OPA698 datasheet(6/32 Pages) TI1

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OPA698

SBOS258D

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OUTPUT VOLTAGE LIMITERS (Cont.)

Limited Step Response

2x Overdrive

Overshoot

VIN = VCM to VCM ± 1.2V Step

typ

Recovery Time

VIN = VCM ± 1.2V to VCM Step

typ

Linearity Guardband(9)

f = 5MHz, VO = 2VPP

typ

THERMAL CHARACTERISTICS

Temperature Range

Specification: I

–40 to +85

°C

typ

Thermal Resistance

Junction-to-Ambient

DSO-8

125

———

°C/W

typ

NOTES: (1) Junction temperature = ambient for +25

°C specifications.

(2) Junction temperature = ambient at low temperature limit; junction temperature = ambient +23

°C at high temperature limit for over temperature

specifications.

(3) Test levels: (A) 100% tested at +25

°C. Over temperature limits by characterization and simulation. (B) Limits set by characterization and simulation.

(4) Current is considered positive out of node.

(5) CMIR tested as < 3dB degradation from minimum CMRR at specified limits.

(6) IVH (VH bias current) is negative, and IVL (VL bias current) is positive, under these conditions. See Note 3, Figures 2, and Figure 8.

(7) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to VH (or VL) when VIN = 0.

(8) VH slew rate conditions are: VIN = VCM + 0.4V, G = +2, VL = VCM – 1.2V, VH = step between VCM + 1.2V and VCM. VL slew rate conditions are similar.

(9) Linearity Guardband is defined for an output sinusoid (f = 5MHz, VO = VCM ± 1VPP) centered between the limiter levels (VH and VL). It is the difference between

the limiter level and the peak output voltage where SFDR decreases by 3dB (see Figure 9).

ELECTRICAL CHARACTERISTICS: VS = +5V (Cont.)

Boldface limits are tested at +25

°C.

G = +2, RL = 500Ω tied to VCM = 2.5V, RF = 402Ω, VL = VCM –1.2V, and VH = VCM +1.2V (see Figure 2 for AC performance only), unless otherwise noted.

OPA698ID

TYP

MIN/MAX OVER TEMPERATURE

°C to

–40

°C to

MIN/

TEST

PARAMETER

CONDITIONS

+25

°C

+25

°C(1) +70°C(2) +85°C(2)

UNITS

MAX LEVEL(3)

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