Overview of DCV standard market

Entry-level units

Module name Type Based solution Output voltage Accuracy, ppm Tempco, ppm/K Cost,USD Notes Reviews Photo
AD584KH Taobao Zener IC AD584KH 2.5, 5.0, 7.5, 10.0 VDC +/-500ppm +/- 30 15$ External power, low cost 1
Voltagestandards.com .003% 10V Buried zener LT1021BCN8-10 10VDC 30ppm 4 typical Product page
Voltagestandards.com .002% Buried zener VRE305A 5VDC 25ppm 0.83 typical Product page
Voltagestandards.com .01% Buried zener REF5050 5VDC 100ppm 5 typical Product page
Voltagestandards.com Pentaref Buried zener LT1021BCN8-5 1.0, 1.9, 2.5, 5.0, 10V 0.2 to 0.01% ? Pentaref
Voltagestandards.com DMMCheck Buried zener LT1021BCN8-5 5VDC, 1mADC, Res(1KΩ, 10KΩ, 100K&Omega); 70ppm, 0.1%, 10ppm DMMCheck
Voltagestandards.com DMMCheck Plus Buried zener LT1021BCN8-5 5VDC, 1mADC, 5Vrms, 1mArms, 100Hz, 50% Duty, Res(100 Ω, 1KΩ, 10KΩ, 100KΩ) DMMCheck Plus
Geller SVR Buried zener AD587LN 10VDC 10 5 $40, EOL Gellerlabs
Geller SVR-T Buried zener AD587LN 10VDC 10 5 $75, EOL Gellerlabs
AD588BQ ebay +/-15V Zener AD588 5VDC,10VDC 1mV ? 15$

Entusiast level units / salvaged reference modules

Module name Type Based solution Output voltage Accuracy, ppm Tempco, ppm/K Cost,USD Notes Reviews Photo
HP 3458A A9 board (STD) Super-zener Linear LTZ1000A 7.2 direct VDC 2% +/- 8 100-700$ Available from Keysight
HP 3458A A9 board (002) Super-zener Linear LTZ1000A 7.2 direct VDC 2% +/- 4 985 Available from Keysight
HP 3458A A9 board (HFL) Super-zener Linear LTZ1000A 7.2 direct VDC 2% +/- 2 2195 Orderable from Keysight TBD
xDevs.com KX Super-zener Linear LTZ1000A and non-A 7.2 direct VDC 2% ? 300 Article
xDevs.com KX LC Ovenized zener 2 x Linear LM399 7VDC / 10-20VDC 2% ? 100 Article

Commercial DCV standards

Module name Type Based solution Output voltage Accuracy, ppm Tempco, ppm/K Cost,USD Notes Reviews
Fluke 731B Ref-amp SZA263 10 VDC 30(15 for new) +/- 1 EOL 1983
Fluke 732A Ref-amp SZA263 10 VDC 6 (3 for new) +/- 0.05 EOL 1990
Fluke 732B Ref-amp Linear LTFLU-1 10 VDC 2 +/- 0.04 Available from Fluke
Fluke 7001M Super-zener Linear LTZ1000 10 VDC 1.8 +/- 0.03 Available from Fluke?
Fluke 7004N Super-zener Linear LTZ1000 10 VDC 1.2 +/- 0.02 EOL 2010
Fluke 7010N Super-zener Linear LTZ1000 10 VDC 1.0 +/- 0.01 EOL 2010
Transmille 3000ZR ? ? 10 VDC 2.0 ? ?
Guildline 4400 Zener 8 x LM329 10 VDC 2.0 +/- 0.04 EOL 1995
Datron 4910 Super-zener 4 x Linear LTZ1000 10 VDC, 1VDC, 1.018VDC 1.5 +/- 0.05 EOL 2000
Datron 4910AV Super-zener 4 x Linear LTZ1000 10 VDC, 1VDC, 1.018VDC 1.0 +/- 0.05 EOL 2000
Datron 4911 Super-zener 4 x Linear LTZ1000 10 VDC ? +/- 0.05 EOL 2000
Datron 4912 Super-zener Linear LTZ1000 10 VDC, 1VDC ? +/- 0.05 EOL 2000
Valhalla 2734A Zener 8 × 1N827 Variable 3.0 +/- 0.05 EOL
РИТМ К6-10МН Zener ? 10 VDC 1.0 ?
РИТМ Н4-9 Zener ? 10 VDC 4.0 +/- 0.25
РИТМ Н4-12МН Zener ? 10 VDC 4.0 +/- 0.20
ВНИИФТРИ МН-1 Zener 4 × 6.4V 10 VDC 9 (6) ?
ВНИИФТРИ МН-2 Zener 2 × 6.4V 10 VDC 6 (6) ?
ВНИИФТРИ МН-3 Zener 1 × 6.4V 10 VDC 3 ?
МНИМИ Н4-100 Super-zener Linear LTZ1000 10 VDC 4 +/- 0.10

