Name: VCA810ID
SKU: VCA810ID

VCA810

+5V

-5V

OUT

0 2V® -

- ®40dB +40dB Gain

VCA810

V+

V-

Gain

Adjust

VCA810

www.ti.com

SBOS275F –JUNE 2003–REVISED DECEMBER 2010

High Gain Adjust Range, Wideband,

VARIABLE GAIN AMPLIFIER

Check for Samples: VCA810

Operating from ±5V supplies, the gain control voltage

FEATURES

for the VCA810 will adjust the gain from –40dB at 0V

• HIGH GAIN ADJUST RANGE: ±40dB

input to +40dB at –2V input. Increasing the control

• DIFFERENTIAL IN/SINGLE-ENDED OUT

voltage above ground will attenuate the signal path to

greater than 80dB. Signal bandwidth and slew rate

• LOW INPUT NOISE VOLTAGE: 2.4nV/√Hz

remain constant over the entire gain adjust range.

• CONSTANT BANDWIDTH vs GAIN: 35MHz

This 40dB/V gain control is accurate within ±1.5dB

• HIGH dB/V GAIN LINEARITY: ±0.3dB

(±0.9dB for high grade), allowing the gain control

• GAIN CONTROL BANDWIDTH: 25MHz

voltage in an AGC application to be used as a

Received Signal Strength Indicator (RSSI) with

• LOW OUTPUT DC ERROR: < ±40mV

±1.5dB accuracy.

• HIGH OUTPUT CURRENT: ±60mA

Excellent common-mode rejection and

• LOW SUPPLY CURRENT: 24.8mA

common-mode input range at the two

(max for −40°C to +85°C temperature range)

high-impedance inputs allow the VCA810 to provide a

differential receiver operation with gain adjust. The

APPLICATIONS

output signal is referenced to ground. Zero differential

• OPTICAL RECEIVER TIME GAIN CONTROL

input voltage gives a 0V output with a small dc offset

error. Low input noise voltage ensures good output

• SONAR SYSTEMS

SNR at the highest gain settings.

• VOLTAGE-TUNABLE ACTIVE FILTERS

• LOG AMPLIFIERS

In applications where pulse edge information is

critical, and the VCA810 is being used to equalize

• PULSE AMPLITUDE COMPENSATION

varying channel loss, minimal change in group delay

• AGC RECEIVERS WITH RSSI

over gain setting will retain excellent pulse edge

• IMPROVED REPLACEMENT FOR VCA610

information.

An improved output stage provides adequate output

current to drive the most demanding loads. While

principally intended to drive analog-to-digital

converters (ADCs) or second-stage amplifiers, the

±60mA output current will easily drive

doubly-terminated 50Ω lines or a passive post-filter

stage over the ±1.7V output voltage range.

VCA810 RELATED PRODUCTS

GAIN

ADJUST INPUT SIGNAL

RANGE NOISE BANDWIDTH

SINGLES DUALS (dB) (nV/√Hz) (MHz)

VCA811 — 80 2.4 80

— VCA2612 45 1.25 80

— VCA2613 45 1 80

— VCA2614 45 3.6 40

DESCRIPTION

— VCA2616 45 3.3 40

The VCA810 is a dc-coupled, wideband, continuously

VCA2618 45 5.5 30

variable, voltage-controlled gain amplifier. It provides

a differential input to single-ended output conversion

with a high-impedance gain control input used to vary

the gain over a –40dB to +40dB range linear in dB/V.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Gain

Control,

-V

-In

(1)

OUT

VCA810

GND

+In

(2)

VCA810

SBOS275F –JUNE 2003–REVISED DECEMBER 2010

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

(1)

SPECIFIED

PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY

VCA810ID Rails, 75

VCA810ID SO-8 D –40°C to +85°C VCA810

VCA810IDR Tape and Reel, 2500

VCA810AID Rails, 75

VCA810AID SO-8 D –40°C to +85°C VCA810A

(2)

VCA810AIDR Tape and Reel, 2500

(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the

device product folder at www.ti.com.

(2) The A indicating high grade appears opposite the pin 1 marking indicator.

ABSOLUTE MAXIMUM RATINGS

(1)

Over operating free-air temperature range, unless otherwise noted.

VCA810 UNIT

Power supply ±6.5 V

Internal power dissipation See Thermal Analysis section

Differential input voltage ±V

Input common-mode voltage range ±V

Storage temperature range, D package –65 to +125 °C

Junction temperature (T

) +150 °C

Human body model (HBM) 2000 V

ESD ratings Charge device model (CDM) 1500 V

Machine model 200 V

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may

degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond

those specified is not implied.

PIN CONFIGURATIONS

D PACKAGE

SO-8

(TOP VIEW)

(1) High grade version indicator.

