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VRE310BS

更新时间：2025-06-29 07:41:44

品牌：CIRRUS

描述：Precision Voltage Reference

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免费 PCB/SMT

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VRE310BS 概述

Precision Voltage Reference 精密电压基准

VRE310BS 数据手册

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P r o d u c t I n n o v a t i o n F r o m

VR_VE_R3_E1₃₁0₀

Precision Voltage Reference

FEaTuRES

DESCRIPTION

The VRE310 is a low cost, high precision +10 V refer-

ence. Available in an industry standard 8-pin DIP or

SMT, the device is ideal for upgrading systems that

use lower performance references.

♦ +10 V Output, ±1.0 mV (.01%)

♦ Temperature Drift: 0.6 ppm/ºC

♦ Low Noise: 6 μV_P-P(0.1-10Hz)

♦ Industry Standard Pinout: 8-pin DIP or Surface

Mount Package

The device provides ultrastable +10 V output with ±1.0

mV (.01%) initial accuracy and a temperature coefﬁ-

cient of 0.6 ppm/ºC. This improvement in accuracy is

made possible by a unique, patented multipoint laser

compensation technique. Signiﬁcant improvements

have been made in other performance parameters

as well, including initial accuracy, warm-up drift, line

regulation, and long-term stability, making the VRE310

series the most accurate reference available in a stan-

dard 8-pin DIP or SMT package.

♦ Excellent Line Regulation: 6 ppm/V Typical

♦ Output Trim Capability

aPPlICaTIONS

The VRE310 is recommended for use as a refer-

ence for 14, 16, or 18-bit D/A converters which re-

quire an external precision reference. The device

is also ideal for calibrating scale factor on high

resolution A/D converters. The VRE310 offers su-

perior performance over monolithic references.

For enhanced performance, the VRE310 has an exter-

nal trim option for users who want less than 0.01% ini-

tial error. For ultra low noise applications, an external

capacitor can be attached between the noise reduction

pin and the ground pin. A reference ground pin is pro-

vided to eliminate socket contact resistance errors.

Figꢁreꢀ1.ꢀBlOCKꢀDIaGRaM

SElECTIONꢀGuIDE

InitiꢃꢂꢀError Temp.ꢀCoeff. Temp.ꢀRꢃnge

Pꢃckꢃge

Options

Modeꢂ

(mV)

(ppm/ºC)

(ºC)

VRE310AS

VRE310AD

VRE310BS

VRE310BD

VRE310CS

VRE310CD

VRE310JS

VRE310JD

1.0

1.6

2.0

1.0

0.6

1.0

2.0

0.6

0ºC to +70ºC

-40ºC to +85ºC

SMT8 (GD)

DIP8 (KD)

SMT8 (GD)

DIP8 (KD)

SMT8 (GD)

DIP8 (KD)

SMT8 (GD)

DIP8 (KD)

8-pinꢀSꢁrfꢃceꢀMoꢁntꢀ

PꢃckꢃgeꢀStyꢂeꢀGD

8-pinꢀDIP

PꢃckꢃgeꢀStyꢂeꢀKD

MaRꢀ2009

1ꢀ

APEX − VRE310DSREVE

VRE310DSꢀ

ꢀ

http://www.cirrus.com

P r o d u c t I n n o v a t i o n F r o m

VRE310

1.ꢀChaRaCTERISTICSꢀaNDꢀSPECIFICaTIONS

ElECTRICalꢀSPECIFICaTIONS

V_PS=±15V, T = +25ºC, R_L= 10KΩ Unless Otherwise Noted.

Modeꢂ

a/J

Typ

Pꢃrꢃmeter

Min

Mꢃx

Min

Typ

Mꢃx

Min

Typ

Mꢃx

units

aBSOluTEꢀMaXIMuMꢀRaTINGS

Power Supply

±13.5

±15

±22

+70

Operating Temperature (A,B,C)

Operating Temperature (J)

Storage Temperature

Short Circuit Protection

OuTPuTꢀVOlTaGE

ºC

-40

-65

+85

+150

Continuous

VRE310

+10.0

630

Temp. Sensor Voltage (Note 1)

OuTPuTꢀVOlTaGEꢀERRORS

Initial Error

(Note 2)

(Note3)

(Note 4)

±1.0

0.6

±1.6

1.0

±2.0

2.0

ppm

Warmup Drift

T_MIN- T_MAX

ppm/ºC

ppm/1000hrs.

µVpp

Long-Term Stability

Noise (0.1 - 10Hz)

OuTPuTꢀCuRRENT

Range

±10

REGulaTION

Line

ppm/V

Load

ppm/mA

OuTPuTꢀaDJuSTMENT

Range

POWERꢀSuPPlYꢀCuRRENT (Note 5)

VRE310 +PS

NOTES:

Same as A/J Models.