Voltage reference ICs

Unheated voltage references

Part number Vendor Vout VINmin VINmax NIQ TEMPCO TEMPCO eN LOWBW LT DRIFT DV MAX] DI MAX Hermetic? Abs.Acc Package Type Full P/N Reference COST
LT1031 Linear 10 11 40 1.2 1.7 10 5 0.6 15 4 25 Y 0.05 3pin TO-39 Z LT1031BCH Linear $9.00
LT1236-5 Linear 5 6 40 0.8 1.2 10 5 2 0.6 20 6 / 12 20 Y 0.05 LS-8 Z LT1236AILS8-5 Linear $7.23
LT1021C-5 Linear 5 7.2 40 0.8 1.2 10 20 3 0.6 15 2 / 6 20 Y 0.05 8pin TO-5 Z LT1021CCH-5 Linear $6.25
LT1027 Linear 5 8 40 2.2 3.1 15 3 2 0.6 (20) 6 / 12 -3 / 6 N 0.05 8-DIP Z LT1027CCN $8.42
LTC6655 Linear 4.096 4.6 13 5 7 5 2 1 60 (20) 5 / 25 N (Y) 0.025 MS8 (LS8) Linear
LT4161A Linear 4.096 4.6 20 0.035 0.05 50 3 3 8 60 2 / 8 12 / 30 N 0.04 8-SOIC BG LT4161ACS8-4#PBF $10.80
REF5050 TI 5 5.2 18 1 6.5 4 3 1 30 N 0.05 8-SOIC BG REF5050MDREP $12.26
REF5040 TI 4.096 4.3 18 1 5 3 3 1 30 N 0.05 8-SOIC BG REF5040MDREP $12.26
LM4140 TI 4.096 4.3 5.5 .27 .35 8 3 3 0.5 60 20 / 200 5 / 35 N 0.1 BG
VRE4141 Apex 4.096 4.3 5.5 .23 .32 8 0.5 1 2.2 50 20 / 200 1 / 20 N 0.05 8-SOIC n/a
VRE305 Apex 5 13.5 22 5 7 10 0.6 0.6 6 10 Y 0.01 8-DIP Z VRE305AD $93.33
AD586L AD 5 10.8 36 2 3 10 5 0.8 15 20 20 Y 0.05 8-CDIP Z AD586LQ Arrow $11.17
AD587K AD 10 13.5 36 2 4 <30 10 0.4 15 10 10 N 0.05 8-DIP Z AD587KNZ Newark $6.48
AD587U AD 10 13.5 36 2 4 <30 5 0.4 15 10 10 Y 0.05 8-CDIP Z AD587UQ $23.69
ADR4540B AD 4.096 4.2 15 0.7 0.95 10 2 0.66 25 1 / 10 25 / 80 N 0.02 8-SOIC U ADR4540BRZ $7.76
MAX6350 Maxim 5 8 36 2 3 15 1 0.5 0.6 (30) 30 1 / 6 N 0.025 8-DIP Z MAX6350CPA Arrow $12.77
MAX6341 Maxim 4.096 8 36 2 3 15 1 0.5 0.6 (30) 7 1 / 6 N 0.025 8-DIP Z MAX6341CPA+ $12.13
MAX6241 Maxim 4.096 8 36 2 3 15 2 1 0.6 (20) 10 / 18 1 / 6 N 0.025 8-DIP Z MAX6241ACPA+ $8.42
1N829A AF 6.2 7.5 5 Y DO-35 Z JAN 1N829 $4.00

Heated voltage references

Part number Vendor Vout VINmin VINmax NIQ Iout TEMPCO TEMPCO eN LOWBW LT DRIFT DV MAX DI MAX Hermetical? Abs.accuracy % Package type Type COST
LTZ1000 LT 7.2 10 VDC 35 V * * 0.03 1.2 µV / 0.15ppm 2µV @ 65°C Y 2 8pin TO-5 Proprietary buried zener $42.85
LTZ1000A LT 7.2 10 VDC 35 V * * 0.03 1.2 µV / 0.15ppm 2µV @ 65°C Y 2 8pin TO-5 Proprietary buried zener $54.50
LM399A LT 6.95 1 0.3 8 Y 5 4pin TO-46 Proprietary buried zener $9.37
LM399 LT 6.95 1 0.3 8 Y 5 4pin TO-46 Proprietary buried zener $6.64
LM299 LT 6.95 1 0.3 8 Y 5 4pin TO-46 Proprietary buried zener Obsolete
LM199 LT 6.95 1 0.3 8 Y 5 4pin TO-46 Proprietary buried zener Obsolete

notes – practical examples

REF5050ID REF5-01
AD587LQ / LN SVR
LM399
VRE305
MAX6350

  • long-term drift specified for hermetic pkg options only. (values)

Die photograph collection

LTZ1000CH / ACH

LM199/299/399

Tesla MAC199/MAB299/MAB399

Author: Illya Tsemenko
Published: Oct. 1, 2015, 4:39 p.m.
Modified: July 8, 2016, 10:06 p.m.

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