Datasheet ADR821, ADR827 (Analog Devices)

Low Power, Precision Reference and Op Amp ADR821/ADR827 FEATURES FUNCTIONAL BLOCK DIAGRAM 10-lead MSOP ADR821/ADR827 400 μA supply current V+ 1 10 AMP_OUT R −40°C to +125°C temperature range 1 R2 R1 2 9 R2 On-board precision resistors GND 3 8 –IN Reference ADR821: 2.8 V to 15 V operation NC 4 7 +IN REF ADR827: 2.7 V to 15 V operation V– 5 6 REF_OUT
1
±0.2% initial accuracy
00 5- 66
15 ppm/°C temperature drift maximum NC = NO CONNECT
06
+5 mA/−3 mA output drive
Figure 1.
Amplifier ADR821 ±2.8 V to ±15 V operation Table 1. Selection Table 2.8 V to 15 V single-supply operation Reference ADR827 Reference Reference Temperature ±2.7 V to ±15 V operation Part No. VOUT Accuracy Coefficient 2.7 V to 15 V single-supply operation
ADR827ARMZ 1.25 V ±0.4% 30 ppm/°C
Rail-to-rail input and output
ADR827BRMZ 1.25 V ±0.2% 15 ppm/°C
500 μV offset voltage maximum
ADR821ARMZ 2.50 V ±0.4% 30 ppm/°C
50 nA bias current maximum
ADR821BRMZ 2.50 V ±0.2% 15 ppm/°C
Unity gain stable No phase reversal APPLICATIONS Battery-powered instrumentation Portable medical instrumentation Data acquisition systems Industrial process controls Automotive applications GENERAL DESCRIPTION
The ADR821/ADR827 combines a precision voltage reference Available with the reference at 1.25 V and at 2.5 V, the and an op amp in a 10-lead mini small outline package (MSOP). ADR821/ADR827 also come in two grades. The reference on The reference and the op amp can be operated independently, the A grade offers 30 ppm/°C temperature drift performance offering the user a range of flexibility when arranging the and ±0.4% initial accuracy. The B grade provides a tighter combination. Featuring a combined operating current of less temperature drift performance of 15 ppm/°C and only ±0.2% than 400 μA and 15 ppm/°C temperature drift on the reference, initial accuracy. All versions operate from −40°C to +125°C. the ADR821/ADR827 are ideally suited for applications requir- ing precision and low power.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ADR821 ELECTRICAL CHARACTERISTICS—REFERENCE ADR821 ELECTRICAL CHARACTERISTICS—AMPLIFIER (VS = ±2.8 V) ADR821 ELECTRICAL CHARACTERISTICS—AMPLIFIER (VS = ±15 V) ADR827 ELECTRICAL CHARACTERISTICS—REFERENCE ADR827 ELECTRICAL CHARACTERISTICS—AMPLIFIER (VS = ±2.7 V) ADR827 ELECTRICAL CHARACTERISTICS—AMPLIFIER (VS = ±15 V) ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS REFERENCE AMPLIFIER APPLICATIONS INFORMATION +2.5 V AND −2.5 V OUTPUTS (ADR821) 2.5 V AND 5.0 V OUTPUTS (ADR821) MULTIPLE 2.5 V OUTPUTS (ADR821) OUTLINE DIMENSIONS ORDERING GUIDE