LMH6555_14 Datasheet, PDF (5/37 Pages) Texas Instruments – LMH6555 Low Distortion 1.2 GHz Differential Driver

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LMH6555
SNOSAJ1C – NOVEMBER 2006 – REVISED MARCH 2011
CONNECTION DIAGRAM
16
V_IN+
15
GND
1 GND
R_G1 R_F1
2 GND
3 GND
4 GND
+
-
R_F2
R_G2
14
GND
13
V_OUT-
R_T2
R_T1
V_CC 12
V_CC 11
V_{CM_REF 10}
V_CC 9
V_IN-
GND
GND V_OUT+
5
6
7
8
Figure 2. 16-Pin WQFN
DEFINITION OF TERMS AND SPECIFICATIONS (ALPHABETICAL ORDER)
Unless otherwise specified, V_{CM_REF} = 1.2V
1.
A_{V_CM} (dB)
Change in the differential output voltage (ΔV_OUT ) with respect to the change in input common
mode voltage (ΔV_{I_CM})
2.
A_{V_DIFF} (dB)
Insertion gain from a single ended 50Ω (or 100Ω differential) source to the differential output
(ΔV_OUT)
3.
ΔA_{V_DIFF} (dB)
Variation in insertion gain (A_{V_DIFF})
4.
BAL_ERR_DC & BAL_ERR_AC
Balance
Error.
See
§
¨
'V_{O_CM}
¨© _'VOUT
5.
CM
6.
CMRR (dB)
7.
CMVR (V)
8.
Gain_V_{CM_REF} (V/V)
9.
PSRR (dB)
10. PSRR_CM (dB)
11.
R_IN (Ω)
12.
R_{IN_DIFF} (Ω)
13. R_L (Ω)
14. R_O (Ω)
15.
R_S1, R_S2 (Ω)
16.
R_T1, R_T2 (Ω)
17.
V_{CM_REF} (V)
18.
ΔV_{CM_REF} (V)
19.
V_{I_CM} (V)
20.
ΔV_{I_CM} (V)
Common Mode
Common Mode rejection defined as: A_{V_DIFF} (dB) - A_{V_CM} (dB)
Range of input common mode voltage (V_{I_CM})
Variation in output common mode voltage (ΔV_{O_CM}) with respect to change in V_{CM_REF} input
(ΔV_{CM_REF}) with maximum differential output
Differential output change (ΔV_OUT) with respect to the power supply voltage change (ΔV_S) with
nominal differential output
Output common mode voltage change (ΔV_{O_CM}) with respect to the change in the power supply
voltage (ΔV_S)
Single ended input impedance to ground
Differential input impedance
Differential output load
Device output impedance equivalent to R_T1 & R_T2
Source impedance to V_IN+ and V_IN^− respectively
Output impedance looking into each output
Device input pin which controls output common mode
Change in the V_{CM_REF} input
DC average of the inputs (V_IN+, V_IN^−) or the common mode signal at those same input pins
Variation in input common mode voltage (V_{I_CM})
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