OPA699

6

SBOS261D

www.ti.com

OUTPUT VOLTAGE LIMITERS

Maximum Limited Voltage

+3.9

V

typ

C

Minimum Limited Voltage

+1.1

V

typ

C

Default Limiter Voltage

Limiter Pins Open

VCM ±1.1

VCM ±0.9

VCM ±0.8

VCM ±0.7

V

min

B

Minimum Limiter Separation (VH – VL)

400

400

400

400

mV

min

B

Maximum Limit Voltage

—

VCM ±1.8

VCM ±1.8

VCM ±1.8

V

max

B

Limiter Input Bias Current Magnitude(6)

VO = 2.5V

–15

µA

typ

C

Limiter Input Impedance

3.4 || 1

M

Ω || pF

typ

C

Limiter Isolation(7)

f = 5MHz

–60

dB

typ

C

DC Performance in Limit Mode

VIN = VCM ±0.4V

Limiter Voltage Accuracy

(VO – VH) or (VO – VL)

±15

±30

±35

±40

mV

max

A

Op Amp Bias Current Shift(4)

Linear

↔ Limited Operation

5

µA

typ

C

AC Performance in Limit Mode

Limiter Small-Signal Bandwidth

VIN = ±0.4V, VO < 0.02VPP

450

MHz

typ

C

Limiter Slew Rate(8)

100

V/

µs

typ

C

Limited Step Response

Overshoot

VIN = VCM to VCM ±0.4V Step

55

mV

typ

C

Recovery Time

VIN = VCM ±0.4V to VCM Step

3

ns

typ

C

Linearity Guardband(9)

f = 5MHz, VO = 2VPP

30

mV

typ

C

THERMAL CHARACTERISTICS

Temperature Range

Specification, I

–40 to +85

°C

typ

C

Thermal Resistance

Junction-to-Ambient

D

SO-8

125

°C/W

typ

C

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

°C Test Level A specifications. Junction temperature = ambient

temperature +23

°C at high temperature limit Test Level A specifications.

(2) Junction temperature = ambient at low temperature limit; junction temperature = ambient +1

°C at high temperature limit for over-temperature

tested specifications.

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

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

simulation. (C) Typical value for information only.

(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 and Figures 2 and 12.

(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 = +6, 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 8).

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

Boldface limits are tested at +25

°C.

G = +6, RF = 750Ω, RL = 500Ω tied to VCM = +2.5V, VL = VCM –1.2V, and VH = VCM +1.2V, (see Figure 2 for AC performance only), unless otherwise noted.

OPA699ID

0

°C to

–40

°C to

MIN/

TEST

PARAMETER

CONDITIONS

+25

°C

+25

°C(1)

70

°C(2)

+85

°C(2)

UNITS

MAX LEVEL(3)

TYP

MIN/MAX OVER TEMPERATURE