18

Am79D2251

Notes:

1.

These tests are performed with the following load impedances:

Frequency < 12 kHz – Longitudinal impedance = 500

Ω; metallic impedance = 300 Ω

Frequency > 12 kHz – Longitudinal impedance = 90

Ω; metallic impedance = 135 Ω

2.

Not tested or partially tested in production. This parameter is guaranteed by characterization or

correlation to other tests.

3.

This parameter is tested at 1 kHz in production. Performance at other frequencies is guaranteed by

characterization.

4.

When the Intelligent Access voice chipset is in the anti-sat operating region, this parameter will be

degraded. The exact degradation will depend on system design.

5.

Guaranteed by design.

6.

Overall 1.014 kHz insertion loss error of the Intelligent Access voice chipset is guaranteed to be

≤

0.34 dB

7.

These SBAT, PSRR specifications are valid only when the ISLIC is used with the ISLAC, which

generates the anti-sat reference. Since the anti-sat reference depends upon the battery voltage sensed

by the VHB, VLB, and VPB pins of the ISLAC, the PSRR of the kit depends upon the amount of battery

filtering provided by CB.

8.

Must meet at least one of these specifications.

9.

These voltages are referred to VREF

10.

These limits refer to the 2-wire output of an ideal ISLIC but reflect only the capabilities the ISLAC.

11.

When relative levels (dBm0) are used, the specification holds for any setting of (AX + GX) gain from

0 to 12 dB or (AR + GR + RG) from 0 to –12 dB.

12.

Group delay spec valid only when Channels 1–2 occupy consecutive slots in the frame. Programming

channels in non-consecutive timeslots adds 1 frame delay in the Group delay measurements.

13.

The Group delay specification is defined as the sum of the minimum values of the group delays for

transmit and the receive paths when the B, X, R, and Z filters are disabled with null coefficients. See

Figure 15-3 for Group Delay Distortion.

14.

These limits reflect only the capabilities of the dual ISLAC device.

13

Crosstalk between channels

TX or RX to TX

TX or RX to RX

0 dBm0

1014 Hz

1014 Hz

–76

–78

dBm0

No.

Item

Condition

Min

Typ

Max

Unit

Note