CHARACTERISTICS

Input Voltage

V

Full

2.0

-

V

IH

IL

IH

-

0.8

40

Input Current

= 0V

= 5V

7

4

µA

2

HA-5340

Electrical Specifications V

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

SUPPLY

H

IL

IH

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

L

HA-5340-5

TYP

o

PARAMETER

OUTPUT CHARACTERISTICS

Output Voltage

TEST CONDITIONS

TEMP. ( C)

MIN

MAX

UNITS

Full

25

-10

-

+10

-

V

mA

MHz

Ω

Output Current

-10

-

Full Power Bandwidth (Note 5)

Output Resistance

0.6

0.9

0.05

0.07

325

Hold Mode

-

0.1

0.15

400

Full

25

Ω

Total Output Noise

DC to 10MHz

Sample Mode

Hold Mode

µV

RMS

25

RMS

DISTORTION CHARACTERISTICS

SAMPLE MODE

Signal to Noise Ratio (RMS Signal to RMS Noise)

V

= 200kHz, 20V

Full

-

115

-100

-82

-

dB

IN

P-P

Total Harmonic Distortion

= 200kHz, 5V

P-P

-90

-76

-70

-66

-78

dBc

= 200kHz, 10V

= 200kHz, 20V

P-P

-74

= 500kHz, 5V

P-P

-75

Intermodulation Distortion

= 10V , f = 20kHz,

P-P

-83

1

f

= 21kHz

2

HOLD MODE (50% Duty Cycle S/H)

Signal to Noise Ratio

V

= 200kHz, 5V

P-P

25

-

76

-

dB

IN

(RMS Signal to RMS Noise) f = 450kHz

S

= 200kHz, 10V

P-P

Total Harmonic Distortion

f

= 450kHz

V

= 200kHz, 5V

P-P

25

-

-72

-66

-56

-84

-71

-61

-95

-91

-82

-

dBc

S

IN

= 200kHz, 10V

= 200kHz, 20V

P-P

= 100kHz, 5V

P-P

= 100kHz, 10V

= 100kHz, 20V

P-P

= 2f (Nyquist)

IN

= 20kHz, 5V

= 50kHz, 5V

P-P

= 100kHz, 5V

P-P

Intermodulation Distortion

= 450kHz

f

V

= 10V

P-P

25

-

-79

-

dBc

S

IN

(f = 20kHz, f = 21kHz)

1

2

SAMPLE AND HOLD CHARACTERISTICS

Acquisition Time

10V Step to 0.01%

25

Full

25

-

700

-

ns

900

10V Step to 0.1%

430

0.1

-

600

ns

Droop Rate

C

= Internal

25

-

µV/µs

mV

ns

H

Full

25

95

Hold Step Error

V

= 0V, V = 4.0V, t = 5ns

IH

15

-

IL

R

Hold Mode Settling Time

Hold Mode Feedthrough

EADT (Effective Aperture Delay Time)

Aperture Uncertainty

To ±1mV

20V , 200kHz, Sine

Full

25

200

-76

-15

0.2

300

-

dB

P-P

ns

25

ns

3

HA-5340

Electrical Specifications V

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

SUPPLY

H

IL

IH

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

L

HA-5340-5

TYP

o

PARAMETER

POWER SUPPLY CHARACTERISTICS

Positive Supply Current

Negative Supply Current

PSRR

TEST CONDITIONS

TEMP. ( C)

MIN

MAX

UNITS

Full

-

19

82

25

-

mA

dB

10% Delta

75

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

(V

= 10V).

PEAK PEAK

Test Circuits and Waveforms

1

7

-INPUT

V

OUTPUT

O

2

+INPUT

S/H

CONTROL

INPUT

14

11

S/H CONTROL

NC

HA-5340

(C = 135pF = INTERNAL)

H

FIGURE 1. HOLD STEP ERROR AND DROOP RATE

HOLD (+4.0V)

SAMPLE (0V)

S/H CONTROL

HOLD (+4.0V)

∆V

V

S/H CONTROL

O

SAMPLE (0V)

∆t

V

O

NOTES:

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

O

V

P

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

O

NOTE:

6. Observe the “hold step” voltage V

9. Droop can be positive or negative - usually to one rail or the other

not to GND.

P.

FIGURE 2. HOLD STEP ERROR

FIGURE 3. DROOP RATE TEST

V+

V-

HA-5340

ANALOG

MUX OR

SWITCH

NOTE:

V

9

5

IN

10. Feedthrough in

V

1

2

-IN

V

OUT

20V

200kHz

SINE WAVE

OUT

P-P

7

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

dB = 20log

where:

+IN

OUT

V

IN

14

A

S/H

CONTROL

IN

SUPPLY

GND

REF

V

= V , Hold Mode,

P-P

OUT

= V

COM

V

IN

P-P

S/H CONTROL

INPUT

13

6

TO

SIGNAL

GND

SUPPLY

COMMON

FIGURE 4. HOLD MODE FEEDTHROUGH ATTENUATION

4

HA-5340

capacitor types offer good performance over the speciﬁed

operating temperature range.

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.

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.

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.

®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 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 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.

