link to page 15 AD8313Data SheetTYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VS = 5 V, RL input match shown in Figure 29, unless otherwise noted. 2.02.051.81.841.61.631.41.42100MHz1.21.2–40°C1(V)(V)1.01.9GHz2.5GHz1.00+25°COUTOUTVV0.80.8–1ERROR (dB)+85°C0.60.6–20.4900MHz0.4–3SLOPE AND INTERCEPT NORMALIZED AT +25°C0.20.2–4AND APPLIED TO –40°C AND +85°C00–5–70–60–50–40–30–20–10010–70–60–50–40–30–20–10010INPUT AMPLITUDE (dBm) 01085-C-004 INPUT AMPLITUDE (dBm) 01-85-C-007 Figure 4. VOUT vs. Input Amplitude Figure 7. VOUT and Log Conformance vs. Input Amplitude at 900 MHz for Multiple Temperatures 62.051.8441.63900MHz–40°C1.422100MHz1.21(V)+25°C0900MHz1.00OUTVERROR (dB)0.8+85°C–12.5GHzERROR (dB)–21.9GHz2.5GHz100MHz0.6–21.9GHz0.4–3–4SLOPE AND INTERCEPT NORMALIZED AT +25°C0.2–4AND APPLIED TO –40°C AND +85°C–60–5–70–60–50–40–30–20–10010–70–60–50–40–30–20–10010INPUT AMPLITUDE (dBm) 01085-C-005 INPUT AMPLITUDE (dBm) 01085-C-008 Figure 5. Log Conformance vs. Input Amplitude Figure 8. VOUT and Log Conformance vs. Input Amplitude at 1.9 GHz for Multiple Temperatures 2.052.051.841.841.631.63–40°C1.421.42–40°C1.211.21(V)+25°C(V)1.001.00OUTOUT+25°CV+85°CV0.8–1ERROR (dB)0.8–1ERROR (dB)SLOPE AND INTERCEPT0.6–20.6NORMALIZED AT +25°C AND–2APPLIED TO –40°C AND +85°C0.4–30.4–30.2SLOPE AND INTERCEPT NORMALIZED AT +25°C–40.2+85°C–4AND APPLIED TO –40°C AND +85°C0–50–5–70–60–50–40–30–20–10010–70–60–50–40–30–20–10010INPUT AMPLITUDE (dBm) 01085-C-006 INPUT AMPLITUDE (dBm) 01085-C-009 Figure 6. VOUT and Log Conformance vs. Input Amplitude at 100 MHz for Figure 9. VOUT and Log Conformance vs. Input Amplitude at 2.5 GHz for Multiple Temperatures Multiple Temperatures Rev. E | Page 8 of 24 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Description Typical Performance Characteristics Circuit Description Interfaces Power-Down Interface, PWDN Signal Inputs, INHI, INLO Logarithmic/Error Output, VOUT Setpoint Interface, VSET Applications Information Basic Connections for Log (RSSI) Mode Operating in Controller Mode Input Coupling Narrow-Band LC Matching Example at 100 MHz Adjusting the Log Slope Increasing Output Current Effect of Waveform Type on Intercept Evaluation Board Schematic and Layout General Operation Using the AD8009 Operational Amplifier Varying the Logarithmic Slope Operating in Controller Mode RF Burst Response Outline Dimensions Ordering Guide