1. The temp. reference TC is 2.1 mV/ ºC

2. The speciﬁed values are without external trim.

3. The temperature coefﬁcient is determined by the box method using the following formula:

V_MAX– V_MIN

T.C. =

x 10⁶

V_NOMINALx (T_MAX– T_MIN

)

4. The speciﬁed values are without the external noise reduction capacitor.

5. The speciﬁed values are unloaded.

2ꢀ

ꢀ

ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀVRE310DS

P r o d u c t I n n o v a t i o n F r o m

VRE310

2.ꢀTYPICalꢀPERFORMaNCEꢀCuRVES

V_OUTvs. TEMPERATURE

Temperature ^oC

VRE310A

Temperature ^oC

VRE310B

V_OUTvs. TEMPERATURE

Temperature ^oC

VRE310C

Temperature ^oC

VRE310J

JUNCTION TEMP. RISE VS. OUTPUT CURRENT

PSRR VS. FREQUENCY

QUIESCENT CURRENT VS. TEMP

Temperature ^oC

Output Current (mA)

Frequency (Hz)

VRE310DSꢀ

ꢀ

3ꢀ

P r o d u c t I n n o v a t i o n F r o m

VRE310

3.ꢀThEORYꢀOFꢀOPERaTION

The following discussion refers to the block diagram in Figure 1. In operation, approximately 6.3 V is applied to

the noninverting input of the op amp. The voltage is ampliﬁed by the op amp to produce a 10 V output. The gain is

determined by the networks R1 and R2: G=1 + R2/R1. The 6.3 V zener diode is used because it is the most stable

diode over time and temperature.

The zener operating current is derived from the regulated output voltage through R3. This feedback arrangement

provides a closely regulated zener current. This current determines the slope of the references’ voltage vs. tempera-

ture function. By trimming the zener current a lower drift over temperature can be achieved. But since the voltage

vs. temperature function is nonlinear this compensation technique is not well suited for wide temperature ranges.

A nonlinear compensation network of thermistors and resistors is used in the VRE series voltage references. This

proprietary network eliminates most of the nonlinearity in the voltage vs. temperature function. By then adjusting the

slope, a very stable voltage is produced over wide temperature ranges.

This network is less than 2% of the overall network resistance so it has a negligible effect on long term stability.

By using highly stable resistors in our network, we produce a voltage reference that also has very good long term

stability.

The proper connection of the VRE310 series voltage references with the optional trim resistor is shown below. The

VRE310 reference has the ground terminal brought out on two pins (pin 4 and pin 7) which are connected together

internally. This allows the user to achieve greater accuracy when using a socket. Voltage references have a volt-

age drop across their power supply ground pin due to quiescent current ﬂowing through the contact resistance. If

the contact resistance was constant with time and temperature, this voltage drop could be trimmed out. When the

reference is plugged into a socket, this source of error can be as high as 20 ppm. By connecting pin 4 to the power

supply ground and pin 7 to a high impedance ground point in the measurement circuit, the error due to the contact

resistance can be eliminated. If the unit is soldered into place, the contact resistance is sufﬁciently small that it does

not effect performance. Pay careful attention to the circuit layout to avoid noise pickup and voltage drops in the

lines.

EXTERNalꢀCONNECTIONS

+ V_IN

V TEMP OUT

OPTIONAL

NOISE REDUCTION

CAPACITOR

C_N

+ V_OUT

VRE310

10kΩ

1µF

OPTIONAL

FINE TRIM

ADJUSTMENT

REF. GND

PINꢀCONFIGuRaTION

NOISE

REDUCTION

N/C

+V_IN

VRE310

REF. GND

TOP

VIEW

TEMP

V_OUT

GND

TRIM

ꢄꢀ

ꢀ

ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀVRE310DS

P r o d u c t I n n o v a t i o n F r o m

VRE310

CONTaCTINGꢀCIRRuSꢀlOGICꢀSuPPORT

For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America.

For inquiries via email, please contact tucson.support@cirrus.com.

International customers can also request support by contacting their local Cirrus Logic Sales Representative.

To ﬁnd the one nearest to you, go to www.cirrus.com

IMPORTANT NOTICE

Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject

to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant

information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale

supplied at the time of order acknowledgment, including those pertaining to warranty, indemniﬁcation, and limitation of liability. No responsibility is assumed by Cirrus

for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third

parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,

copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives con-

sent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent

does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-

ERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE

SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PROD-

UCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUS-

TOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE

CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES,

BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL

LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc.

All other brand and product names in this document may be trademarks or service marks of their respective owners.

VRE310DSꢀ

ꢀ

ꢅꢀ

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