Datasheet Texas Instruments OPA121

Manufacturer	Texas Instruments
Series	OPA121

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Parametrics

Parameters / Models	OPA121KM	OPA121KM3	OPA121KP	OPA121KP4	OPA121KU	OPA121KU/2K5	OPA121KUE4
Additional Features	Vos Adj Pin	Vos Adj Pin	Vos Adj Pin	Vos Adj Pin	N/A	N/A	N/A
Approx. Price (US$)	6.16 | 1ku	6.16 | 1ku	6.16 | 1ku	6.16 | 1ku
Architecture	FET	FET	FET	FET	FET	FET	FET
CMRR(Min), dB					82	82	82
CMRR(Min)(dB)	82	82	82	82
CMRR(Typ), dB					100	100	100
CMRR(Typ)(dB)	100	100	100	100
GBW(Typ), MHz					2	2	2
GBW(Typ)(MHz)	2	2	2	2
Input Bias Current(Max), pA					5	5	5
Input Bias Current(Max)(pA)	5	5	5	5
Iq per channel(Max), mA					4	4	4
Iq per channel(Max)(mA)	4	4	4	4
Iq per channel(Typ), mA					2.5	2.5	2.5
Iq per channel(Typ)(mA)	2.5	2.5	2.5	2.5
Number of Channels					1	1	1
Number of Channels(#)	1	1	1	1
Offset Drift(Typ), uV/C					3	3	3
Offset Drift(Typ)(uV/C)	3	3	3	3
Operating Temperature Range, C					0 to 70	0 to 70	0 to 70
Operating Temperature Range(C)	0 to 70	0 to 70	0 to 70	0 to 70
Output Current(Typ), mA					40	40	40
Output Current(Typ)(mA)	40	40	40	40
Package Group	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC
Package Size: mm2:W x L, PKG					8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SOIC: 29 mm2: 6 x 4.9(SOIC)
Package Size: mm2:W x L (PKG)	See datasheet (PDIP)	See datasheet (PDIP)	See datasheet (PDIP)	See datasheet (PDIP)
Rail-to-Rail	No	No	No	No	No	No	No
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Slew Rate(Typ), V/us					2	2	2
Slew Rate(Typ)(V/us)	2	2	2	2
Total Supply Voltage(Max), +5V=5, +/-5V=10					36	36	36
Total Supply Voltage(Max)(+5V=5, +/-5V=10)	36	36	36	36
Total Supply Voltage(Min), +5V=5, +/-5V=10					10	10	10
Total Supply Voltage(Min)(+5V=5, +/-5V=10)	10	10	10	10
Vn at 1kHz(Typ), nV/rtHz					8	8	8
Vn at 1kHz(Typ)(nV/rtHz)	8	8	8	8
Vos (Offset Voltage @ 25C)(Max), mV					2	2	2
Vos (Offset Voltage @ 25C)(Max)(mV)	2	2	2	2

Eco Plan

Application Notes

• Download
  Diode-Connected FET Protects Op Amps
  PDF, 49 Kb, File published: Oct 2, 2000
  Providing input-overload protection for sensitive measurement circuits proves difficult when you must not degrade the circuits? performance in the process. It?s an especially tricky problem when you?re measuring a material?s dielectric properties. In such an application, an ultra-low input bias current op amp serves as a current integrator to measure a dielectric?s response to a 100V step.
• Download
  Compensate Transimpedance Amplifiers Intuitively (Rev. A)
  PDF, 69 Kb, Revision: A, File published: Mar 30, 2005
  Transimpedance amplifiers are used to convert low-level photodiode currents to usable voltage signals. All too often, the amplifiers have to be empirically compensated to operate properly. The problem can be easily understood if one looks at all the elements involved.
• Download
  Tuning in Amplifiers
  PDF, 44 Kb, File published: Oct 2, 2000
  Have you ever had the experience of designing an analog gain block with an amplifier that is specified to be unity gain stable only to find that it is oscillating out of control in your circuit? Or have you ever replaced a stable voltage feedback amplifier with a current feedback amplifier to find that the current feedback amplifier immediately oscillates when placed in the amplifier socket? Oscil
• Download
  Single-Supply Operation of Operational Amplifiers
  PDF, 77 Kb, File published: Oct 2, 2000
  Operation of op amps from single supply voltages is useful when negative supply voltages are not available. Furthermore, certain applications using high voltage and high current op amps can derive important benefits from single supply operation.
• Download
  Op Amp Performance Analysis
  PDF, 76 Kb, File published: Oct 2, 2000
  This bulletin reflects the analysis power gained through knowledge of an op amp circuit's feedback factor. Feedback dictates the performance of an op amp both in function and in quality. The major specifications of the amplifier descibe an open-loop device awaiting feedback direction of the end circuit's function. Just how well the amplifier performs the function reflects through the feedback inte

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Manufacturer's Classification

• Semiconductors> Amplifiers> Operational Amplifiers (Op Amps)> Precision Op Amps