The hold capacitor C should have high insulation

H

resistance and low dielectric absorption, to minimize droop

errors. Teﬂon®, polystyrene and polypropylene dielectric

-

15V +15V

OFFSET

ADJUST

≈ ±15mV

C

H

50kΩ

3

4

5

9

11

HI-774

120pF

15pF

1

2

7

13

V

IN

INPUT

14

S/H CONTROL

DIGITAL

OUTPUT

H

CONVERT

HA-5340

S

13

6

5

9

R/C

ANALOG

COMMON

SYSTEM

POWER

GROUND

SYSTEM

SIGNAL

GROUND

NOTE: Pin Numbers Refer to

DIP Package Only.

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

5

HA-5340

o

Typical Performance Curves T = 25 C, V = ±15V, Unless Otherwise Speciﬁed

A

S

4V

S/H

CONTROL

S/H

CONTROL

4V

0V

10V

0pF

470pF

0V

1000pF

2200pF

V

OUT

V

OUT

FIGURE 6. T

POS 0 TO +10 STEP

FIGURE 7. T

vs ADDITIONAL C

ACQ

ACQ H

30

28

26

24

22

20

18

16

14

12

10

8

2300

2100

1900

1700

1500

1300

1100

900

o

125 C

o

6

4

2

100 C

o

75 C

700

0

1

10

100

1000

0

400

800

1200

1600

2000

2400

EXTERNAL HOLD CAPACITANCE (pF)

FIGURE 8. DROOP RATE vs HOLD CAPACITANCE

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

20

13

12

11

10

9

C

= INTERNAL

V

= 4V

H

IH

o

TEMPERATURE = 25 C

C

= 470pF

H

10

0

8

7

6

V

= 3V

IH

5

4

3

2

= 4V

IH

1

-10

0

-55 -35

-15

0

25

50

75

100

125

5

10

15

20

o

T

(ns)

TEMPERATURE ( C)

RISE

FIGURE 10. HOLD STEP ERROR vs T

FIGURE 11. HOLD STEP ERROR vs TEMPERATURE

RISE

6

HA-5340

o

Typical Performance Curves T = 25 C, V = ±15V, Unless Otherwise Speciﬁed (Continued)

A

S

20

10

0

14

12

10

8

V

= 4V, C = INTERNAL

H

IH

= 5ns, 10ns, 20ns

T

= 5ns

o

RISE

= 25 C

t

R

T

A

5ns

10ns

20ns

6

4

V

= 4V

IH

2

-10

-55 -35

-15

0

25

50

75

100

125

0

200

400

600

800

1000

o

EXTERNAL HOLD CAPACITANCE (pF)

TEMPERATURE ( C)

FIGURE 12. HOLD STEP ERROR vs HOLD CAPACITANCE

FIGURE 13. HOLD STEP ERROR vs TEMPERATURE

40

180

MAGNITUDE

180

40

20

90

0

20

0

MAGNITUDE

C

= 1000pF

H

90

0

C

= 470pF

H

PHASE

C

= 0pF

H

0

-90

PHASE

A

= +100, ±15V AND

V

-90

-180

C

= 1000pF

±12V SUPPLIES (NOTE)

H

C

= 470pF

H

1K

10K 100K

1M

10M

C

= 0pF

H

-180

A

= +100

V

NOTE: ±15V and ±12V supplies trace the same line within

the width of the line, therefore only one line is shown.

1K

10K

100K

1M

10M

FIGURE 14. CLOSED LOOP PHASE/GAIN

FIGURE 15. CLOSED LOOP PHASE/GAIN

-20

-40

-20

f

V

450kHz

SAMPLE

= 5V

HA-5320

OUT

P-P

SAMPLE AND

HOLD MODES

HA-5320

SAMPLE AND HOLD MODES

-40

-60

HA-5340

HOLD MODE

HA-5340

HOLD MODE

-80

HA-5340

SAMPLE MODE

HA-5340

SAMPLE MODE

-100

5

10

20

0

100K

200K

300K

400K

500K

V

at 200kHz, f

450kHz

OUT

SAMPLE

FREQUENCY (Hz)

P-P

FIGURE 16. THD vs FREQUENCY

FIGURE 17. THD vs V

OUT

7

HA-5340

Die Characteristics

DIE DIMENSIONS:

PASSIVATION:

Type: Nitride (Si N ) over Silox (SiO , 5% Phos)

84mils x 139mils x 19mils

3

4

2

Silox Thickness: 12kÅ ± 2.0kÅ

Nitride Thickness: 3.5kÅ ± 1.5kÅ

METALLIZATION:

Type: Al, 1% Cu

Thickness: 16kÅ ± 2kÅ

SUBSTRATE POTENTIAL (Powered Up):

V-

TRANSISTOR COUNT:

196

Metallization Mask Layout

HA-5340

SUPPLY (13)

GND

S/H (14)

CONTROL

(9) +V

SUPPLY

-IN (1)

(7) OUTPUT

+IN (2)

(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 with-

out 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.

For information regarding Intersil Corporation and its products, see web site http://www.intersil.com

8


型号：	HA3-5340-5
厂家：	Intersil
描述：	700ns, Low Distortion, Precision Sample and Hold Amplifier 700ns ，低失真，精密采样保持放大器放大器
文件：	总8页 (文件大小：402K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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