(2) NC = Not connected.

Product Folder Link(s): VCA810

VCA810

www.ti.com

SBOS275F –JUNE 2003–REVISED DECEMBER 2010

ELECTRICAL CHARACTERISTICS: V

= ±5V

Boldface limits are tested at +25°C.

At R

= 500Ω, and V

= single-ended input on V+ with V− at ground,, unless otherwise noted.

VCA810

MIN/MAX OVER

TYP TEMPERATURE

0°C to –40°C to MIN/ TEST

PARAMETER CONDITIONS +25°C +25°C

(2)

+70°C

(3)

+85°C

(3)

UNITS MAX LEVEL

(1)

AC PERFORMANCE

Small-signal bandwidth (see Figure 29) −2V ≤ V

≤ 0V 35 30 29 29 MHz min B

Large-signal bandwidth V

= 2V

, −2 ≤ V

≤ −1 35 30 29 29 MHz min B

Frequency response peaking V

< 500mV

, −2V ≤ V

≤ 0V 0.1 0.5 0.5 0.5 dB min B

Slew rate V

= 3.5V Step, −2 ≤ V

≤ −1, 10% to 90% 350 300 300 295 V/ms min B

Settling time to 0.01% V

= 1V Step, −2 ≤ V

≤ −1 30 40 41 41 ns min B

Rise-and-fall time V

= 1V Step, −2 ≤ V

≤ −1 10 12 12.1 12.1 ns min B

Group delay G = 0dB, V

=−1V, f = 5MHz, V

= 500mV

6.2 ns typ C

Group delay variation V

< 500mV

, −2V ≤ V

≤ 0V, f = 5MHz 3.5 ns typ C

Harmonic distortion

Second harmonic V

= 1V

, f = 1MHz, V

= −1V, G = 0dB –71 –51 –50 –49 dBc min B

Third harmonic V

= 1V

, f = 1MHz, V

= −1V, G = 0dB −35 –34 –32 –29 dBc min B

Input voltage noise V

= −2V 2.4 2.8 3.4 3.5 nV/√Hz max B

Input current noise −2V ≤ V

≤ 0V 1.4 1.8 2.0 2.1 pA/√Hz max B

Fully attenuated feedthrough f ≤ 1MHz, V

> +200mV −80 −70 dB max B

Overdrive recovery V

= 2V to 0V, V

= −2V, G = 40dB 100 150 ns min B

DC PERFORMANCE Single-ended or differential input

Output offset voltage (both inputs

−2V ≤ V

≤ 0V ±4 ±22 ±30 ±32 mV max A

grounded)

(4)

Output offset voltage drift ±125 ±125 V/°C max B

Input offset voltage

(4)

Both inputs grounded ±0.1 ±0.25 ±0.30 ±0.35 mV max A

input offset voltage drift ±1 ±1.2 mV/°C max B

Input bias current −2V ≤ V

≤ 0V −6 –10 −12 −14 mA max A

Input bias current drift ±25 ±30 nA/°C max B

Input offset current −2V ≤ V

≤ 0V ±100 ±600 ±700 ±800 nA max A

Input offset current drift ±1.4 ±2.2 nA/°C max B

INPUT

Common-mode input range ±2.4 ±2.3 ±2.3 ±2.2 V min A

Common-mode rejection ratio V

= 0.5V, V

= −2V, Input-referred 95 85 83 80 dB min A

Input impedance V

= 0V, Single-ended 1|| 1 MΩ || pF typ C

= 0V, Differential > 10 || < 2 MΩ || pF typ C

Differential input range

(5)

= 0V, V

= 0V 3 V

typ C

OUTPUT

Voltage output swing V

= −2V, R

= 100Ω ±1.8 ±1.7 ±1.4 ±1.3 V min A

= −2V, R

= 100Ω ±1.7 ±1.6 ±1.3 ±1.2 V min A

Output current V

= 0V ±60 ±40 ±35 ±32 mA min A

Output short-circuit current V

= 0V ±120 mA typ C

Output impedance V

= 0V, f < 100kHz 0.2 Ω typ C

(1) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization

and simulation. (C) Typical value; only for information.

(2) Junction temperature = ambient for +25°C tested specifications.

(3) Junction temperature = ambient at low temperature limit; junction temperature = ambient +30°C at high temperature limit for over

temperature specifications.

(4) Total output offset is: (Output Offset Voltage ± Input Offset Voltage x Gain).

(5) Maximum input at minimum gain for < 1dB gain compression.

Product Folder Link(s): VCA810

Part #	VCA810ID
Description	SINGLE VOLTAGE CONTROL AMP -Rail/Tube
Category	IC
Availability	Out of Stock
Qty	0

VCA810ID

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